Archived posting to the Leica Users Group, 2010/09/24

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Subject: [Leica] DR contrast
From: hopsternew at gmail.com (Geoff Hopkinson)
Date: Fri, 24 Sep 2010 17:13:27 +1000
References: <018901cb5b56$907c4750$b174d5f0$@rr.com> <AANLkTiky90-v61YNe_Ned4M9p3bNUgzk4T9x=ZwLBtGV@mail.gmail.com>
 
Calculated, according to Herr Karbe. I'l take his word on accuracy though.
He seems to know what he is doing ;-)

Cheers
Geoff
http://www.pbase.com/hoppyman


On 24 September 2010 09:59, Marty Deveney <benedenia at gmail.com> wrote:

> Are Leica's MTFs measured like Zeiss published or calculated, like
> almost every other manufacturer.  The latter is a good way to
> introduce a lot of bias into your data.
>
> Just interested.
>
> Note that the 50/1.4 ASPH is not limited by spherical aberrations and
> has much higher contrast and resolution than the DR at f2.
>
> Marty
>
>
In reply to: Message from sethrosner at nycap.rr.com (Seth Rosner) ([Leica] DR contrast)
Message from benedenia at gmail.com (Marty Deveney) ([Leica] DR contrast)