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02-09-2016, 04:46 AM   #16
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Your new lens is made by Cosina sharp little Devil/

02-09-2016, 09:34 AM   #17
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QuoteOriginally posted by niceshot Quote
Your new lens is made by Cosina sharp little Devil/
I was looking at this new article (great one):

The Evolution of the Pentax K-mount - Articles and Tips | PentaxForums.com

and was wondering what kind of mount this Vivitar would be considered to have as in the table? I *think* my K-r is able to set the aperture/speed with this lens, so it seems like it is a "KA" or equivalent type mount?

Thanks,
Jim
02-09-2016, 10:24 AM   #18
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QuoteOriginally posted by ohaya Quote
I was looking at this new article (great one):

The Evolution of the Pentax K-mount - Articles and Tips | PentaxForums.com

and was wondering what kind of mount this Vivitar would be considered to have as in the table? I *think* my K-r is able to set the aperture/speed with this lens, so it seems like it is a "KA" or equivalent type mount?

Thanks,
Jim
"KA" with a little Ricoh "P" added for spice.


Steve
02-09-2016, 10:33 AM   #19
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QuoteOriginally posted by stevebrot Quote
"KA" with a little Ricoh "P" added for spice.


Steve
What is "little Ricoh "P""?

02-09-2016, 11:03 AM   #20
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QuoteOriginally posted by ohaya Quote
What is "little Ricoh "P""?
Ricoh had a program mode starting in 1984 with the XR-P. This is what the 'Ricoh Pin' is for.

Ricoh P lenses were not compatible with A mode on Pentax bodies and vice versa. Third party lenses usually had both the P pin and the A pin.
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