Posted: Sat Jun 07, 2008 4:24 pm Post subject: |
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luisalegria wrote:
You should be able to use all of them on bellows or extension tubes, if you can work out the hardware mounting issues.
Some may be M39 threaded, you will need an M39-M42 adapter, and from there its easy.
Alternately, often its possible to mount these things on a T-adapter with the inner ring removed.
Alternately, I have had some success with drilled M42 body caps. If you make the hole the right size the thread will screw right into the plastic; or if the lens is small enough and has the flange, the body cap becomes a lens board.
Otherwise, tape, epoxy, etc. all have their uses !
I've done all the above.
The 80mm may focus to infinity on a bellows, it depends how short yours can go and what hardware you have to add to do the mounting; mine will only take @100mm to infinity. A focusing extension tube like the Accuras often found on ebay will almost certainly get that to infinity.
The 50mm will be macro-only in any case, but it should work perfectly well and give you great magnification on a bellows.
The 30mm is of course macro-only also, but it will almost certainly cover full frame on the DSLR to boot, as coverage increases the more macro you go; the smallest image circle is at infinity. I have 8mm movie lenses that give full coverage in macro. It certainly is going to be a very "up close and personal" lens, but with great magnification.
I agree that the 30mm was probably intended for some small format, 110 or the 16mm "spy camera" formats of the 50's-60's. _________________ I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |