Did Canon ever officially respond to the ISO 160 multiples hearsay?

AFAIK, the 160x ISO values are a digital pull from the native 200x ISO values, and this means they have a little bit less noise, but also a tad less DR. I think Canon never spoke out about this, but I believe a1ex (Magic Lantern developer) would aggree with me on this one.
 
JaredSMark said:
I'm a point and shoot kind of guy and don't waste too much time debating the tech specs of a camera, but I'm wondering if the thing about select Canon cameras (I have a 60D) having a 'digital push' ISO at settings other than multiples of 160 is true or not. There's some pretty good info going against it at http://shootintheshot.joshsilfen.com/2010/05/13/canon-hd-dslr-native-iso/

But I'm still not sure who to believe on this.
Click to expand...

What do you mean who to believe? Everyone agrees with that article pretty much. Except in videomode DR will not be altered the same way as in raw-stills as the camera can and does pull down the highlights with intermediate ISOs for the 8-bit h.264 files.
 
well, many people say "160x are the native ISOs", where the correct statement would be "160x are the ISOs that show the least noise"
 
Its a pretty simple test to run to see for yourself, thus not having to believe anyone. I only shoot on 160 and its multiples on my 7d... unless I am forced not to.
 
If you have a scene that requires the most DR possible (windows, bright sunny day, etc.) then shoot at multiple of 100 (100, 200, 400, 800). If you require less noise than shoot at 160's. I generally stick to 100's unless I'm pushing the high ISOs at which point I switch to 1250ISO, 2500 if I really need it (at a wedding on a 5D). A 60D I wouldn't go above 1250.
 
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