In the first part of this lesson, we analyzed the causes of noise in photography, its components, and what to do in order not to provoke their appearance. In this tutorial we will learn how to reduce noise in Photoshop, Capture One, Digital Photo Professional and Lightroom. All of these programs have a tool for reducing noise in photography, called in the jargon of photographers " noise reduction».

On the this stage you need to understand that:
• If during the shooting there are only two alternatives: to take a picture without noise (low sensitivity of the camera matrix) but not sharp, or with noise, but sharp, then I choose the second option. For you can’t get rid of blurriness, but you can still fight against noise.
• It is not always necessary to completely remove noise in a photo, often it is enough to reduce its level to an acceptable level.
• Luma and chromatic noise are removed differently.
• At 100% image scale on the monitor, we see noise several times larger in area than they will be on a print, in a printing publication or an online photo album.

In this tutorial, there are large photos that are automatically scaled if your screen size is smaller than necessary. When this happens, a 100% zoom button will appear in the top right corner of the photo. Only this scale will allow you to accurately assess the strength and size of the noise. To view those parts of the illustration that are hidden, drag the image with the mouse by its central part. To close the photo and return to the article, press the Esc key.

Initial conditions: all noise reduction is disabled in my camera, shooting is carried out in RAW format, the sensitivity is set to 3200 (I still allow this value in my shooting) and 6400 (we'll see if I can use this sensitivity in an emergency). For control, a frame was taken at a matrix sensitivity of 100 units. All shots were adjusted to +0.5 stops. This slightly increased the level of noise in the photographs, but exposure errors occur during shooting, so this correction is closer to the practical situation for the photographer. From the test shots were cut out ( photo 1): a) a fragment from the packaging of Shnyr's food (to control text sharpness and color distortion); b) a scale with fields of different lightness (control of the strength of noise in different keys); c) a fragment of the body of the mythical creature Gava (for greater beauty). On the photo 2 we see that with increasing sensitivity, noise spots grow in all target fields, which is quite natural and expected.

Photo 1: test photo.
Photo 2: increasing the sensitivity of the camera matrix leads to increased noise.
Photo 3: Luminance noise reduction reduces the sharpness of fine details in the image.

How to remove noise in Photoshop (Photoshop).

Oh, pranksters, didn’t shoot in RAW format or forgot to remove noise at the stage of converting a RAW file? Sometimes it happens. Open our photo in Photoshop, then in the menu: Filter> Noise> Reduce Noise… (Filter> Noise> Reduce Noise…). Here is our first tested noise reduction.

Luminous noise. It is the first two sliders (Strength and Preserve Details) that are responsible for reducing it. If we pull Strength (Strength) to the right edge, then we will see that the luminance noise is reduced, but the text becomes more blurry ( photo 3). The main evil of luminance noise: the fight against them leads to a decrease in the sharpness and detail of the photo. The attentive reader will notice that the slider Preserve Details (Save details), just, and is designed to ensure that the image does not lose quality. Move the second slider to the right, and you'll see the sharpness and detail return. But noises also return with it, it turns out "they changed the awl for soap." The settings I used for ISO 3200: Strength - 9, Preserve Details 6%. If your photo does not have small details, like text, texture, then Preserve Details can be reduced up to 0. For ISO 6400, these settings turned out to be rather weak, so I increased Strength to 10, and Details was reduced to 3%, somewhat to the detriment of text sharpness ( photo 5).

Chromatic (color) noise seems to be the lesser evil. By moving the Reduce Color Noise slider to the maximum value ( photo 4) text sharpness is not reduced, color noise almost disappears, but small objects lose color saturation (look at the red and blue box). Also note that a colored halo is formed around the red dies. Sometimes, such a change in the color of small details can be critical and impossible for a photograph. Therefore, we should try to apply noise reduction to a minimum degree: for ISO 3200 I applied the Reduce Color Noise value of 70%, and for ISO 6400 - 100%.

On the photo 5 and 6 you see the result of noise reduction in Photoshop. If for ISO 3200, after noise reduction, noise manifests itself at a tolerable level and there is still some reserve for their greater suppression, then for ISO 6400 they are already excessive for some shootings, and I would try my best to avoid using this sensor sensitivity.

Photo 4: Reducing color noise can result in reduced color detail and color halos.
Photo 5: reduced noise in Photoshop, ISO 3200.
Photo 6: the result of using Photoshop noise reduction for ISO 6400.

