Image Noise

What is Image Noise in Night Photos


If you are planning on taking some night shots, you need to take image noise into consideration. What causes the image noise and how to fix it? You can learn more detail about eliminating photo noise in night shots with multiple solutions. In order to shoot for a stunning night photograph, you can use the tips to fix photo noise accordingly.

Things may always happen, you get a night image that with small dots all over the image. 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 and view the image and view the image in maximum on your PC, you will find that the small dots are becoming quite visible.

Image Noise

Part 1: What is Image Noise for Digital Photograph

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

Dark Noise

Part 2: What Causes of Image Noise

Today, digital images noise becomes a common problem in digital cameras. Image noise originates from the camera electronics sensor or the high sensitivity of the camera sensor or both. The camera electronic sensor that every digital camera is equipped, designs to collects light particles via quite tiny buckets. Those buckets called photosites, which final become pixels in a digital image. In short, the smaller the photosites, the more noise the image gets.

Objectively, the camera electronics sensor is not perfect just as with any other electronic sensor and includes some noise (also know as white noise). Although, in most lighting the light is appreciably stronger than the noise, in some scenes things can be totally different.

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

Besides, the high sensitivity in digital photography is implemented by mechanisms that result in amplification. The camera electronic sensor amplifies the measurements it takes. Basically, when you amplify the actual photo light that falls on the camera sensor pixels, both noise and the real photo light is amplified. Consequently, not only the camera sensor becomes sensitive, but also the noise automatically increases. In brief, when so much amplification is applied that some pixels will represent as noise.

Camera Sensor

Part 3: How to Avoid Image Noise

Image noise in photography is a nuisance. Fortunately, you are able to avoid and remove image noise as long as you try the correct method. In order to take digital photos or directly print out a stunning photo via photo printer, it is necessary to know how to reduce noise in 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 purchase the advanced camera equipment. For example, pick a newer digital camera, which includes a sensor that is developed to collect more light with less noise. And choose a camera with a larger electronics sensor. In general, compare with a large sensor, a small sensor with a large number of pixels produces noisier imager.

Nikon D7100

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


Turn camera’s noise reduction setting on. Some cameras have a built-in effect named noise reduction. This is helpful in combating noise in your digital photos, especially those taken in low light conditions.

Noise Reduction Settings

But if your camera doesn’t offer noise reduction option, you can still minims noise in photography through other helpful ways. For instance, making your image as bright as possible, avoiding using digital zoom and keeping 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 that has too much noise, you can get rid of annoying noise in photography through WidsMob Denoise. Just check the features of the program as below.

1. Whether taking shoots for moving staff, lowlight environment, touches up the old images or portrait. You can get the desired effects with ease.

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

3. Even if there is a portrait image, the program is able to 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.

Download for Win VersionDownload for Mac Version

Step 1: Add images with noise

Click the “Import” button to add the noise image into the program. If it is a portrait image, the program is able to detect the portrait to beautify photos in excellent quality.

Step 2: Turn on Before/After

In order to preview the effect, you can choose the “Before/After” mode, you can find the effect for image noise reduction for different parameters, Chrominance, Luminance and Sharpness.

Dark Noise

Step 3: Save image to computer

If you are satisfied with the output, you can click the “Save” button turn the noise image into neat image on your computer or share the output to social media websites.


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

Rate This Post

(9 votes, average: 4.78 out of 5)
Peter Wood
Peter Wood

Leave a Reply