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02-16-2013, 10:50 AM   #1
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what is an S lens ?

in the custom menu on the k100d super it mentions an S lens. specifically: Fl with S lens used ( when S mount lens is used , focus indication is either available or unavailable ) just wonedering , thanks

02-16-2013, 10:57 AM   #2
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QuoteOriginally posted by dh4412 Quote
in the custom menu on the k100d super it mentions an S lens. specifically: Fl with S lens used ( when S mount lens is used , focus indication is either available or unavailable ) just wonedering , thanks
Screw mount, I believe. Basically it can't tell if a screw mount lens is even mounted, so you have to tell it. There is menu option about setting it to "available" and you'll have to set the aperture ring option to "permitted".
02-16-2013, 12:31 PM   #3
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The S lens in the K100D User's manual is in the setting of the focal length, so that is either a:
  • Pentax M42 Screw Mounted lens, or any other make's M42 lens and/or
  • A Pentax K mount lens either a K lens or a M lens.

The camera needs to know the focal length so that it can set the SR (Shake Reduction) to the appropriate focal length. For the Pentax A, FA, FAJ, DA, DAL, etc. lenses, the body reads the focal length off the mount.

02-17-2013, 05:56 AM   #4
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ok, so a screw mount lens , with an adapter i guess ? don't have any of those yet, is there an official adapter for those that works ?

02-20-2013, 08:45 PM   #5
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Here is everything you need to know about the M42 to K adapter...
02-21-2013, 06:47 AM   #6
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thanks for that link to the adapter. do these go on the lens or the camera ? does it matter ?
02-21-2013, 07:28 AM   #7
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I usually put it on the lens first, and then snug it down with a K-mount rear cap. Not too much, just enough to keep it steady.
02-21-2013, 07:55 PM   #8
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I usually put mine on the lens first and the mount onto the camera body. Taking it off - half the time its just unscrewing it and then removing the adapter from the camera. The other half, the adapter comes off with the lens.



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