Conclusions: Reducing luminance noise is impossible without reducing the sharpness of the photo. The use of noise reduction makes it possible to use a sensitivity of 3200 units, but a sensitivity of 6400 may not be suitable for increased requirements for photo quality. If you take photos for the Internet or small print, then I can use a sensitivity of 6400 units. By reducing luminance noise in a photograph, we do not get rid of chromatic noise, and vice versa.

Chromatic noise reduction in photography can sometimes go unnoticed by the viewer. But if color accuracy in small details is important when shooting, then excessive use of noise reduction settings in Photoshop is unacceptable, for example, when subject photography or in food photography. The more “gentle” the noise reduction settings we use (not only in Photoshop, in general, any), the better our image after processing.

Digital Photo Professional

The second for this lesson I chose Canon Digital Photo Professional(hereinafter DPP). This is a very simple RAW file converter for Canon cameras, and it is with it that I introduce the students of the photography course for beginners to the possibilities of the RAW format. In order to get to the DPP noise reduction, you need to select the NR / Lens / AOL tab on the Tool Palette (tool palette). Of course, we are interested in the Noise reduction block (noise reduction), in which there are only two sliders: Luminance ... - to reduce luminance noise, and Chrominance ... - for chromatic ( photo 7). As in the case of Photoshop's noise reduction, I tried to use such settings in DPP to maintain a balance of quality for fine details and smooth surfaces. For ISO 3200, the following parameters were used: Luminance - 7, Chrominance - 12 ( photo 8). For ISO 6400 - 12 and 20 respectively ( photo 9). The result is very similar to the one obtained in Photoshop's noise reduction.

Setting noise reduction in DPP. I've noticed that with my camera's noise reduction turned off, DPP applies its own noise reduction to RAW files. Turning off photo noise reduction every time is not convenient, so you need to make sure that DPP does not use it by default. To do this, go to the DPP settings (Ctrl + K keys), go to the Tool palette tab (tool palette), turn on the Set as defaults switch, set all sliders to 0, click OK, and restart DPP ( photo 10).

Photo 7: Canon Digital Photo Professional noise reduction.
Photo 8: The result of using DPP noise reduction for ISO 3200.
Photo 9: the result of applying the same noise reduction for ISO 6400.
Photo 10: DPP noise reduction settings.

Capture One

To date, Capture One is my main RAW file converter. As in the case of DPP, its noise reduction ( photo 11) is not disabled, and applies to RAW files regardless of camera settings. Moreover, even when there is no need to reduce noise, for example, at low sensitivity. I did a little research on the noise reduction algorithm in Capture One, and it interested me so much that I decided to read the help of this RAW converter. Alas, none useful information according to the principles of noise reduction in Capture One, I did not find it. Therefore, the results of my conjectures, assumptions and research will be described below.

According to Capture One help, the noise reduction of this converter changes its settings after the file is analyzed. I confess that for several years of working in Capture One, I adjusted the settings for its noise reduction only a few times. Noise reduction works so gently, intelligently, unobtrusively and excellently in automatic mode that I simply forgot about its existence.

The first thing I checked was how my photo would improve when I removed the noise reduction settings for ISO 100. And nothing happened. That is, if there is no noise, then noise reduction does not work. Then I noticed that when increasing the sensitivity, only the Color value (affecting color noise) changes, but not Luminance (luminance noise). Then I assumed that with the same value of Luminance and with increasing sensitivity, luminance noise would grow in proportion to how it happens in the absence of noise reduction. It wasn't there. Noise increased, but not so much. I'm not going to guess how this happens, but I was pleased with the result of the intelligence of Capture One.

In the next experiment, I tried to find the minimum noise reduction setting that would satisfy me and compare how much softer my settings are with those that Capture One offers by default. The changes were so minor that they can be neglected: for ISO 3200, Capture One suggested a value of 25 and 54 (Luminance and Color), but I found softer values ​​\u200b\u200bto be acceptable: 20 and 50, respectively. For ISO 6400, Capture One's own noise reduction settings completely satisfied me, and I did not touch them (25 and 57).

There are a few other goodies to make noise reduction even more effective. Surface (surface) allows you to reduce large-scale noise spots on low-contrast, smooth surfaces, while not touching fine details such as text (value 70 for ISO 3200 and 90 for ISO 6400). Single Pixel allows you to remove single pixel noise (individual knocked out pixels) without losing fine details. True, such pixels appear only at ISO 6400 or when the matrix overheats in Live View mode. Despite the fact that the sensitivity of the matrix of 6400 units was used in the noise reduction test, I did not use this Capture one setting, since the impact of the main tools was enough.

