Strange "Asahi NC Takumar 3,3/300mm Pentax M42" on Ebay
pdml at web-options.com
Sat Jul 3 14:22:21 EDT 2010
> How many stops is 256x?
> On Sat, Jul 3, 2010 at 12:57 PM, Brendan MacRae
> <brendanmacrae1969 at yahoo.com> wrote:
> > ----- Original Message ----
> >> From: Anthony Farr <farranthony at gmail.com>
> >> To: Pentax-Discuss Mail List <pdml at pdml.net>
> >> Sent: Sat, July 3, 2010 3:58:31 AM
> >> Subject: Re: Strange "Asahi NC Takumar 3,3/300mm Pentax M42" on Ebay
> >> "The mounting the tube seems also an original."
> > Are you sure about
> >> that? Compare the pictures at
> >> AOHC:
> > http://www.aohc.it/cameras/nocta.jpg
> > and,
> > http://www.aohc.it/images/sp40.jpg
> > to
> >> the picture at the
> >> auction:
> > You
> >> can see that the historic pictures show a much shorter tube
> > between the wide
> >> part of the lens and the body of the image
> > intensifier, with no obvious
> >> tapering or visible bright metal. The
> > ebay lens doesn't have any place
> >> where an image intensifier could be
> > placed according to the old
> >> pictures.
> > regards, Anthony
> > The Nocta is described pretty well in Oosten's "The Ultimate Asahi
> Pentax Screw Mount Guide 1952-1977," pgs 255-256. From the three
> pictures in this book, it appears as though the eBay lens is complete
> minus the larger focusing handle. A rare unit indeed.
> > The description of lens from the book:
> > "The lens is a highly specialized Takumar 1:3.3/300mm for Infrared
> photography. The minimum aperture is f/22, the angle of view is 8
> degrees. It was supplied with a 256X Neutral Density filter (42mm) for
> use under daylight conditions. The actual front of the lens measures
> 300/3.3 = 91mm in diameter of which only the central part is used in
> daylight." - pg 255.
> > -Brendan
> > --
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