30D: 'Cleanest' ISO?

[eos 10 fan]

I am wondering if there is ISO setting on the 30D that is 'cleaner' than the

rest - does 100 ISO have less noise than 200 ISO or 400 ISO? or is there one of

the 1/3 ISO settings (ie: 160) that produces the least noise?

 

Thanks

[bobatkins]

100

[kimberlynoelphotography]

If I can add to Dan's question. How do you feel the 30D does at 800 ISO for say party pictures in a dark hall? Dan, ISO 100 is going to absolutely give you the cleanest picture. The 30D does a great job.

[m_barbu1]

It's performance at ISO 800 is the best I've seen in a digital SLR. You might consider also processing the image with <a href="http://www.picturecode.com/">Noise Ninja</a>, though. When doing so, be sure to process a TIF created from the RAW source file, and not a JPG. Though processing a JPG is possible, you don't want to do that if your goal is a clean image.

[eos 10 fan]

Thanks for the responses folks.

 

The reason I asked is that I remember reading one of Chuck Westfall's posts on RG that said one (or more) of the 1 series bodies had the cleanest images fron 200 ISO. Sadly the RG forums were sold and are now only available with a paid subscription from prophotohome.com - so all of CW's 2000+ are not gone, but not readily readable either; a knowledge base lost.

[jon_austin]

"When [processing your image with Noise Ninja], be sure to process a TIF created from the RAW source file, and not a JPG. Though processing a JPG is possible, you don't want to do that if your goal is a clean image."

 

I only shoot in JPEG, and have run dozens of ISO 800 and 1600 Large/Fine JPEGs through Noise Ninja, and the results are excellent. Can you explain why you propose that clean JPEGs are not possible from NN?

[m_barbu1]

<a href="http://graphicssoft.about.com/od/formatsjpeg/a/jpegmythsfacts.htm">JPEGs lose quality every time they are opened, edited and saved.</a>