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11-01-2013, 09:02 AM   #1
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pentax smc 500mm 4.5

Is it possible to change a pentax smc 500mm 4.5 back to fit a pentax camera just the 1 am after had been converted to fit a cannon camera and the lad who got it is not to sure if it can, thats for your help

11-01-2013, 09:43 AM   #2
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What has been done to the poor fellow? It's impossible to answer without further details.
11-01-2013, 09:46 AM   #3
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The k500/4.5 as i understand the beast has no auto aperture linkage, so it should be possible. How much work is anyone/s guess, it may be it simply has a k to canon adaptor attached, or m42 to canon

Are you sure it is SMC Pentax and not SMC takumar?
11-01-2013, 09:48 AM   #4
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Is it possible? Well, nothing is truly impossible. Is it hard? Well, that depends on the conversion. As I recall, the K 500 was never an auto-step-down lens, meaning the usual problem of a missing lever should not apply. If I was to convert it to canon, I'd just use a K->EF adapter, but maybe whoever converted it wanted something a little more permanent.

Hard to say for sure without pictures, though.

11-01-2013, 12:37 PM   #5
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Original Poster
QuoteOriginally posted by Lowell Goudge Quote
The k500/4.5 as i understand the beast has no auto aperture linkage, so it should be possible. How much work is anyone/s guess, it may be it simply has a k to canon adaptor attached, or m42 to canon

Are you sure it is SMC Pentax and not SMC takumar?
Its defo the pentax smc 500mm and he did mention it has a m42 adapter thanks for ya replays
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