Archived posting to the Leica Users Group, 2004/10/17

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Subject: [Leica] Is ASA 200 the new 100 ?
From: Frank.Dernie at btinternet.com (Frank Dernie)
Date: Sun Oct 17 01:43:31 2004
References: <20041017012141.32683.qmail@web50504.mail.yahoo.com>

Hi Emanuel,
I find 200asa on my digi SLR to be comparable grain/noise wise to 
Kodachrome 64. IME it id MUCH better than the 200asa print films I have 
used, the difference is not small.
The noise level on the tiny sensored p&s digicams I have used is 
unacceptable to me unless at the slowest, 50asa, speed.
Frank

On 17 Oct, 2004, at 02:21, Emanuel Lowi wrote:

> This question is related to the issues which result
> from the digital crop factor reality (which I keep
> getting mixed up with crap factories and crop circles,
> but I digress)..
>
> I ask it in utter ignorance of digital technology.
>
> Are the ASA settings on today's digital cameras really
> equivalent quality-wise to their numerical equivalents
> in film?
>
> For example, ASA 100 film is the usual daylight speed
> for me in my normal shooting conditions. I'll load a
> slower film (ASA 50, 25) when conditions allow and a
> faster film (200, 400) when conditions demand.
> Otherwise it's all ASA 100 all the time, because this
> gives me the quality I need while allowing me my
> preferred shutter speeds and apertures.
>
> Would ASA 100 still be my  "normal" setting with
> today's digital technology? Or can ASA 200 be used
> without worry and with quality equivalent  to what I
> am used to, due to a kind of sensitivity setting
> inflation ?
>
> (Please, spare me the Clinton-esque debates over what
> I mean by "normal" and "quality."  If you can't
> proceed to an answer without getting all tangled up in
> semantics, please don't bother).
>
> See, if a digital M has a crop factor, we've only got
> the 28/2 and Cosina 28/1.9 as fast-ish wide-ish
> lenses. Anything wider is f2.8 or slower and I cannot
> see how Leica or Zeiss or Cosina will deliver a
> quality 21/2 or 24/2 (never mind f1.4) that won't
> obstruct our viewfinders.
>
> But if digital ASA 200 is just as good as the "old"
> film ASA 100,  there's less of a problem with the
> slower wides and the crop factor.
>
> Be nice to me if I've asked a ridiculously stupid
> question.
>
> Emanuel Lowi
> Montreal
>
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Replies: Reply from locke at straylight.ca (Greg Locke) ([Leica] Is ASA 200 the new 100 ?)
In reply to: Message from lowiemanuel at yahoo.ca (Emanuel Lowi) ([Leica] Is ASA 200 the new 100 ?)