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02-09-2013, 04:18 PM   #1
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What lenses have same focus turning direction?

When I have the camera to my face and turning the lens clockwise i get towards infinity. Other non Pentax lenses goes the other way. Why? Do anyone have suggestion for a lens that turns the same way like the Pentax?


Last edited by striker_; 02-09-2013 at 04:27 PM.
02-09-2013, 04:23 PM   #2
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Sigma lenses go backwards, I think most others go the right way.

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02-09-2013, 04:23 PM   #3
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QuoteOriginally posted by Adam Quote
Sigma lenses go backwards, I think most others go the right way.
Sigma is not consistent. Depends on the lens.
02-09-2013, 04:51 PM   #4
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My old Vivitar macro also turns the "wrong" (anti-Pentax) way.

02-09-2013, 05:15 PM   #5
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Rikenon's sometimes go the other direction, not modern, but it's worth noting if you have issues with reversing muscle memory.
03-01-2013, 12:49 PM   #6
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QuoteOriginally posted by striker_ Quote
When I have the camera to my face and turning the lens clockwise i get towards infinity. Other non Pentax lenses goes the other way. Why? Do anyone have suggestion for a lens that turns the same way like the Pentax?
Funny, I was just asking the same question on another forum and was searching for confirmation and found your post. I have some Takumar lenses that focus infinity<-->close. Apparently this is the same for Nikon lenses and is termed, 'The Nikon Way'. Nearly all other lenses go the other way, which is considered normal. So, stay with your Pentax lenses or go to the dark side and you will be all set.
03-01-2013, 12:59 PM   #7
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Old manual K-mounts here that go the non Pentax way
Vivitar, Sears, Makinon, Magnon, Sun-Zoom
03-02-2013, 02:37 AM   #8
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Now there is a good idea for a "sticky". Nikon has traditionally been viewed as contrary having taken its cue from Zeiss back in the day. From my shelf:

Pentax way:
  • All Asahi/Pentax-branded
  • XR Rikenon 50/2
  • Auto-Rikenon 50/1.7

Non-Pentax way:
  • All my Vivitars
  • Adaptal-2 Tamron 28/2.5
  • Adaptal-2 Tamron 70-150/3.5
  • Auto-Rikenon 55/1.4
  • Helios 44M 58/2
  • Jupiter-9 85/2
  • Auto Mamiya/Sekor 5/1.8
The strange one is the non-Pentax way Auto-Rikenon. Having the two Auto-Rikenons of similar vintage but different direction is puzzling. The Helios and Jupiter also make sense in that they are derived from pre-WWII Zeiss designs.


Steve

P.S. I would expect a creative mix for Sears lenses as well. Historically most have been Ricoh-derived and follow the Pentax-way, but not always.


Last edited by stevebrot; 03-06-2013 at 03:30 PM.
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