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12-27-2013, 04:23 PM   #1
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Minolta Adapter?

I have a couple of old Minolta film lenses (MD Mount) and Im wondering if anyone had ever used this adapter? Is it worth the 40 bucks?

12-27-2013, 04:53 PM   #2
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Tough call. I suppose it depends on how many lenses you have or if you can live with the loss of image quality.

I have a glassless Minolta adapter as I was only interested in using my bellows and macro lenses. At $15 USD I figured I couldn't go wrong. See my "review" here:
https://www.pentaxforums.com/forums/22-pentax-camera-field-accessories/96884-...ml#post2356857
12-27-2013, 05:32 PM   #3
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QuoteOriginally posted by Not a Number Quote
Tough call. I suppose it depends on how many lenses you have or if you can live with the loss of image quality.

I have a glassless Minolta adapter as I was only interested in using my bellows and macro lenses. At $15 USD I figured I couldn't go wrong. See my "review" here:
https://www.pentaxforums.com/forums/22-pentax-camera-field-accessories/96884-...ml#post2356857


Well the adapter I linked says that the glass element is removable, and I have to prime lenses that would be nice to use.
12-27-2013, 05:45 PM   #4
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Welcome to the Pentax Forums!

Minolta lenses were designed for a much shorter distance from mount flange to focal plane (film) than that used for Pentax-K mount. As a result, adapters for MD to K-mount require an optical element placed behind the lens to allow for infinity focus. This works, but there is a degradation in optical quality. As a result, it is not commonly done.

Steve

12-27-2013, 10:24 PM   #5
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QuoteOriginally posted by stevebrot Quote
Welcome to the Pentax Forums!

Minolta lenses were designed for a much shorter distance from mount flange to focal plane (film) than that used for Pentax-K mount. As a result, adapters for MD to K-mount require an optical element placed behind the lens to allow for infinity focus. This works, but there is a degradation in optical quality. As a result, it is not commonly done.

Steve

How bad is the degradation when that method is used?
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