Archived posting to the Leica Users Group, 2007/08/06

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Subject: [Leica] PAW 31 AND A QUESTION.
From: mark at rabinergroup.com (Mark Rabiner)
Date: Mon Aug 6 14:26:14 2007

>> Why must they reduce the zoom apertures in some lenses and not
>> others.
> 
> Variable-aperture zooms are less expensive to design and build.  Or, maybe
> that should be "cheaper" instead of "less expensive".
> 
> Doug Herr
> Birdman of Sacramento
> http://www.wildlightphoto.com


But there's a misconception that they perform less well and are considered I
know "less professional".
But it just ain't so.
I use em all the time.


Its far easier to design a lens which balances better on a camera with a
variable aperture. And a lens with nicer image producing specs.
So I like em.
And am not fond of having Yuban coffee cans filled with rocks on the front
my my compact bodies.

For instance the 12-24 f4 lens I use is fixed aperture lens.
So I can hold my head up higher when I use it.
But I don't I don't care a bit about it.
If it varied I'd say "terrific" it would probably be smaller than it is.
It was probably for some reason mathematically real easy for them to have
made it an f4 lens so they just went ahead with it from a marketing
perspective thought it would sell to a few more pros.

Though its nice to in aperture mode which I use mainly now to set in at F4
and be there and not have to think about it.


Mark William Rabiner
Harlem, NY

rabinergroup.com



In reply to: Message from telyt at earthlink.net (telyt@earthlink.net) ([Leica] PAW 31 AND A QUESTION.)