Re: [APML] Nikon 24mm (Was Piggy Back Lenses for F2)

["Bobby Middleton" <bobm@koyote.com>]

Nice illustration. Do you have an index to other lens tests?
Bobby Middleton
 
----- Original Message ----- 
From: Joe Pedit <jpedit@sph.unc.edu>
To: <astro-photo@seds.org>
Sent: Saturday, January 22, 2000 2:59 PM
Subject: Re: [APML] Nikon 24mm (Was Piggy Back Lenses for F2)


> Jon and Bobby,
> 
> The Nikon 24mm lens test can be found at:
> http://cmr.sph.unc.edu/~joe/28mm.jpg
> Not only are the corner stars seagull shaped, but there is also quite a
> bit of chromatic aberration for such a short focal length lens.
> 
> Joe
> 
> 
> "Kolb, Jon" wrote:
> > 
> > Joe,
> > 
> > I'd be interested in seeing the results.
> > 
> > Sincerely,
> > Jon Kolb
> 
> 
> Bobby Middleton wrote:
> > 
> > I wonder if the manual focus does any better?
> > Bobby Middleton
> 
> 
> From: Joe Pedit 
> > 
> > I recently purchased the Nikon AF 24mm f/2.8D and tested it last Friday
> > night while I waited for the quarter moon to set.  I took three
> > exposures at:
> > f/2.8 for 4 minutes
> > f/4.0 for 8 minutes
> > f/5.6 for 16 minutes
> > I just got the processed film back today and examined the prints.  The
> > f/2.8 and f/4.0 prints has seagull-shaped stars in the corners.  The
> > corner stars are nearly perfect at f5.6.  I can post samples this
> > weekend if you are interested in seeing the results.
> > I ran similar tests for the Nikon AF 50 mm f/1.8 and the Nikon 105mm
> 
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