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05-27-2011, 04:06 PM   #1
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Butchered A50 f/1.2

Whatís the feasibility of replacing the aperture pin on an A50 f/1.2 if itís been cut off by a philistine using another make of camera?

05-27-2011, 04:16 PM   #2
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I think they are different on each lens (could be wrong about that) but you might try getting a junked f2.0 to replace the part. Chances are, you'll need the springs and everything unless it was just cut off (the lenses are of different body thickness as you get faster which is why I think it will be a problem).

05-27-2011, 04:33 PM   #3
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I believe it was just cut off to fit an EOS. I'm just speculating really, there is an example for sale that has been butchered, I am half thinking of getting it just to bring it back home to the Pentax fold and as an added bonus perform a reverse butchering just to show it can be done. It really, really annoys me to see some of our best glass messed with to fit on other brands.
05-27-2011, 05:11 PM   #4
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QuoteOriginally posted by robbiec Quote
It really, really annoys me to see some of our best glass messed with to fit on other brands.
The price we pay for knowing better!!!

05-27-2011, 06:24 PM   #5
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QuoteOriginally posted by robbiec Quote
It really, really annoys me to see some of our best glass messed with to fit on other brands.
And the worst part is that many of them could be modified "civilly" in the 1st place.
05-27-2011, 11:53 PM   #6
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I've seen some on ebay every now and again that have been massacred and I cry a little each time.
05-28-2011, 12:48 AM   #7
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isn't their old 50mm 1.2's enough for them? gosh they got a heck a lot of them on the used market in comparison to what is available for Pentax users.
05-28-2011, 04:36 AM   #8
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Two people here thinking about repairing such lenses. I can only hope that you will post pictures of the process.

05-28-2011, 09:08 AM   #9
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QuoteOriginally posted by robbiec Quote
I believe it was just cut off to fit an EOS. I'm just speculating really, there is an example for sale that has been butchered, I am half thinking of getting it just to bring it back home to the Pentax fold and as an added bonus perform a reverse butchering just to show it can be done. It really, really annoys me to see some of our best glass messed with to fit on other brands.
Send it to Eric, he'll have the necessary parts.

Eric's web site:

http://pentaxs.com/index.html

Phil.
05-28-2011, 10:49 AM   #10
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QuoteOriginally posted by Pentaxor Quote
isn't their old 50mm 1.2's enough for them? gosh they got a heck a lot of them on the used market in comparison to what is available for Pentax users.
You mean the Canon FD lenses? Nope, the register distance of EOS mount is 2mm longer than the FD mounts and 1.46mm shorter than Pentax K mounts, making PK to EOS conversion (with infinity) ideal.

Thanks,
05-28-2011, 11:23 AM   #11
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QuoteOriginally posted by excanonfd Quote
You mean the Canon FD lenses? Nope, the register distance of EOS mount is 2mm longer than the FD mounts and 1.46mm shorter than Pentax K mounts, making PK to EOS conversion (with infinity) ideal.

Thanks,
exactly my point. why don't they butcher those instead? I knew it is easy to simply cut off the aperture pin, but still it won't make Pentax users happy for their K-mount camera use.

anyways, I have seen some people here have somehow done a DIY conversion of FD lenses for K-mount use with some success. I'm not so sure how that could be that tough of a task for EOS users to do the same thing.
05-28-2011, 12:13 PM - 1 Like   #12
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If it is any help, I probably have a 50/1.7A that could be used as a donor.

Failing that and bearing in mind you are in Ireland not the US, I know a couple of repairers in the UK who are up to Erics standard

Kim
05-28-2011, 12:30 PM   #13
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Thanks for the offer Kim , I have a couple of 'A's hanging around the place that I could use. I would appreciate it if you could pm me the names of the repairers that recommend though, always useful to know.

The other thing is that I have not bought it , I've seen it listed on the Bay by a well known purveyor of over priced Pentax gear and they only want £440 or $725 or Ä505 BIN but will take an offer. Now I do know that a bricks & mortar store in Central London sold one last week for £329 (they also have an A*85 f/1.4 for reasonable money) so £440 for a butchered example is really taking the P.
05-28-2011, 07:41 PM   #14
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Heck, I'll send you my non-butchered one for 440 pounds! ;-)

Let us know if you try the repair.
05-29-2011, 04:25 AM   #15
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Someone (not me) paid full price for it | Stunned!
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