Re: [APML]: Bobby's M31

["Bobby Middleton" <bobbym@webwide.net>]

Philip, there is an internet buy-sell newsgroup called
rec.photo.marketplace.
You might consider posting on it.
Bobby Middleton


----------
> From: Philip Perkins <philip@astrocruise.com>
> To: astro-photo@nightsky.com
> Subject: Re: [APML]: Bobby's M31
> Date: Monday, January 26, 1998 12:51 PM
> 
> 
> Wil,
> 
> > I've had similarly excellent results with the Tamron 400mm f/4. For an
example
> > of a full-frame shot taken with the 400 f/4, see my shot of the M42 &
Horsehead
> > region (see URL below). That shot is just about a full-frame shot,
cropped only
> > slightly along the long edge. I've been very pleased with the images
from this
> > lens, which I always shoot wide open. The URL is:
> > 
> >
http://www.psn.net/~airdigital/Horsehead_and_M42_Tamron_400mm_f4_PJM_40min_2
6_Oct_1997_Table_mesa.JPG
> 
> Thanks very much for your help. I have looked at this image and I agree
> that the lens quality looks excellent - it's also a fine photo!  Would
you
> by any chance have a larger format version of the image that you could
send
> privately?
> 
> > The Tamron 400 f/4 is indeed hard to find. It's now discontinued, and
it never
> > sold in great numbers. A Tamron rep told me it wasn't a big seller for
two
> > primary reasons: its high price (well over US$2000), and that most
photographers
> > went for the faster (but less sharp) 300 f/2.8. According to the rep
many 300
> > f/2.8 buyers figure to use a 1.4x teleconverter to cover 400mm, but
that
> > combination is *not* as sharp as the "native" 400mm f/4.
> 
> I think I will try a 'Wanted' advertisement for this lens in the local AP
> magazine. I agree with your comments about the 300 f/2.8 - it's not as
> sharp as I would like, especially around the perimeter of the frame. I've
> also tried adding the 1.4x teleconverter, and the image quality suffers
> noticeably with astigmatism which is visible as I rack it thru focus.
> 
> Regards,
> --Philip
> 
> Philip Perkins  --  philip@astrocruise.com
> 51 27'N 1 36'W  --  Wiltshire, UK
> 43 54'N 5 32'E  --  Luberon, France
> Astrocruise     --  http://www.astrocruise.com