400mm lens comparo WAS RE: bait

Barry:
Canon's autofocusing EF 400mm f/4 DO IS has no detectable chromatic aberration (diffractive optics work very well) and focuses down to 11 feet *without extension tubes*. Images with it at any aperture between f/4 and f/16 are better (sharper, higher contrast) than those with the 400mm f/6.8 Telyt-V at f/6.8 or f/8.

The Canon lens weighs the same or a little less and is eight inches shorter than the Telyt. Of course the Canon lens also cost almost ten times as much as the used Telyt. With my eyesight the Canon lens' autofocus helps a lot.

I use the 400mm f/6.8 as a backup on those extremely rare occasions when the EF 400mm f/4 is in the shop. Photo tour leader Doug Cheeseman told a story about having a client fall on his EF 400mm f/4 at the start of an Antarctic cruise and not being able to use it for the entire 2-3 weeks so I always make sure I have the Telyt backup when I'm far away from the repair shop!

Shot with EF400mm f/4 DO IS:
http://www.mountain-and-desert.com/Wildlife/Birds/Long-Legged/Snowy%20Egret/DBW-SE0122.htm

Shot with 400mm f/6.8 Telyt:
http://www.mountain-and-desert.com/Wildlife/Birds/Long-Legged/Snowy%20Egret/DBW-SE0551.htm




At 08:32 PM 6/28/2004, you wrote: 
Thanx Mark and I was refering to you as you've mentioned it before, sorry I
didn't use your full name. I probably poorly phrased the question. What I
meant is how does the image quality in your view, of the 10D with your Leica
Lens, compare to the quality of the !0D with the Canon lens. Do you notice
any difference?

Thanx
Barry

-----Original Message-----
From: leica-bounce@xxxxxxxxxxxxx [mailto:leica-bounce@xxxxxxxxxxxxx]On
Behalf Of Mark Bohrer
Sent: Monday, June 28, 2004 7:47 PM
To: leica@xxxxxxxxxxxxx
Subject: RE: bait


Barry:
Don't know if you meant me. I occasionally use the 400mm f/6.8 Telyt-V on
an EOS 10D. I get much better images from the 10D compared to a Visoflex
III on a motorized M7. The cable-released Visoflex's 'shutter-lag' makes it
unusable for fast subjects.


At 07:18 PM 6/28/2004, you wrote:
>I'm kinda curious, besides Mark, is anyone using R lenses on the 10D or
>other Canon and seeing any difference in the results?
>Cheers
>Barry Fisher
>

Mark Bohrer
www.mountain-and-desert.com
Adventure travel and wildlife photography 


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