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06-04-2010, 03:58 PM   #16
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QuoteOriginally posted by Ira Quote
I hate duct tape and only use duck tape.
I've taped a few ducks in my day.
(Don't ask what I do in my night.)
When I tape a duck, it want it to STAY taped.
Too many ducks come untaped at odd times.
I really hate when that happens.
Especially without a camera near.
Superglue hold the feathers better.

06-05-2010, 09:19 PM   #17
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QuoteOriginally posted by RioRico Quote
I've taped a few ducks in my day.
(Don't ask what I do in my night.)
When I tape a duck, it want it to STAY taped.
Too many ducks come untaped at odd times.
I really hate when that happens.
Especially without a camera near.
Superglue hold the feathers better.
When I tape 'em, they generally stay taped...

06-05-2010, 09:30 PM   #18
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These people make a custom version of the m42-k adapter that deals with auto ap lenses that lack an A-M switch. The price has gone up recently. Since I only have one of these lenses, I haven't gotten around to dealing with this issue.

M42 lenses on Pentax K

QuoteOriginally posted by Nesster Quote
There is an adapter with an inner flange to hold the pin in (Pentax never did this, as they had the A/M switch, but Contax/Yashica has the flange in theirs).

Manual Focus Lenses :: View topic - Pentax-k /m42 adapter with inner flange
Mamiya's m42 adapter had an inner flange to deal with this to, except it was actually sort of floating spring steel.

Last edited by Blue; 06-05-2010 at 09:36 PM.
11-09-2010, 10:47 PM   #19
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I've recently posted these pics in a post/article about a Tokina EL28/2.8 which is auto-only. When removing the back of the lens with the aperture activation mechanism, the aperture closes making it a manual lens.

Removing the full copper mechanism in the second picture makes this lens a manual lens.

11-10-2010, 06:24 AM   #20
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I contacted SRB-Griturn and ask them about the adapter with the flange. They say theirs comes with a flange but may not depress the pin on some lenses all the way.

I found this one. 黎环m42-PK无簧片第二代改口环紫砂黑 无限远合焦 - 淘宝网 It received a very good review on an other site. It does not have the locking tab but the person that had it said it went in the camera very well. It is installed and removed on the lens with the plastic cap provided. I do not read Chinese but I have a client from China and she told me the cost and ordered it for me. With shipping it was $25 US. I have the Pentax adapter but I do have some M42 lenses that do not have the manual switch. I will keep people updated when I get the adapter and do a mini review.

11-10-2010, 07:13 AM   #21
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Super glue seems to break down in higher temperatures or at least my past attempts to fix things @80 C or so for hours (sauna) at a time have failed :-)
11-10-2010, 02:00 PM   #22
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Another vote for putting a plastic sleeve over the pin on these type of lenses, even if it means taking the back off.

I bought a cheap M42 Super Paragon 135mm last week with no 'auto - man' switch like found on Tak's and Helios amongst others, the pin was the only method of operating the aperture.

Being lazy and not really wanting to take the rear of the lens apart I thought I would be clever and rotate a pressed alloy top hat shaped trim plate on the back of the lens that had a cutout for the aperture pin. I thought that by rotating it one screw hole the thin plate would hold the pin down.

It did, but too bloody well! it pushed the pin too far in and dislodged a spring in the levers rendering the aperture useless.
So I had to take the back off, then spend a fun hour or so figuring out where the spring should fit, and more importantly, how the hell to get it back in without a major stripdown!

I got it back in and working, and then sleeved the pin with the old faithful bit of Qtip.

Do it right, and do it once.

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