I am very pleased with the quality and features of Capture One noise reduction. Unlike the denoisers discussed above, Capture One does not create color halos or reduce color saturation in small details of the image. Color noise in shaded areas is also significantly better suppressed than previous competitors. This speaks of high quality color noise reduction algorithm. Thanks to the Surface action, luminance noise also looks weaker, especially on plain surfaces.

You can see the results of noise reduction in Capture One on photos 12 and 13. However, it remains to test a competitor among RAW converters - denoising in Lightroom.

Photo 11: Capture One noise reduction.
Photo 12: the result of using Capture One noise reduction for ISO 3200.
Photo 13: the result of applying the same noise reduction for ISO 6400.

Lightroom and Adobe Camera RAW

I even downloaded the new Lightroom - 4.3... In all previous versions Lightroom, its noise reduction, according to users, was considered a weak link and was not recommended for use. Those. after converting RAW files to Lightroom, noise reduction had to be done in Photoshop. But Photoshop's noise reduction loses much in the quality of at least Capture One, and I can't recommend this chain (Lightroom > Photoshop) for noise reduction. Out of the corner of my ear, I met a mention on the forums that Lightroom noise reduction, starting from the fourth version, has been improved. Wanting to clarify this information from experienced users, I again ended up on the Lightroom forums. And what I read there did not please me in any way: brakes, difficulties in work, glitches, in general, everything is as always with the RAW file converter from Adobe. This finally turned me off from installing Lightroom, and instead of its noise reduction, I will test a similar Photoshop tool - Adobe Camera RAW. I noticed a long time ago that the settings of these two Adobe products are identical, and lead to the same results after processing RAW files. That is, the operation algorithms of both programs are the same (it would be strange for one manufacturer to make two versions of noise reduction). If I'm wrong and you have a good reason for this, please let me know.

In order to reduce noise in Adobe Camera RAW, you need to go to the Detail tab (Details). This noise reduction has more settings than the noise reduction in Photoshop (photo 14). By default, for files of both sensitivities, Camera RAW offers not to reduce luminance noise, but to reduce color noise (Luminance - 0, Color - 25, Color Detail - 50). At these settings, color noise is nicely suppressed, and (as in Capture One) I don't notice any color halos. Wonderful. The Color Detail slider (color details) helps to adjust (return) color saturation for small details (remember, Photoshop had a problem with noise reduction). I left the default Color Detail value, i.e. 50. But I lowered the main Color setting to 15 (for ISO 3200) and 20 (ISO 6400).

Luminance patches on smooth surfaces remained visible but unobtrusive at Luminance values ​​of 55 (for ISO 3200) and 70 (ISO 6400), but did result in a slight reduction in text detail. Therefore, I chose a compromise value of Luminance Detail - 40 (for ISO 3200) and 50 (ISO 6400).

I really liked how Adobe Camera RAW reduces noise ( photos 15 and 16) that I was wondering if a wider use of the 6400 sensitivity on my camera is acceptable. If we added the Surface setting as in Capture One to this noise reduction, then it would have no equal. I wonder how the places among the noise reduction leaders will be distributed at the end of this photography lesson.

Photo 14: Adobe Camera RAW noise reduction (settings identical to Lightroom).
Photo 15: The result of using Adobe Camera RAW noise reduction for ISO 3200.
Photo 16: the result of applying the same noise reduction for ISO 6400.

Noise reduction test results

The results of the noise reduction test in photos 17 and 18: the worst - at the top, the best - at the bottom. When shooting at high sensitivity values, I do not recommend using Photoshop's noise reduction for bitmaps and Canon Digital Photo Professional. The main reason is strong color halos around colored parts in the photo. Also in these noise reduction devices it is difficult to find a compromise between the level of luminance noise on smooth surfaces and the sharpness of fine details. Capture One, against the background of the first two, looks to be in a winning position, until Adobe Camera RAW noise reduction comes into play. The latter showed that in many cases I can use the 6400 sensitivity for commercial shooting as well: amazing luminance noise reduction for smooth surfaces while maintaining fine details and good job to reduce color noise. What do people working in Lightroom complain about, I don’t understand?

Photo 17: Comparison table of noise reduction for ISO 3200.
Photo 18: Comparison table of noise reduction for ISO 6400.
Photo 19: Charming noise.

