Archived posting to the Leica Users Group, 1999/02/15

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Subject: Re: [Leica] Is ASPH worth it (was:Do not like 75mm framelines)
From: Alan Ball <AlanBall@csi.com>
Date: Tue, 16 Feb 1999 08:22:38 +0100

Nathan and Joe,

i have not conducted any tests: I outsource my testing to the
specialised mags and to our own LUG guru. But I also did start with the
'classic' 35mm Summicron, before upgrading to the ASPH version. And
there is a difference in the average quality of my slides. Since I
generally use Velvia, I'm very often condemned at using full aperture in
handheld photography. My guess is that most Leica M shooters WANT
maximum performances wide open.

The 35mm f2 ASPH gives me total confidence in those circumstances. I get
perfectly crisp slides, seemingly immune to flare, and with hardly any
progress in visible contrast/definition between f2 and the smaller
apertures.

The non-ASPH version was very nice to use (more compact than the ASPH)
but asked to be stepped down a little for Leicaesque performance. Which
made it less universal for my photography, and less worthy of the total
investment.

I do not measure those differences, but I am able to recognize them on
the light table. The 35mm f2 ASPH is the ultimate 'standard' lens for a
M6. But the f1.4 asph version sure is tempting as well ;-)

Alan

Nathan Wajsman wrote:
> 
> Joe,
> 
> > I'm not trying to be controversial; I have really been wondering about
> > whether the newer lenses have anything to offer me that would make a
> > difference to my pictures, fast film handheld. Seeking enlightenment.
> 
> I upgraded my 35mm Summicron from the 70s to the latest ASPH version
> this fall. Before doing it, I had the opportunity to borrow one and to run
> some of my own tests. My conclusion was that at f2 there was a visible
> difference in the slides, and a smaller but still visible difference at f2.8.
> From
> f4 on, there was no difference that I could see on the light table. These
> tests
> were of course done on a tripod, Fuji Velvia, close-ups of a statue. Maybe
> they are not relevant to handheld shooting, but I did upgrade nonetheless;
> I shoot at maximum aperture quite often and was willing to pay to squeeze
> this little extra quality. If you always shoot at f5.6 or smaller apertures,
> then
> you will be wasting your money.
> 
> Nathan
> 
> --
> Nathan Wajsman
> Overijse, Belgium
> Photo page: http://members.tripod.com/belgiangator