Re: [APML] CANON LENSES FOR ASTROPHOTOGRAPHY

[Jerry Lodriguss <jerry@astropix.com>]

Hi Michael,

This is exactly the opposite of my experience with Canon and Nikon.  I have 
used the Canon "L" lenses and other non-"L" lenses, and I would trade my 
Nikon lenses, including the ED glass, for the Canons in a heartbeat.

Jerry

At 11:36 AM 8/10/2003 -0700, you wrote:
>I have used the Tamron f/2.8 macro lens for astrophotography and it is 
>very good.  I was primarily a user of Canon products for general 
>photography and liked them very much.  However, for astrophotography I 
>think in general they are inferior to Nikon especially regarding chromatic 
>aberration.  I used the Canon 300 mm "L" lens and was quite 
>disappointed.  Perhaps, this was only one of their "duds" and their other 
>lenses might be better.
>
>
>Michael Stecker
><mailto:mstecker@dslextreme.com>mstecker@dslextreme.com
>
>My Web Site:
><http://www.homestead.com/mstecker/index.html>http://www.homestead.com/mste 
>cker/index.html (INDEX)
><http://www.homestead.com/mstecker/astrogallery.html>http://www.homestead.c 
>om/mstecker/astrogallery.html (Astroimage Index) 
><http://www.homestead.com/mstecker/placesindex.html>http://www.homestead.co 
>m/mstecker/placesindex.html (Places Index)
>
>
>
>>----- Original Message -----
>>From: <mailto:derekb@sympatico.ca>DEREK BAKER
>>To: <mailto:astro-photo@seds.org>astro-photo@seds.org
>>Sent: Saturday, August 09, 2003 8:47 PM
>>Subject: [APML] CANON LENSES FOR ASTROPHOTOGRAPHY
>>
>>I have a Canon EOS 10D that accepts Canon's EF lenses. I presently own a 
>>24mm to 85mm f/3.5 zoom which is handy but does not deliver tight star 
>>images free of colour error/other distortions unless stopped down to 
>>f/5.6 (!!!!!). I recently purchased a Canon 200 USM fixed focal length 
>>telephoto which is very sharp, especially when stopped down to f/4. It 
>>provides a great field of view for properly framing many nebulae.
>>
>>It seems that all manufacturers have 'duds' in their product lineup, and 
>>excellent lenses too. I have consulted some sites 
>>(<http://www.photodo.com>www.photodo.com etc...) but
>>I need to hear from anyone has tried the Canon 100mm f/2.8 Macro for 
>>astrophotography, or the Tamron 90mm f/2.8 macro.
>>
>>Also..
>>
>>Which wide angle lenses deliver sharp stars free of signifcant field 
>>curvature, distortion, colour error and the like.
>>
>>Any duds to avoid?
>>
>>Finally..
>>
>>Any other lenses you could recommend for nature/astrophotography?
>>
>>Thanks!
>>
>>Derek S. Baker
>><mailto:derekb@sympatico.ca>derekb@sympatico.ca
>>
>>
>>
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