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09-28-2015, 10:18 AM   #1
tntblaster11
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Pentax K50 + SMC FA 100-300mm

I own a SMC Pentax FA 100-300 F4.7-5.8 telephoto lens. It is currently mounted to a ZX50 camera body.

I would like to purchase a Pentax DSLR K-50.

Will this lense mount and work properly w/ the DSLR? I've found different charts that say yes, and no....

09-28-2015, 11:16 AM   #2
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Yes.
Any F or FA lens will work just like a modern lens.

Actually any K-mount lens will work but older ones lack auto focus or auto aperture.
09-28-2015, 11:30 AM   #3
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I have the FA 100-300 f/4.7-5.8, and it definitely works on all my Pentax DSLRs with full functionality. I don't know why any chart would say otherwise.
09-28-2015, 12:45 PM   #4
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If the "chart" came from Amazon - they get it all wrong. There are some lenses that have odd/large flanges in the rear mount that get in the way of some of the things inside the newer bodies but this is rare. (By Newer I mean any autofocus body film or digital with SDM or PowerZoom) lens contacts) Most of these are not Pentax but 3rd party. Your 100-300 will work.

09-28-2015, 03:03 PM   #5
tntblaster11
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Thanks for the quick replies !! I was looking at a chart at "mosphotos" if you google Pentax Lens Chart.. its the #1 link.

It confused me.. saying the ZX50 is a "crippled KAF2"... and that the metering might not work right w/ that lens mounted to a K mount body...
09-28-2015, 03:58 PM   #6
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The 'crippled' mount is only an issue with older, pre-A series lenses (the M, K column, furthest to the right). The "AF" column next to it is for a single very early (1981) autofocus lens that was just for the ME-F camera. The column you want for your lens is the fourth from the right, for F, FA, and D FA lenses.
11-10-2015, 01:29 AM   #7
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QuoteOriginally posted by tntblaster11 Quote
I own a SMC Pentax FA 100-300 F4.7-5.8 telephoto lens. It is currently mounted to a ZX50 camera body.

I would like to purchase a Pentax DSLR K-50.

Will this lense mount and work properly w/ the DSLR? I've found different charts that say yes, and no....
My SMC Pentax FA 100-300 F4.5-5.6 currently mounted and work with K-30 camera body...
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