Pentax Screw Mount Lenses

Discussion in '35mm Cameras and Accessories' started by waynecrider, Dec 18, 2005.

  1. waynecrider

    waynecrider Member

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    Were there any great Pentax screw mount lenses that had the auto/manual diaphragm switch?
     
  2. josephaustin

    josephaustin Member

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    Im not sure what you mean, the switch was usually on the camera for the Pentax series, and the lens had a small button an the inside of the back flange.
     
  3. Trond

    Trond Subscriber

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    Pentax had a Auto/Manual switch on all Super-Takumar lenses or newer, at least as far as I know. Earlier lenses, such as Takumar and Auto-Takumar don't have it.

    In other words, there are a great deal of great Pentax screw mount lenses with the Auto/Manual switch.

    Trond
     
    Last edited by a moderator: Dec 18, 2005
  4. Donald Qualls

    Donald Qualls Member

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    For certain, my Super Takumar 50 mm f/1.4 has the auto-manual ring; turning it to manual stops the lens down the same as turning on the meter or pressing the shutter release. This would also allow using it as a "preset" lens on a non-auto M42 camera, as long as the operating pin doesn't interfere with anything in the camera.
     
  5. Marco Gilardetti

    Marco Gilardetti Member

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    The answer is:

    28mm f:3,5 yes, great lens
    50mm f:1.4 yes, outstanding lens
    85mm f:1.9 yes, superb lens
     
  6. titrisol

    titrisol Member

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    The ones I have all of them have the "switch"
    Besides the ones Marco mentiond:
    200/4
    55/1.8
    50/1.4
    17/4
     
  7. Seele

    Seele Member

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    Wayne,

    Automatic diaphragm M42 lenses without the A/M switch are actually quite a minority, I am wondering why you are hoping to find those specifically with this feature though...

    If there is a need for you to stop down the diaphragm by hand, perhaps not by using the camera's stop-down actuator (or even if you use something like a very early Contax/Pentacon or Praktica without this feature), then also consider those lenses made without automatic diaphragm altogether. I use a number of them regularly such as the Hugo Meyer Orestor 100/2.8 (first version), Pierre Angenieux Retrofocus R1 35/2.5 (first version as well), among others; they are very satisfactory too.
     
  8. josephaustin

    josephaustin Member

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    Now I understand, sorry I was confused.
     
  9. waynecrider

    waynecrider Member

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    For use with a P adapter on a older Canon body. You have to stop the lens down manually. The reason I was thinking of using the Super Tak's was the high regard for their lenses, and quite possibly cheaper prices. Well I did a little research thru dealers and the cheaper prices is now just an imaginary dream, but I'll probably look at Ebay and see how their going. I could use a long lens over 200mm.
     
  10. mgb74

    mgb74 Subscriber

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    Good luck in finding a Super Tak or SMC Tak over 200mm at a reasonable price.

    Spotmatic users don't realize how obsolete those screwmount lenses are (you know, the one's with the great glass, tough mechanical build, and smooth focusing). :smile:

    I still have my Spotmatic and wish I had never sold my 28mm Super-Tak.
     
  11. Ronald Moravec

    Ronald Moravec Member

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    Pretty much had them all at one time. They were all decent, but some weren`t so hot full open like my 35 2.0 49mm. I had tried several 50 1.4 Super Takumars and SMC one and was not impress with 1.4 and 2.0 on any. I particularly liked the 50 4.0 and 100 4.0.

    The focus mounts were well VERY well made, but the diaphragm mechanisms were not robust enough to take even a slight fall without becoming sticky.

    I had 21,24,28,35 3.5 35 2.0 50 1.4 85 105 135 3.5 and 2.5 200 4.0 and 5.6, 300 4.0 and 6.3 and the two macro Takumars and the 80/200 zoom.

    They were all sold when I discovered Leica could make black and white prints I could only dream about with the Pentax.

    If you do color you will be happy unless you shoot some chromes with the Takumar and Leica on the same roll under the same conditions.

    Digital did not exist when I sold my stuff so I can`t say how it will react with a sensor.

    All the Takumar lenses were sold with caps, cases, and the proper shade. Wides from 35 down had clamp on square ones. Others were screw in round. Unfortunately I have seen used lenses in stores minus all the shades etc, only to see them in the junk bin. Store owners do not even try to keep the equipment together so much has gone missing over the years.
     
