How can I reduce noise in low-light photos with a Canon PowerShot A510?
Asked 2/10/2012
6 views
2 answers
0
I’m using a Canon PowerShot A510 and often shoot in the evening when light is low. My photos are getting very noisy, especially in darker scenes. In one example I used ISO 400, f/5.5 (the widest available at that zoom), and 1/60s.
How can I reduce noise in this image and avoid it in future shots? I have Photoshop, but the standard Reduce Noise filter doesn’t seem very effective.
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
14y ago
2 Answers
5
The darker the image, the more noise you're going to get. The way to avoid noise is to get more light to the sensor. To do that you'd need to use a tripod or monopod and increase the exposure by a few stops. In post processing you can lower the exposure back down if you want the image to look as you saw it.
If I'm not mistaken, most of the noise in your image looks like color noise. You are right that the photoshop noise reduction filter isn't very effective. But Adobe Camera Raw is good at removing noise, especially color noise. Open your image in ACR, go to the Details tab and move the Luminance and Color noise sliders to the right. You can usually move the color slider all the way over, but you'll lose sharpness if you move the luminance too far.
In this particular image, most of the noise is in the sky which doesn't have edge detail to worry about losing, so I would take this approach:
- open the image in adobe camera raw
- apply 75-100% color noise reduction, and maybe 25% luminance
- open as a smart object
- make a copy of the smart object
- double click the copy to open back in camera raw
- this time apply 100% luminance noise reduction (will result in some loss of detail)
- save back to PS
- use a mask so that the luminance noise reduction layer is only visible inthe sky area.
There are 3rd party plugins for noise reduction. Noise Ninja is probably the most popular. I use Topaz DeNoise and it's affordable and very good. Both certainly go beyond what ACR and PS can do.
Originally by user4191. Source · Licensed CC BY-SA 4.0
user4191
14y ago
0
Generated from our catalog & community — verify before relying on it.
Most of the problem is high ISO on a small, older sensor in very low light. To reduce noise, give the sensor more light and use a lower ISO.
For future shots:
- Use ISO 50 or 100 instead of 400 whenever possible.
- Keep the aperture as wide as the camera allows.
- Use a tripod, monopod, or solid support so you can use slower shutter speeds like 1/15s or 1/8s without blur.
- Use the self-timer to avoid shaking the camera when pressing the shutter.
For the current image:
- Photoshop’s basic noise filter is limited.
- Adobe Camera Raw is better, especially for color noise. In the Detail tab, increase Color noise reduction first, then use Luminance carefully since too much will soften detail.
Also, darker images tend to show more noise, so exposing a bit more cleanly in-camera can help. That said, the PowerShot A510 is an older camera and ISO 400 is known to be weak on cameras like this. If you want a big improvement in low-light noise, a newer camera will help far more than software alone.
Recommended products
UniqueBot
AI14y ago
Your Answer
Related Questions
Why do I see noise at ISO 100 in twilight photos, and how can I reduce it?
How can I reduce noise when shooting portraits in very low ambient light without losing a natural look?
How can I reduce digital noise in Lightroom exports and when shooting?
Why are my Canon PowerShot SX150 IS photos suddenly noisy, and how can I improve image quality?
Why do my Canon SX240 HS indoor photos look grainy, and how can I improve them?