Archived posting to the Leica Users Group, 2008/03/17

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Subject: [Leica] Questions about the visoflex III
From: luisripoll at telefonica.net (Luis Ripoll)
Date: Mon Mar 17 17:53:08 2008
References: <BLU123-DAV71DD357D828F3A82A09A6C8050@phx.gbl> <B93C622C-472E-4F44-997F-B83D876D9904@shaw.ca>

John, 

I'm affraid to think that I can do such experiments!, I'm not able for this,
I'm a simply user,

Thanks for the interesting information
Saludos cordiales
Luis
 

-----Mensaje original-----
De: lug-bounces+luisripoll=telefonica.net@leica-users.org
[mailto:lug-bounces+luisripoll=telefonica.net@leica-users.org] En nombre de
John Collier
Enviado el: martes, 18 de marzo de 2008 1:18
Para: Leica Users Group
Asunto: Re: [Leica] Questions about the visoflex III

I have a friend who adapted his black 65 mm Elmars to a Nikon tilt/ shift
bellows. Apparently the image circle is not that big and you can't shift or
tilt very much at all. He also had a hell of a time with paint flecks from
the diaphragm blades and has learned to quickly field strip and clean the
lens.

John

On 17-Mar-08, at 6:22 PM, ferrel anderson wrote:

> I regard to the two versions of the 65 mm Elmar lenses, I offer the 
> following comments.  The earlier chrome version is a low contrast
> lens that achieves excellent resolution of 80 lpm at only f8.   
> Color pictures show a pastel rendition, that can be wonderful if that 
> is what you want.  The black version is a high contrast lens of much 
> higher resolution.  These comments are based on actual picture results 
> with B&W and color slide films.  The resolution results were on B&W 
> film taken of resolution test targets at the conventional 26 focal 
> length distance.  Neither lens achieved excellent resolution at the 
> edges, but at macro distances where the center of the lens is used to 
> project the picture results, the resolution is excellent across the 
> field.  In comparison shots taken at the reproduction ratio of 1:5 
> with the 60 mm Macro Elmarit R and the 100 mm APO macro Elmarit R 
> lenses with Kodachrome, the results were indistinguishable.  When I 
> work with the Bellows R, the two lenses that I use without hesitation 
> are the black 65 mm Elmar and 100 mm Macro Elmar.  If I want to use 
> macro lenses as universal lenses, I choose the 60 mm Macro Elmarit R 
> and 100 mm APO Macro Elmarit R lenses.  They are both superb, from the 
> center to the corner of the picture and at all distances.
>
> I should add, that in resolution tests taken with the much Lamented 
> Kodak Technical Pan film, the 60 and 100 mm R lenses run circles 
> around the other lenses discussed above.  The great leveler though are 
> the films that are most commonly used where maximum resolution is from 
> 80 to 100 lines per millimeter.  All of these lenses, except the 
> chrome 65 mm Elmar, at optimum aperture out-resolve these films.

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In reply to: Message from andersonfe at msn.com (ferrel anderson) ([Leica] Questions about the visoflex III)
Message from jbcollier at shaw.ca (John Collier) ([Leica] Questions about the visoflex III)