Shadowy Daisy

Shadowy Daisy
by damned-truths

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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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9
votes
2answers
1k views

Where does the noise come from in a long exposure?

I created another test. This time I exposed for 36 minutes, because I wanted to test star photography. This is not meant to be a nice photo; I really just tested. Camera was inside the house behind ...
5
votes
3answers
232 views

Will I miss any features of Lightroom 3 if I already have Adobe Photoshop Extended CS 5.5?

I am planning to upgrade my CS4 to CS5.5 (Design Premium) - I heard Lightroom 3 has new cool features such as new and improved noise-reduction in photos. Do you get pretty much all the features of ...
11
votes
3answers
3k views

Does the order of sharpening and noise reduction matter?

I have been shooting for more than three years, but I never do too much in post-processing. I tend to be strict and keep in mind that PP can only do little to save an otherwise-great photo. I was ...
5
votes
2answers
7k views

Which noise reduction software has the best results? [duplicate]

Have you tried different software, compared the results and reached a conclusion? I only used Nikon's DFine and Lightroom's noise reduction tool and found the results very similar. Lightroom's has ...
0
votes
0answers
60 views

Different sources of noise and ways to avoid/correct those [duplicate]

Possible Duplicate: What types of noise can be present in digital photographs? I've few questions related to noise found in digital images. There are topics on this forum on underexposure ...
3
votes
4answers
1k views

How can I keep my camera cool on a budget?

Is there a way to cool the camera without buying a new hardware? How do you determine that the camera is NOT cool ATM? What temperature can be considered hot for the camera sensor? Does cooling really ...
1
vote
1answer
2k views

Should I use in-camera noise reduction, or is it better to leave that for desktop-based post-production? [duplicate]

Possible Duplicate: Is in-camera high-ISO noise reduction worthwhile? Should this be done using image processing software like Photoshop or the built in function of the camera ? It seems a ...
4
votes
3answers
656 views

Why is dark-frame subtraction on my Pentax camera shorter than the exposure time?

When my Pentax K-r applies long exposure noise reduction (dark-frame subtraction), the processing time required for this operation is less than the exposure time. For example, my camera may perform ...
25
votes
2answers
2k views

What is noise in a digital photograph?

What kinds of effects are present in digital images that are referred to as "noise"? What are the different sources of noise? What causes each type of noise? What are the characteristics of the ...
4
votes
1answer
799 views

What do the different noise reduction options in Silkypix mean?

I'm playing around with RAW files in Silkypix that came with my Panasonic camera and I am thoroughly confused by the sliders for the noise reduction and the Silkypix manual isn't of much help (at ...
12
votes
1answer
413 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
2k 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 ...
20
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 ...
23
votes
5answers
1k 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 ...
4
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 blur,...
13
votes
3answers
6k 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 "...
12
votes
5answers
7k 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 ...
23
votes
8answers
3k 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 ...