now: Stealth M8 mode (Re: [Leica] three days with M8)

[henningw at archiphoto.com (Henning Wulff)]

At 5:22 PM -0600 1/23/07, Lottermoser George wrote:
>On Jan 23, 2007, at 5:05 PM, Henning Wulff wrote:
>>The 20D only has full stop increments,
>
>oops - obviously been in the bag to long.
>
>>and the 5D for most of us as well. The intermediate stops on the 5D 
>>actually produce more noise than the next up full stop, so there is 
>>rarely any reason to use the intermediate stops.
>
>I haven't noticed this effect. I also haven't tested extensively in 
>this regard (I certainly will now). My anecdotal experience has been 
>rather the other - that when I need high speed but not "full" speed 
>- that the increments have yielded less noise as I move to lower 
>ISO's - I'll have to do some hard testing on this.

I haven't done the full suite of tests myself either, but I've seen 
the tests that other people have done, and some have done a very 
thorough job, including graphing the resulting noise profiles. It 
seems fairly conclusive. Thereafter I did a quick test, and sure 
enough, the noise went up from 800 to 1000, but thereafter seemed to 
stay the same at 1250 and 1600. Since then I haven't used 
intermediates much.

-- 
    *            Henning J. Wulff
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