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Minolta MD 50mm f/1.2 lens

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ruff View Drop Down
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Post Options Post Options   Quote ruff Quote  Post ReplyReply Direct Link To This Post Topic: Minolta MD 50mm f/1.2 lens
    Posted: 31 January 2010 at 05:22
Hi guys,

I'm going to buy this lens for my Sony A900 but at first I would like to check if it can be used for Sony Alpha DSLR?

I didn't see this lens in dyxum fixed lens list, that's why I would like to check. I hope Sony will make a 50mm f/1.2 lens.

Thanks,
 



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mz-n10 View Drop Down
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Post Options Post Options   Quote mz-n10 Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 05:26
no it is not. MD/MC lenses can not be used on Alpha SLRs unless you use an adapter or remount the lens.
a900|a200|M70-210f4|M50f1.4|S17-80|∑28-80|24-70Z|T17-35|Samyang 14|Samyang85f1.4
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ruff View Drop Down
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Post Options Post Options   Quote ruff Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 05:29
Thanks for your fast response, I really like this lens, it looks so cool, nice built structure.

Edited by ruff - 31 January 2010 at 05:30
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Post Options Post Options   Quote ruff Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 05:51
I'm just wondering if I use a MD converter mount adapter, will it make any different in image quality or the way it's supposed to capture lighting?
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Post Options Post Options   Quote pdeley Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 06:00
your options would be to

- rebuild the lens mount so it fits alpha mount directly
- get an adapter with correcting lens to maintain infinity focus; it would lose you about half a stop light and may enlarge about 1.1-1.2x
- get an adapter without correcting element, it would act like a macro extension ring and thus you would no longer be able to focus on infinity & the thicker the ring the shorter your max focus distance would become

on the other hand you could try to find an f1.2 in M42 screwmount instead, that would work with a straightforward M42-alpha adapter at no loss of quality, focus distance or stops.
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Post Options Post Options   Quote mz-n10 Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 06:01
yes and no. if you want infinity focus then you need an adapter with a glass element, which basically is a 1.2x teleconverter so depending on the glass element could degrade image quality.

if you dont need it to focus to infinity then you can knock out the glass element and you have a mild extension tube.

OR you can remount the lens, which wont degrade you image quality and you can focus to infinity.
a900|a200|M70-210f4|M50f1.4|S17-80|∑28-80|24-70Z|T17-35|Samyang 14|Samyang85f1.4
 



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utcreeper View Drop Down
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Post Options Post Options   Quote utcreeper Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 06:42
How difficult is this remounting business?
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Post Options Post Options   Quote zk-cessnaguy Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 06:47
The remount isn't impossible, but does require a new mount fabricated. a glassless MD to MA adapter can be machined to fit. You'd need access to a machine shop though.
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ruff View Drop Down
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Post Options Post Options   Quote ruff Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 06:54
seems to be lots of headache, I really appreciate all of your fast response.
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Post Options Post Options   Quote superx2won Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 11:10
if you able to find one in cheap... get it fast... if you don't like it.... just sell to me cheap.. hehe..
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Post Options Post Options   Quote vinciqator Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 11:38
You don't have to machine a new fitting from scratch - just get an old bummer lens - 35-80 giljotin front - preferably broken and use the fitting from it. Also get a fokus conformation / LensID chip and machine them all together.

I prefer the 50/1.2 to the 55/1.2, mainly on sharpness. Used in APC-S mode on my a900 it becomes a 77 mm portrait lens - slightly short in reach, but OK in my studio.

Edited by vinciqator - 31 January 2010 at 11:41
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Post Options Post Options   Quote ffrolvaag Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 15:50
If you buy it and want to remount it, you can throw up a help post. There are others on the forum that have figured out how to remount the lenses and would be happy to do so for you for a fee. I have a 58mm f1.2 remounted into the Maxxum mount. I absolutely love it. I have wanted to get a 50mm f1.2 for a while, but haven't found one at the right price just yet.
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Post Options Post Options   Quote ricardovaste Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 15:53
If you weren't in the US I'd convert it for you. It's a bit more tricky than other conversions, but still very do-able. I did a couple of them well over a year ago now. It's a great lens. If they'd put more blades/circular aperture in it would 'perfect'.
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Post Options Post Options   Quote psyblue Quote  Post ReplyReply Direct Link To This Post Posted: 31 January 2010 at 17:24
Hey guys I have an 50mm f1.2 with MA-MD adapter with glass...

Anybody want this lens can contact me, I am bot thinking of to use it for myself.

I actually prefer AF lenses
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