Re: [APML] SIGMA APO

["Franklin A. Holub" <lists@my-spot.com>]

Vicent,

Its not the lens you are looking at but it is a Sigma. I have a Sigma EX
100-300 APO f/4 lens that I am very happy with. This link is a full
resolution (2820dpi) crop of the extreme corner of a 20 minute exposure at
f/4.5...

http://www.my-spot.com/images/100300SigmaAPO.jpg

The region shown is just south west of M4...

A size reduced full frame is here...

 http://www.my-spot.com/images/100300SigmaAPOuc.jpg

Hope this helps.

Frank
http://www.my-spot.com/astronomy.htm


----- Original Message ----- 
From: "Vicent Peris" <vicentperis@ya.com>
To: <astro-photo@seds.org>
Sent: Saturday, July 12, 2003 4:17 AM
Subject: [APML] SIGMA APO


> Hi all,
>
> anybody has used a Sigma 180 mm. f/2.8 APO lens?
> I have the chance to buy one, but I need references
> on using this (or another Sigma lenses) for
> Astrophotography.
>
> Thanks you!
> Vicent.
>
> _______________________________________________
> Astro-Photo mailing list
> Astro-Photo@seds.org
> http://seds.org/mailman/listinfo/astro-photo


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