Archived posting to the Leica Users Group, 2001/05/28

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Subject: [Leica] Re: 21mm Elmarit ASPH vs. non-ASPH
From: Christer Almqvist <christer@almqvist.net>
Date: Mon, 28 May 2001 10:03:59 +0200
References: <E65052A28282D4119D9100508BE3286C0175F387@emss07m07.lmtas.lmco.com> <009801c0e6f1$0fa2acc0$56eda918@twmi.rr.com>

>Mose, J P <j.p.mose@lmco.com> wrote:
>
>>  I'm having trouble with the "search" feature on my computer so
>>  please excuse my question if it is redundant. I would like to
>>  purchase a 21mm for my M6. I'd like to hear your opinions on
>>  the ASPH versus the previous version. I am finicky like many
>>  Leica users but also trying to be practical ($$$). Most of my
>>  shots are: Tech Pan or TMAX 100; enlargements 11X14 or
>>  under; very few at f/2.8. Would I see a big difference?
>
>At 11x14" and under at apertures smaller than f/2.8...no, you won't see a
>big difference. The performance gains in the ASPH version are incremental
>rather than revolutionary. OTOH the gains are real and if you must have the
>sharpest lens then save your pennies and spring for the ASPH version when
>your cookie jar is full.

Well, if he uses Tech Pan and TMX,  and perhaps even a tripod?, then 
I think he will see differences also at 4.0  - at least. Not only in 
sharpness, but also in the rendering of fine structures.

Depending on how you use the lens, you may want to consider the size 
difference betwen the ASPH and the previous version. The difference 
is not all that big in millimeter (I  do not say inches, because that 
would be small fractions) but when it comes to putting an M with the 
lens attached in your jacket pocket you certainly notice it. This is 
important to me, but I use the 21 mm a lot for everyday photography. 
If you have other lenses, and you use b+w, you may make your choice 
dependent on the filter size  and get the lens that can use filters 
you already have.

Generally, I would say it is six of one and half a dozen of the other 
- ---but as you are a Tech Pan man, look out for special offers on a 
new ASPH rather than getting a used earlier version.

(BTW how do you expose and develop your TP?)

>
>My personal favorite among the Leitz/Leica 21mm lenses is the f/3.4 Super
>Angulon. It comes closest in look & feel to the Zeiss f/4.5 Biogon (one of
>my all-time favorite lenses, period). I used an SA extensively in the Middle
>East in the mid-1980s, courtesy of a Kibbutznik/Leica fanatic who took me
>under his wing after spotting the M2 hanging off my shoulder as I pruned
>rose bushes in the village's greenhouse. :-)
>
>-Dave-

- -- 
Christer Almqvist
D-20255 Hamburg, Germany and/or
F-50590 Regnéville-sur-Mer, France

Replies: Reply from Mark Rabiner <mark@rabiner.cncoffice.com> (Re: [Leica] Re: 21mm Elmarit ASPH vs. non-ASPH)
In reply to: Message from "Mose, J P" <j.p.mose@lmco.com> (FW: [Leica] Leica Users digest V20 #29)
Message from "David Kieltyka" <daverk@msn.com> ([Leica] Re: 21mm Elmarit ASPH vs. non-ASPH)