Minolta to Pentax Adapter

fractal · 06-08-2010, 05:41 PM

MD to PK, or less likely A to PK.

Just wondering if they exist? Or can an existing adapter be modified to take the lenses?

Cheers

RioRico · 06-12-2010, 02:06 AM

This came up not long ago. The answer is: no. The registration (working distance) on Minolta lenses is shorter than for Pentax lenses. Canon's registration is even shorter than Minolta. Longer-register lenses can work optically on shorter-register mounts, but not vice-versa -- they will never focus to infinity. Canon is like a universal receptor, Pentax a universal donor.

IT IS POSSIBLE to build an optical adapter, like a short teleconverter, to mount a shorter-register lens, but image quality is degraded and it ain't cheap. Such is really only effective if the lens you want to mount is rare and costly. And I haven't seen any Minolta-Pentax adapters on eBay. Do some searching and you'll see.

pingflood · 06-13-2010, 12:05 PM

Yeah, Canon is super easy to adapt a lot of glass to, except ironically Canon's own.

06-08-2010, 05:41 PM	#1
fractal Inactive Account Join Date: Nov 2008 Location: Melbourne Photos: Gallery Posts: 3,547	Minolta to Pentax Adapter MD to PK, or less likely A to PK. Just wondering if they exist? Or can an existing adapter be modified to take the lenses? Cheers

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06-12-2010, 02:06 AM	#2
RioRico Veteran Member Join Date: Jun 2008 Location: Limbo, California Posts: 11,263	This came up not long ago. The answer is: no. The registration (working distance) on Minolta lenses is shorter than for Pentax lenses. Canon's registration is even shorter than Minolta. Longer-register lenses can work optically on shorter-register mounts, but not vice-versa -- they will never focus to infinity. Canon is like a universal receptor, Pentax a universal donor. IT IS POSSIBLE to build an optical adapter, like a short teleconverter, to mount a shorter-register lens, but image quality is degraded and it ain't cheap. Such is really only effective if the lens you want to mount is rare and costly. And I haven't seen any Minolta-Pentax adapters on eBay. Do some searching and you'll see.

06-13-2010, 12:05 PM	#3
pingflood Veteran Member Join Date: Jun 2008 Location: Borås, Sweden Photos: Gallery Posts: 3,169	Yeah, Canon is super easy to adapt a lot of glass to, except ironically Canon's own.