Sunset in Kruger

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noise is generally undesirable in photography, and many photographers want to try and reduce it when taking photographs. Noise reduction tends to be about preventing noise in the first place, where as noise removal is a description of post-processing techniques for dealing with noise that is in a ...

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11
votes
1answer
363 views

What is the statistical distribution of sensor noise?

Sensor noise is a random variation in pixel values, but what kind of random is it? Does it follow a normal distribution, one of the gamma distributions, or something funky like an F distribution? ...
13
votes
1answer
1k views

Is in-camera high-ISO noise reduction worthwhile?

I shoot in RAW and post-process in Aperture where needed. Does the in-camera noise-reduction do anything that I can't do in Aperture or other post-processing software? It seems to add a bit of time ...
19
votes
10answers
1k views

How do I reduce noise, given that I have complete control over everything else?

I want to take some pictures of some crystals. Being crystals, they don't move around much so I can set up my camera and lighting as I like. I have a high-powered halogen light shining on them, and ...
22
votes
5answers
915 views

Is there any noise difference between averaged and long exposure photos?

Let's suppose I'm on a tripod, photographing a perfectly still scene (also dark) and I take these photos: 5 photos at ISO 3200 and 1s exposure 1 photo at ISO 100 and 5s exposure There is a common ...
3
votes
4answers
1k views

How can you reduce noise in Lightroom 3?

I'm seeing that Lightroom 3 has noise reduction capability, but I'm looking for a good tutorial or other in how to use it practically. Can anyone out there point me to a good tutorial, or provide one ...
5
votes
3answers
1k views

Reducing chroma noise in Aperture

I have some photos shot in low light with a compact camera which exhibit significant chroma noise, which I’d like to correct as much as possible. My searches turned up a technique called “chroma ...
13
votes
3answers
5k views

What are the pros/cons of the high-ISO noise reduction feature on D90?

So my D90 offers "High-ISO Noise Reduction". Sounds like a good thing, but obviously there must be a cost of some kind. The settings are "Off", "Low", "Normal", and "High", and the default is ...
11
votes
5answers
5k views

Does “long exposure noise reduction” option make any difference when shooting RAW?

I can configure my camera (5D) to use long exposure noise reduction (dark frame is exposed and subtracted), but is this method really effective when shooting RAW? Or is the actual subtraction only ...
21
votes
8answers
2k views

How can I reduce the noise present when taking pictures without lowering my ISO?

I know that high ISOs tend to produce more noise, and some cameras' software can handle that noise better than others, but are there any other settings or conditions tha affect visible noise? I'm ...