noise profiles at different image sizes?

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lumpynose
Posts: 1
Joined: Thu Feb 12, 2004 5:11 pm

noise profiles at different image sizes?

Post by lumpynose »

Has anyone tested making noise profiles at the different image sizes that the camera produces? It seems to me that when you're using a smaller image size that the camera could produce images with less noise than the full or normal size images.
Leif G.
Posts: 1
Joined: Fri Mar 12, 2004 4:35 am
Location: Sweden

Smaller size/less noise?

Post by Leif G. »

A late answer to the question.
When you take a picture the camera first always stores a RAW file. If you have set the camera to a smaller size, say JPEG 640x480, it simply downsamples and compresses the image to that size, and it appears to have(and has) less visible noise.
It the same as when you view a big picture on your monitor.
When you downsize it, the noise becomes less visible.

Leif G.
NITeam
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Joined: Sat Feb 01, 2003 4:43 pm
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Post by NITeam »

lumpynose,

The user guide lists the image size as one of the factors affecting noise properties and recommended for taking into account during profiling.

Vlad
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