What is Image Noise Reduction for DSLR Camera And Smartphone
Last Updated on November 15, 2021 by Peter Wood
When you take photos with smartphones, you will pick up noise from a variety of sources. Even if you use some expensive DSLR cameras to shoot in low light or high ISO settings, you have to deal with the noise of images. And then you have to use some application for noise reduction.
What is noise reduction for images? To remove the image noise, you should know more about the different categories of image noise and the technology for noise reduction. Just learn more detail about the tips about noise reduction from the article.
Part 1: What is Image Noise Reduction
Image noise reduction is the noise removal process of smoothing the image pixels and compromising fine detail. Usually, image noise reduction includes chroma noise (color noise) and luminance noise according to the color pixels of the noise. As for image noise reduction, we often refer to removing the noise of landscapes or the whole image. Remove the wrinkles or beautify portrait should be an image noise reduction technology.
Chroma noise is showed as a flat color with multicolored pixels in an area of an image. Luminance noise is monochromic. So it will be less colorful and more like grain. The noise reduction software controls the chroma and luminance noise reduction separately to get a better image.
Part 2: How to Reduce Noise for Photos on Windows 10/8/7 and macOS
Sometimes, you took some photos but found they were not clear and contained small dots. These dots maybe not very noticeable on a small screen, but they will become visible when you zoom in on the photos on your computer. It is annoying as you cannot take them one more time. From this point, we recommend WidsMob Retoucher. Its main features include:
- Reduce various noise from pictures in a single click.
- Protect the quality of your photos automatically.
- Support tons of image formats include RAW files.
- Offer a portrait retouch tool to denoise selfies easily.
- Share noiseless images to social media directly, like Facebook.
In short, it is the best choice to reduce noise from photos on your computer.
Step 1: Add image into the noise reduction software
Click the Import button to add the image to the program. The program supports both RAW files and JPEG. Once you add the photos to the program, you can turn on the Before/After mode to preview the effects of the noise reduction software.
Step 2: Reduce noise for different scenarios
Dark Noise: When you take a photo in a dark environment, you should find JPEG artifacts and image noises. Adjust the Luminance, Chrominance and Sharpness feature to remove noise for the image, or even remove JPEG artifacts.
Portrait Noise: As for portrait images, the program has a special algorithm to beautify portrait images. Once the program detects portraits within one photograph, you can adjust the Intensity for Skin Soften to optimize the portrait image.
Old Noise: After some time, you can find some yellow and noise for the image. And you can optimize the old image with the Luminance, Chrominance and Sharpness.
Snow Noise: When you get photos with high ISO, such as snow environment. There should be lots of noise as for the situation. You can also use the program to reduce image noise for the case.
Move Noise: For taking moving stuff, even the DSLR camera will get lots of noise. When you add the image to the noise reduction software, you can get a better one with ease.
Step 3: Share the images to social media
After you remove the noise from the images, you can click the Share button to send them to social media websites. Of course, you can also save the files to your computer.
Part 3: How to Reduce Image Noise When Taking Shoots with Smartphone
Whether you are using a DSLR camera or smartphone, you should know more about the gear first. Even if you are using iPhone, the HEIC format is different from the JPEG format. Here are some tips to reduce image noise for your gear.
1. Set the proper exposure and focus. As for the smartphone, you can use some exposure compensation applications.
2. Choose the correct white balance. When you nail the white balance, the natural look should be different from the alien one.
3. Adjust shutter speed and ISO. Some Android phones have a manual mode option built-in. Of course, you can also use some Apps to do the job.
4. Take advantage of the environment light to illuminate the subject, as the brighter part shows less noise.
5. Do not use the zoom feature when the subject is far away. You have to move closer to get a better picture of noise reduction.
6. Take the photos in RAW formats. Different from the JPEG format, RAW files preserve more details for the images without reducing noise.
7. Use the professional features of the camera applications of a smartphone, such as Camera MX, which provides complete control of resolution and clear visuals that ensure a sharp image.
Part 4: How to Take a Noiseless Photo with Camcorder
In addition to general noiseless photos by post-production, you can also get rid of noise when taking images. If your camera always produces noisy images, it means two things that either the size of your camera sensor is too small or the ISO level of your camera is too high.
If you are in the former condition, the only solution is to replace your camera sensor or digital camera.
For the latter situation, you have something to do. By changing the ISO level in your camera, you can reduce the sensitivity of the camera sensor. Then the shutter speed will slow down. Although it can help you produce noiseless photos theoretically, it could introduce a camera shake or blur your images. The good news is that more and more digital cameras, such as Nikon D90, have the Auto ISO feature, which can increase and decrease the sensitivity of camera sensors based on the amount of ambient light.
Other tips you should know about noiseless photo include:
- Zoom to at least 1:1. You should understand that every photo contains noise if you zoom in enough. It means that noiseless image is related to the level of zoom-in. When you want to produce it in the post-production stage, you’d better zoom in on the reducing level according to your usage.
- Correct the expose of your camera. You can find it in the settings menu on most digital cameras.
- Focus on noiseless photo last. After taking images, you may want to edit them, such as rotate, crop, and more. De-noise should be the final step. It will allow you to have a final version of the photo with the best display.
- Use the right photo editor. There are many photo editing software, such as Photoshop, Lightroom, GIMP, and more. Some of them are pretty expensive. And others are free to use. When it comes to photo noiseless, you’d better look for a powerful but easy-to-use utility since most photo editors can only reduce noise manually. That may be a challenge to beginners.
Conclusion
Based on the guide above, you should understand how to produce noiseless photos during photography or post-production. You cannot avoid noise when taking images. The dust on your lens, incorrect settings on the digital camera, wrong corner or light, and other elements can lead to noise photos. Of course, you can remove it from your photos. We share some tips to help you avoid noise when taking images. And you can reduce noise with WidsMob Retoucher. It is not only easy to use but also able to denoise photos without quality loss. We hope that our guide is helpful to you.