What is Image Noise in Night Photos

Last Updated on September 22, 2022 by Peter Wood

If you want to take some stunning night shots, you have to optimize image noise. What causes the image noise? And how to fix it? You can learn more about eliminating photo noise in night shots with multiple solutions. To shoot for a stunning night photograph, you can use the useful tips.

Things may always happen. You get a night image with noises, such as the pixelated small dots. Sometimes, when you shoot a photo with your digital camera or phone camera, you may perhaps find that the photo appears good in your camera. While as you import photos from iPhone to computer or zoom in to view it in a full screen, you will find that the noises are becoming quite visible.

What is Image Noise

Part 1: What is Image Noise for Digital Photograph

In digital photographs, the word noise in terms of sound can describe visual distortion. Image noises in photography taken with digital cameras are random pixels scattered throughout the whole photo. To some extent, digital noise in photos always exists, no matter how professional a DSLR camera you have. Digital photo noise presents the variation of brightness or color information in pictures. Given the noise in photography can ruin a photo's quality, Digital noise is usually considered undesirable. To avoid and reduce noise in your photographs, you should look at the reasons that cause image noise.

Dark Noise

Part 2: What Causes of Image Noise

Today, digital images noise is a common problem in digital cameras. Image noise originates from the camera electronics sensor or the high sensitivity of the camera sensor. The camera sensor equipped every digital camera can collect light particles via tiny buckets. Those buckets are called photosites, which finally become pixels in a digital image. In short, the smaller the photosites, the more noise image gets.

Objectively, the camera electronics sensor is not good as any other electronic sensor and includes some noise (also known as white noise). Although, in most lighting, the light is appreciably sharper than the noise. In some scenes, things can be different.

When you shoot photos in a scene where the light is low or needs a high amplification, the image noise levels can become significant. It will result in pixels in digital photos that include more noise data than photo light data. So noise in photography often occurs as you take night sky photos or dark scenes indoors.

Besides, implementing the high sensitivity in digital photography by mechanisms that result in amplification. The camera sensor amplifies the measurements it takes. When you amplify the actual photo light falling on the camera sensor pixels, you amplify both noise and the photo light. Consequently, not only does the camera sensor become sensitive, but also the noise automatically increases. In brief, when you apply so much amplification, some pixels will represent noise.

Camera Sensor

Part 3: How to Avoid Image Noise

Image noise in photography is a nuisance. Fortunately, you can avoid and remove image noise as long as you try the correct method. To take digital photos or directly print out a stunning photo via a photo printer, it is necessary to know how to reduce noise in the camera is possible.

Select a good camera. If you are struggling to eliminate noise in photography, the most convenient way to minims image noise is to purchase advanced camera equipment. For example, pick a newer digital camera including a sensor to collect more light with less noise. And choose a camera with a larger electronics sensor. Compared with a large sensor, a small sensor produces a much noisy image.

Nikon D7100

Switch camera exposure to manual mode. Adjust the settings, which may introduce image noise. Except for the camera sensor size influencing the photography noise level, the sensitivity level of the camera (also known as ISO) causes image noise. The higher ISO makes your camera sensor more sensitive to available light, the more chance your images have noise.


Turn the camera’s noise reduction setting on. Some cameras have a built-in effect named noise reduction. It helps combat noise in your digital photos, especially those taken in low-light conditions.

Noise Reduction Settings

But if your camera doesn’t offer a noise reduction option, you can still minimize the noise in photography through other helpful ways. For instance, you can make your image as bright as possible, avoid digital zoom, and keep your camera stored in a cool place.

Part 4: Noise Reduction in Post-Processing

Reducing image noise in post-processing is also essential. If you already have an image with too much image noise, you can get rid of annoying noise in photography through WidsMob Retoucher with the advanced AI algorithms. It not only provides 3 different AI Retouch features to remove the image noises automatically but also provide manual settings to adjust sharpness, chrominance, and luminance. Moreover, there are some stunning effects to make a neat photo.

1. Provide 3 different AI de-noise methods, lowlight recovery, noise reduction, and haze removal.

2. Fix film grain, JPEG compression artifacts, and other imperfections for JPEG files and RAW formats.

3. Even if there is a portrait image, the program can touch-up skin and smooth face with advanced algorithms.

4. Deliver exceptional detail and outstanding image quality with a distinctive natural look in a batch process.

Win Download Mac Download

Step 1: Add images with noise

Once you have installed WidsMob Retoucher, you can launch the program and click the + button to import the noise images to the program. If it is a portrait image, the program can detect the portrait and beautify the photo in good quality.

Import Image Noise Retoucher

Step 2: Turn on Before/After

Double click the image, to preview the noise reduction effect, you can choose the Before/After mode from the View menu. Moreover, you can also zoom in to preview the detail of the image, rotate the image, or make some adjustment beforehand.

Preview Before and After Retoucher

Step 3: Apply AI de-noise methods

Go to the AI Retouch menu and choose the Noise Reduction option to apply the AI technology to reduce the image noises from the night image. Moreover, you can apply the lowlight recovery, haze removal, and other parameters easily.

Apply AI Noise Reduction Retoucher

Step 4: Tweak noise reduction manually

When you need to reduce image noise for different parameters, you can go to the Adjust menu and scroll down to tweak the settings for Chrominance, Luminance, and Sharpness. Just adjust the sliders to get the optimal photo effects manually.

Tweak Image Noise Manually Retoucher

Step 5: Save image to computer

Moreover, you can apply more photo effects and filters to get the optimal file. If you are satisfied with the output, you can click the Save button to turn the noise image into a neat one on your computer or share the output image with social media websites.

Win Download Mac Download


After reading this tutorial, you can remove image noise and enjoy high quality of digital images. Noise in photography is usually unwelcome due to the noise images seeming like a lower quality. But, to some degree, having noise in photography creates images film-like. You need to optimize the noise images and turn them to be your specific, such as make black and white film photography. Noise pictures can uniquely show your life, as long as you process those in the right approach.