Conclusion

If during shooting you want to use high sensitivity values, then start dealing with noise at the shooting stage - shoot in RAW format. Do not shift the noise reduction process to Photoshop, do it in the RAW converter when correcting photos. Use the converter that with less loss (and loss is inevitable) will reduce the noise in the photo. Use the minimum noise reduction settings.

If the photo has strong noises, then in some cases it is possible to limit ourselves to reducing only color spots. The remaining luminance noise will be very similar to film grain. Sometimes such grain imitation is even more preferable than a smooth picture. digital camera. For example, if you stylize a photo as an old one. In other cases, the grain can give a certain charm to the picture ( photo 19). No wonder there are Photoshop filters that create a similar film grain. But, that's a topic for another lesson.

PS: Not the latest versions of Adobe Camera RAW and Capture One were used in this noise reduction test. Therefore, it is possible that the noise reduction algorithms in these programs have become even more advanced.
PS: Don't make noise!

Noise can ruin the most beautiful photo, which is why it is so important to be able to clean it up software methods. Using Photoshop, you can significantly improve a noisy photo by improving its quality with the help of special filters.

In the photograph taken as an example, the background noise is visible only when approaching, but it spoils the impression of the work. Let's try to fix this using the standard program filter.

Select Filter>Noise>Reduce Noise and set the values ​​in the dialog box that opens. For this image, the settings are as follows:

As a result, the color noise is gone, and in general the image looks much better:

Even low quality photos can be corrected in Photoshop. An example of a photo with strong color noise taken in poor lighting:

Open the image in Camera Raw; To do this, select File>Open As and select the following format:

The first thing to do is to remove chrominance noise, for this we go to the corresponding filter menu, marked with an icon of black triangles.

Set the Luminosity to maximum and then adjust the Luminosity Info so that the image doesn't look flat. After applying these settings to the preview, you can see that the photo has become blurry and has lost the clarity of the contours. You can restore the sharpness using the "Sharpness Adjustment" menu - adjust the position of the "Effect" and "Radius" levers until you get a satisfactory result.

Now you can evaluate the quality of the improved image using before and after photos.

Good day! We continue to slowly fill the rubric! In this article I want to tell and show you one of the fastest and easiest ways how to remove noise in photoshop. In order to reveal this topic in more depth and detail, I specially selected such an image, in which I will show how to remove luminance noise and color noise from the image.

In general, the whole noise, an unpleasant problem digital photos made in the dark and now we are solving this problem with you. First, let's open our noisy image and evaluate the situation as a whole.

We go to the menu File/Open or use hotkeys CTRL+O. By the way, you can also open an image using the " Open as...» ( ALT+SHIFT+CTRL+O), find and select our image with noise, then to the right of the "File Name" field, select open as the file type "Camera Raw" and our image immediately opens in the Camera Raw filter.

I open my image first, in the usual way, to further show how to go into the special "Camera Raw" filter, select the desired tab and perform noise reduction operations. Now let's evaluate my image, which has chroma and luminance noise. Here it is:

Image with color and luminance noise

There is more than enough noise in this image. You probably have already begun to doubt that we will succeed .. Of course, it will not be possible to completely remove all the noise, but it is easy to make the image less noisy. Let's move from theory to practice!

Step #1

So, I opened my image in Photoshop, now I need to go to a special filter - "camera raw filter". To do this, I go to the top menu Filter/Filter Camera Raw, or use hotkeys ( SHIFT+CTRL+A).

Go to Filter/Filter Camera Raw...

Step #2

The Adobe Camera Raw filter window opens in front of us. We put a tick at the top in the "Control view" item to immediately see the changes in the image while working in the filter. Next, select the "Details" tab, I have this third icon on the left. In the lower left corner, you can change the image scale, we will need it soon.

Adobe Camera Raw filter window

Step #3

We find the "Color" slider and slowly move it to the right until the color points disappear. Do not try to remove the luminance noise at this stage, for now we are removing only the color noise (color points). As soon as the color dots disappear, immediately stop moving the slider.

Zoomed the image up to 300%

This is what we got at this step after some simple manipulations with the "Color" slider. Note that the colored dots (color noise) have completely disappeared from the image. Now it remains to remove the luminance noise.

Color noise in the form of color dots is completely removed

Step #4

Now let's start removing the luminance noise. In order to do this, we find the “Luminance” slider and slowly move it to the right, while observing our image in parallel. When it is enough, we determine it individually in each case, but the value of "Luminance" in any scenario is always higher than the value of "Color". Here's what happened:

This is the picture we got, the noise is almost completely gone

Step #5

As a result of all our manipulations, the sharpness of the image has decreased. To increase the sharpness, move the Effect or Brightness Info sliders to the right. You can move these two sliders or any one of them.

