RE: [APML] CANON LENSES FOR ASTROPHOTOGRAPHY

["Gene Horr" <genehorr@houston.rr.com>]

My experience matches Jerry.  The "L" flourites are the best photographic
lenses that I have
used.  But many of the recent non-"L" (consumer) that I have used are pretty
bad.  Canon
seems to have strongly differentiated their lines - building the best
available products for
their pro line (at what seems to be the highest cost) but building pretty
shabby items for
their low price consumer products.

Gene Horr
genehorr@houston.rr.com


-----Original Message-----
From: astro-photo-bounces@seds.org [mailto:astro-photo-bounces@seds.org]On
Behalf Of DEREK BAKER
Sent: Saturday, August 09, 2003 10:48 PM
To: astro-photo@seds.org
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 (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
derekb@sympatico.ca

_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo