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Old Jan 6, 2008, 11:32 AM   #1
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THIS??
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Old Jan 6, 2008, 12:33 PM   #2
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New one on me!
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Old Jan 6, 2008, 12:48 PM   #3
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Looks like someone mounted a panfocus lens in a TX Pentax mount for a Vivitar 450mm TX lens to adapt it tothe camera. At f40 it must be a special purpose lens, not practical for every day use or maybe not even intended for 35mm use? Maybe for electronic (TV) surveillance?
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Old Jan 6, 2008, 12:51 PM   #4
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if i understand correctly, a pan focus lens is one that is always in focus and can not be adjusted. it's basically a pinhole lens.
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Old Jan 6, 2008, 12:56 PM   #5
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i've asked the seller. i think penolta is right. it's the only thing i could come up with also. it was included in my question. i'd like to have the viv450..

roy
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Old Jan 6, 2008, 12:59 PM   #6
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ishino wrote:
Quote:
if i understand correctly, a pan focus lens is one that is always in focus and can not be adjusted. it's basically a pinhole lens.
that's right. i found that info out. this would put everything from 1' to infinity in focus. i'm just confused about the setup.

roy
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Old Jan 6, 2008, 4:23 PM   #7
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robar wrote:
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THIS*??
No idea Roy, ... I'm scratching my head on this one ???... Jack.

http://cgi.ebay.co.uk/VIVITAR-TX-MOU...QQcmdZViewItem
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Old Jan 6, 2008, 6:48 PM   #8
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jachol wrote:
Quote:
robar wrote:
Quote:
THIS??
No idea Roy, ... I'm scratching my head on this one ???... Jack.

http://cgi.ebay.co.uk/VIVITAR-TX-MOU...QQcmdZViewItem
I believe Vivitar had a line of interchangable mount lens like Tamron's adaptall series. I would guess that this is a mount for those lenses.

Tim
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Old Jan 6, 2008, 10:16 PM   #9
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TX (Vivitar) and T4 (Soligor) were interchangeable bayonet (and thead) mounts for cameras with automatic diaphragms. They were available for most SLRs. They disappeared with the advent of autofocus. They were a great boon to those with bodies of different manufacdturers (Iused Pentax and Miranda at the time).

To be strictly correct, T mounts were (and are) solely manual.
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Old Jan 6, 2008, 11:01 PM   #10
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NonEntity1 wrote:
Quote:
jachol wrote:
Quote:
robar wrote:
Quote:
THIS??
No idea Roy, ... I'm scratching my head on this one ???... Jack.

http://cgi.ebay.co.uk/VIVITAR-TX-MOU...QQcmdZViewItem
I believe Vivitar had a line of interchangable mount lens like Tamron's adaptall series. I would guess that this is a mount for those lenses.

Tim
You are correct Tim. They came in a lot of different mounts including the K mount and the M42 screwmount. I have a Vivitar 300mm lens with one and the only problem with them is they have a lever that allows quick release from the lens.... Gotta whatch out or it will quick release your lens right on the ground!






Dawg

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