Andre,
Interesting idea! I never though of putting one of these lenses
reversed on ANYTHING, much less a 6x7. Let me know how your homemade
adapter works, I'd definitly be interested.
It's definitly a C mount lens, and a C mount camera. No way to
change lens flange or anything.
The lens in question is a 3.3-8 mm lens. I am now BELIEVE that the
lens is meant to mount close to some other ocular device; such as a
microscope or telescope. I'm going to put it away for further use later.
IL Bill
andre wrote:
> I guess you would need to do something that is not possible: push the
> lens inside the body...
>
> By the way, it may interest you to know that you can use 8mm and 16mm
> cine lenses REVERSED for Triple-X macros (the pun is for lilliputians).
> I mean 3X and over. If this is the case, you can vary the distance of
> the lens from the film plane with a bellow (and easily cover full frame
> on a Pentax 67), but the distance of the subject to the front of the
> lens (well... we could say the back as the lens is reversed) should not
> go over the distance between a 16mm cine lens and the 16mm film in a
> 16mm camera. This if you want the best optical quality.
>
> I don't know if this is clear... and if it may interest some PDMLers.
> I've got the theory (some...), I've acquired a few lenses recently, I'm
> actually working on some home-made adapters... the practice will follow
> within a few months I hope.
>
> Andre
>
>> Hey gang,
>>
>> I know this is a question that's never been asked before. I know
>> to be able to focus CLOSER to an object, you need a close up lens . . .
>>
>> . . . BUT, I have a project where I need to actually be able to
>> focus FURTHER from the lens. The lens in question is a c-mount lens,
>> whose focus seems limited to just a few mm away from the front of the
>> lens.
>>
>> I know this is an odd question, but does ANYONE know of - diopter
>> filters, or some other fix?
>>
>> Thanks,
>> IL Bill
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