Is this normal? High noise in 30D

M2One wrote in post #2332969
Well i mean by those square marks you see on the right hand of photo and the roof. i can see the paremeter marks which makes it look like noise.

The photo definitley has noise if you look in the shadowy areas.

Like I said though, I believe (i'm no expert though) this is from underexposed areas. Any shot underexposed be a victim to noise regardless of ISO. As I suggested, take a photo of something simpler that you can get exposed correctly.

The photo was taken at f8.0 according to the exif info. That should be fine.

Lower f#, f2.8 f3.5 ect. It's early meant to type larger aperture not large.

Here's another shot:

Looks like an exposure problem not camera. remember photography in painting with light if the is not enough light the painting will be less than perfect.

I think your 30D is fine. But it is recommended NOT to use the ISO steps in between the "true" steps. Use 100, 200, 400, 800 etc.

celter wrote in post #2333456
I think your 30D is fine. But it is recommended NOT to use the ISO steps in between the "true" steps. Use 100, 200, 400, 800 etc.

Damn, I can't find the reference but there was a great article floating around that completely disagrees with this and showed best noise signature actually at 160, 320 etc.... wish I could find the link!

M2One wrote in post #2333007
Here's another shot:

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f/4 ISO:100 1/3200. RAW - unprocessed.

Can you post a link to the raw file? It looks like the camera exposed for something very bright and under exposed the subject. I'd really like to see the raw file if I could.

By the exposure settings attached to this last image I must agree that it is definitely an underexposure issue. In average daylight conditions a face in shadow should be giving you a shutter speed of about 1/500 sec or less. When you say unprocessed RAW do you mean you checked all sliders in the RAW Converter to make sure they were set to zero. Be sure when you convert your RAW files that the converter is not using Auto exposure to balance the light in the shadow areas.

EOSAddict wrote in post #2333480
there was a great article floating around that completely disagrees with this and showed best noise signature actually at 160, 320 etc

You're quite right - 160 was considered to be the optimum setting.

I can't find the thread either!

John T wrote in post #2333696
You're quite right - 160 was considered to be the optimum setting.

I can't find the thread either!

Same here, but I can vouch I did see the thread .

JaGWiRE wrote in post #2333984
Same here, but I can vouch I did see the thread .

Maybe this thread: http://forums.dpreview​.com …19&thread=19721​647&page=1

That's it, thanks!

M2One wrote in post #2332989
here's a cropped version. you can see those pixelated squares.

Thats not noise, this is noise!
Check out this 100% crop of my 30 second dark frame exposure at f3.5 iso100.

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If you underexpose and then in processing bring up the brightness, you will get noise coming out of the shadow areas. At low ISO's if the shot is well exposed and requires little to no brightness in processing, you really shouldn't see any noise.

I thought my 30D was noisy too, then I thought it might be the IS lens on some shots. It seems to be much more sensitive to bad exposure than my 300D and when exposed properly I don't get much of a problem.

celter wrote in post #2334859
Maybe this thread: http://forums.dpreview​.com …19&thread=19721​647&page=1

Thanks for posting that. I used ISO 1000 one time and couldn't believe how bad it was and as a result never went above 800.