But keep in mind, you need to move the sliders very carefully, because you get the opposite effect, the more you add sharpness, the more noise appears. At the end, do not forget to click the "OK" button in order to save all changes.

Sharpening Carefully

Now let's look at the result of all our work to remove noise from the image. As a result, we got an image on which there is practically no noise, the result is quite decent. I think now you will no longer have a question about how to remove noise in photoshop.

This is what happened after processing to remove noise

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That's all for today, thank you for your attention, see you in the next lessons!

Hello. Today you will learn how to edit a photo spoiled by a high content of "noise", reducing it to a minimum. But in order to avoid such an effect initially, you need to remember the ideal ratio of the "exposure", or the exposure triangle (aperture, shutter speed and ISO setting). It can be found in this article.

The surest way to remove noise is to use the main filter in this case Reduce Noise (Reduce noise). But the author also uses Surface Blur (Blur on the surface), as another way to eliminate noise and graininess. Let's see what the result of such a duet of the above filters will give us.

Original image (top) and final image (bottom). Enlarged fragments are shown in the corner for better comparison.

The effect is great, isn't it? Then let's move on to the method described by the author of the lesson.

Step 1

Select the photo you need to process. Open it in Adobe Photoshop and duplicate the original layer. Open filter Filter - Noise - Reduce Noise(Filter - Noise - Reduce Noise). This filter is designed solely to eliminate color noise in photographs taken in low light conditions.

Let's take a closer look at the influence of each parameter on the photo in turn.

Strength(Intensity) - the main parameter to reduce the brightness noise. The result after changing the parameter.

Reduce Color Noise(Reduce Color Noise) - Changes the strength of chromatic noise, otherwise removes color pixels that occur in JPEG images. On the left is an image with 5% color noise reduction, on the right is 90% (desired result). The result after changing the parameter.

Sharpen Details(Sharp Details) - Preserves the sharpness of the edges of an image to emphasize some details. On the left, the parameter is set to 74%, on the right, to 0%. The result after changing the parameter.

Depending on your image, adjust the above options in your own way. Basically, we only need Strength(Intensity) and Reduce Color Noise(Reduce Color Noise), other settings can be reduced to zero.

And the last parameter Remove JPEG Artifact(Remove JPEG artifact) - serves to reduce artifacts during compression, after saving the image, in JPEG format. In this lesson, the author did not use it, since a high-resolution image was used.

Original (top) and edited (bottom) images.

Step 2

Duplicate the edited layer. Choose a filter Filter - Blur - Surface Blur(Filter - Blur - Blur on the surface). This filter will help remove all the flaws that the previous filter left us. reduce noise(Reduce noise). Surface Blur blurs an area with a uniform tone, while small details are either not blurred or blurred slightly. There are two Surface Blur options:

Radius(Radius) - the size of the blurred area. Threshold(Isohelion) - Blurring adjacent pixels with the main blurred area. With these parameters, you also need to be careful, and adjust for each image individually.

The result of applying the Surface Blur filter (bottom).

Step 3

Combine two duplicated, edited, using the previous filters, layers into one group. Change Opacity groups by 65%.

The original image (top) when zoomed in, and the final image, with two filters applied and reduced opacity, the image (bottom).

Thus, by applying two different filters, but designed for the same purpose, we have achieved the desired result.

HEY!
Digital cameras have one unpleasant feature. They regularly add noise to the pictures. Digital noise refers to extra colored or monochrome dots that should not be present in the image. With a high resolution photo, noise may not even be noticeable. But the secret becomes clear when viewing the photo at the maximum scale. Noise can be eliminated with graphic editor Adobe Photoshop. But don't count on miracles. If there is a lot of noise in the picture, then you may lose detail.
Noise Reduction in Photoshop

Before working on noise reduction in Photoshop, let's get acquainted with the theory: Digital noise does not always appear in images, you yourself know this very well. If the shooting takes place in good lighting conditions (preferably in nature), and the sensitivity value is not higher than ISO 100, then there is nothing to be afraid of. At such moments, noise can appear only in a cloudless sky, if there is a lot of it in the frame. But this does not always happen either.

