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05-28-2017, 04:53 AM   #1
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Canīt reach focus

Hi guys,
I am a newcomer to this forum and am looking for an advice. On my K-30 I have no problems using the old Takumars from my Spotmatic days. Both the 200mm and 400mm works nice.
But recently I bought on ebay an old SMC Takumar 4.5/500 but I canīt focuse above 100yards.
Whatīs wrong here?


05-28-2017, 05:38 AM - 1 Like   #2
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sergysergy's Avatar

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It can be either the adapter (unlikely since you have used it with other lenses) or the lens. You may have to get focus adjusted.
05-28-2017, 09:57 AM - 1 Like   #3
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Make sure the the front element is tight, I have had an old Tamron 80-210 where it was loose and caused a similar problem
05-28-2017, 05:01 PM   #4
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Are you using the same m42 adapter on the 500 as you use on the 200 or 400 when they reach infinity? It does matter, because some of the M42 adapters add a little bit of extra distance between lens and camera, and the effect of that is the loss of the ability to reach infinity focus. It's a bit like using extension tubes but the reverse - us macro types use them to be able to focus closer than the lens would do on its own, but the corrollory of this is that you also use infinity focus.

05-28-2017, 10:22 PM   #5
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I think that might be the problem, I used another m42 adapter on the 500!
Never thought that would be a difference. I have several adapters, will try out the others to sort out which one to use.
Thanks for your help, guys!

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