Re: [APML] Pentax normal lens for astro-photography

[Michael Greger <mgreger@dashmail.net>]

Jay,

I can't give a comparison either, but I will second Matt's assertion that the
105mm f/2.4 works very well.  Stop it down to f/4.0 and the entire field is
nice and sharp.  On advice of group members, I have also used the 200mm f/4.0
(at f/5.6) and the 55mm f/4 (at f/5.6).  Both lenses work very well.  OK, the
55mm is not quite as good as the others, but it works well for a wide lens...

All three of these lenses rival a lot of my Nikon gear.  I have some
incredibly sharp daytime images from the 105mm and 200mm.

Mike

"Jay E. Potts" wrote:

> I am going to add a "Normal" Pentax 67 Lens to my astro-photo arsenal.
>
> Can someone offer an opinion of how the 105mm F2.4 and 90mm F2.8 lenses
> compare optically? Are they about equal, or does one of these lenses stand
> out a superior?
>
> Thanks,
> Jay E. Potts
> http://www.whirlpoolgalaxy.com - Astrophotography
> http://www.americanfocus.com - Fine Art Landscape and Wildlife Photography
>
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Michael J Greger                   Intel Corporation
mgreger@dashmail.net               Intel Server Chipset Design Engineer
http://www.geocities.com/mjgreger0 These are my opinions, not those of Intel!
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