Everything changes if the shooting conditions change and the sensitivity increases. Then it all depends on the specific camera. Professional DSLRs allow you to increase ISO to incredible values. unpretentious SLR Cameras are no longer capable of it. When using them, noise starts to interfere already at ISO 400-800. Well, there is nothing to say about compacts. When using them, it is not at all recommended to change the ISO value from the standard “weave”.
Noise in Photoshop: ISO, matrix

But what about the owners of inexpensive cameras? After all, not all of them are able to purchase a camera for several thousand dollars. Perhaps the best way out is to try to increase the illumination around you. If shooting takes place in the evening, then use the flash. Even the built-in flash in the camera will allow you not to increase the ISO value. Or you can try to increase the shutter speed to a few seconds, while placing the camera on a stationary object or attaching it to a tripod.

You have heard many times that professional photographers carry a tripod with you everywhere. They don't just do it. Raising the ISO is never recommended. Even on expensive DSLRs, increasing this value will affect the pictures. Yes, digital noise will be barely noticeable even when viewed at maximum zoom. But this is also best avoided. Therefore, experienced photographers adjust the aperture and shutter speed to improve the quality of the picture. However, it is not always possible to change the aperture, because this may not correspond to the creative intent of the photographer. Recall that changing this setting may result in a blurry background. If all objects should turn out sharp, then the aperture must be covered. Then how to increase the amount of light received by the matrix? That's right, greatly increase exposure. It is in such cases that a tripod comes to the rescue, allowing you to leave the camera motionless for a few seconds.

You may also not understand why camera makers can't completely get rid of the phenomenon of "digital noise". Everything is simple. Any matrix has a certain number of photocells - pixels. The more of these pixels, the more they will interfere with each other when the voltage increases. Namely, this is what happens when you try to increase the sensitivity. If the matrix resolution is low, then digital noise can only make itself felt at ISO 800-1600 and above. But the creators in most cases try to increase the resolution of the sensor without thinking about the consequences. That is why there are so few cameras with a 36-megapixel matrix in the world. It is extremely difficult to make such a sensor noiseless. But you can, this is proved by expensive professional SLR cameras.

The LCD screens on which the created frame is viewed do not help when shooting. Their resolution and diagonal are not large enough to make out the digital noise. And sometimes the photographer does not have enough time to zoom in. Therefore, you have to work on eliminating noise in Photoshop.
Removing noise in Photoshop

It may seem to some that removing noise in Photoshop is very simple, and partly it is. You just need to use the appropriate filter or plugin, if one is installed. And it is very good when the photo is saved in RAW format. The fact is that it is with such images that it is easiest to work. But we will return to this topic closer to the end of the lesson. In the meantime, we will take as an example a snapshot of a city at night. It is obtained using one of the cheapest "soap dishes". The light sensitivity of the matrix at this point was increased to ISO 800. It is not surprising that digital noise is very visible.

Open a similar picture and go to "Filter> Noise> Reduce Noise".

As you can see below, the result is satisfactory. We lost sharpness, which was already useless, but the digital noise was almost completely gone. Some of its signs can now be seen only in the blue sky.

Let's now try to figure out how to remove noise in Photoshop in a RAW image. In this format, frames are saved by DSLRs, system cameras and advanced compacts. To do this, we will take a photo that shows cars entering the city (if you are familiar with all our lessons, then this frame will already be familiar). This is a RAW file taken with a Sony Alpha A65 camera. The digital noise is invisible in this photo. Unless you use 100% view scale. Then the noise becomes visible, especially against the background of trees and a gray car.

On the right side of the working window are all the sliders you need. They are divided into two sections. One is dedicated to working with sharpness. The other one is for noise reduction. It is with the second group that our work to eliminate digital noise begins. Sometimes it is enough to increase the "Luminance" parameter. In other cases, you will also have to work with four other parameters. And only in the most advanced cases will you have to go to the first section, trying to restore sharpness.

In our case, it was necessary to adjust only one parameter. The sharpness has slightly deteriorated, but this is noticeable only when directly comparing two shots at 100% scale. But we got rid of the callous points. From now on you know how to reduce noise in Photoshop. Not to mention that you've learned about another advantage of the RAW format. If you have a good camera and you have enough processing time, then try to save images in it. Subsequent work in Adobe Camera RAW allows you to pull everything out of the frame. In the future, you can even try to sell it in photo stocks. But this is a topic for a separate lesson.

In some cases, the user has an idea to turn a high-quality photo into a low-quality one. This will make the viewer think that the picture was taken with a simple compact or smartphone. Therefore, it is worth talking about how to add noise in Photoshop. And this is done, as many have already guessed, by going along the path “Filter> Noise> Add Noise”.