  12. Zathras

    Zathras Subscriber

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    They were all garbage!!! If you have any of those vile things, pack them carefully and send them to me for disposal, free of charge :tongue: :tongue: :tongue: I would especially like to relieve some poor deluded soul of of the burden of owning a nasty old 300mm Super Takumar or the same in SMCTakumar. :D

    Mike Sullivan
     
  13. waynecrider

    waynecrider Member

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    I was given a K1000 yesterday, but alas it has no dof review. Were there any lenses in the K mount that had the stop down availability or were they the screw mounts only?
     
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  15. titrisol

    titrisol Member

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  16. waynecrider

    waynecrider Member

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    The camera actually came with a manual! After reading as much as possible I see that the "A" lenses have stop down metering in the sizes 400mm+. Guess I'll just have to shoot by the hyperfocal method and visualize.
     
  17. Karl K

    Karl K Subscriber

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    Oh, yes! I have both the 50mm and 100mm SMC Takumar Macro lenses. Both superb. Also, the 35/2.0, 50/1.4 and 85/1.8 were excellent. I never had a great 28mm, though.
     
  18. ArchaeoK

    ArchaeoK Member

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    I am trying to choose between three 200mm M42 lenses and I was wondering if you guys could help. Also, if you know anything about the actual manufacturers of these lenses, I'd be greatly appreciative. The first lens is a Vivitar 200mm F/3.5 Auto Telephoto #28610273. The second is a Soligor TELE-AUTO 200mm, F3.5 #17100327. The last is a lens marked AUTO-ALPA, Multi-Coated, For ALPA Swiss, 1:3.5 200mm. It's #2540049 and is made in Japan as is the other two. I've found a little bit out about the Vivitar, but not the other two. Thanks in advance for any info you can give me.
     
  19. Marco Gilardetti

    Marco Gilardetti Member

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    Theorically speaking (I have none fot the lenses you listed), the one branded "ALPA" should totally defeat all others. The ALPA brand was once famous for high-precision standards, almost hand-crafted swiss machinery. Their products were expensive as hell.
     
  20. mawz

    mawz Member

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    Select the aperture then unlock the lens and rotate it slightly, the lens will stop down to the selected aperture. Don't rotate too far or the lens will of course come off.

    This trick works with any Nikon or Pentax body that selects the aperture on the lens and lacks DoF preview.
     
  21. Nick Zentena

    Nick Zentena Member

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    I'd take the Vivitar. But the final choice would depend on condition. Old lenses vary alot depending on how they've been used and abused.
     
  22. Paul Howell

    Paul Howell Member

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    You might want to check to see if you find a historical site for Alpa to see if the lens was made to Alpa specs or just rebranded Alpa. Of the other 2, without testing, I would give the nod to the Vivitar, Soligor made some very good lens including rebranded Mirandas, others were real dogs.
     
  23. waynecrider

    waynecrider Member

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    I ran across two screwmount 28mm lenses yesterday at a camera dealer, one 28mm had a 55mm front filter thread I believe (Super Tak f2.8) and the other had the standard 49mm filter thread and was smaller, but I can't remember if it was a 2.8 or the 3.5, but it was a Super Tak as well; No SMC noted on either lens. My question is, is if either lens is worthy to buy. The lens with the larger filter thread was $89 and the other $69. I think on refelction now that they were both 2.8's.
     
  24. cao

    cao Member

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    Something's not right here. I don't think Pentax made any M42 28s faster than f:3.5. The 28/3.5 SMC is not a bad beast if you run across one.
     
  25. Paul Howell

    Paul Howell Member

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    Pentax made a 28 2.8, I have the 3.5 which I think is very sharp even wide open. Unless you really need the extra speed I would go with the 3.5 just to keep the filter set at 49mm which will match the 35, 50, and 105. But the 55mm filter will match the 24mm, 85mm, 200 and 300mm lens as well.
     
  26. Mark Layne

    Mark Layne Member

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    Also the late 35 f2 Super Takumar ( not SMC)
    This and the 50 f 1.4 are often yellowed from radioactive elements and almost have built in yellow filters. Superb
    Mark