Archived posting to the Leica Users Group, 2005/01/02

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Subject: [Leica] Intro, now a discussion of MTF
From: dorysrus at mindspring.com (Don Dory)
Date: Sun Jan 2 07:09:25 2005

Doug,
Thank you, I haven't had that experience with brand L, C, and N
telephoto's but obviously there are clunkers out there.

Don
Dorysrus/2mindspring.com

-----Original Message-----
From: lug-bounces+dorysrus=mindspring.com@leica-users.org
[mailto:lug-bounces+dorysrus=mindspring.com@leica-users.org] On Behalf
Of Doug Herr
Sent: Sunday, January 02, 2005 9:50 AM
To: Leica Users Group
Subject: Re: [Leica] Intro, now a discussion of MTF

on 1/2/05 6:37 AM, Don Dory at dorysrus@mindspring.com wrote:

> with a telephoto lens, bokeh becomes largely irrelevant.

Absolutely not so!  IMHO it's MORE important because more of the picture
area will be out of focus.

Examples: I've seen photos made with a 500mm+ refractive lens from a
well-known manufacturer (starts with P) that looked like it was made
with a
mirror lens: ugly donut-shaped highlights except toward the edges where
they
were creschent moon highlights.  Likewise a brand-C 100-400 zoom gives
similar results.  The 280mm f/4 APO-Telyt and the older 560mm f/5.6 and
280mm f/4.8 Telyts give very pleasing bokeh.  For the kind of photos I
like
to make it's a very important property and MTF curves don't tell me
anything
about it.

Doug Herr
Birdman of Sacramento
http://www.wildlightphoto.com


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In reply to: Message from telyt at earthlink.net (Doug Herr) ([Leica] Intro, now a discussion of MTF)