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02-16-2020, 03:17 PM   #1
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Auto-Takumar 55mm f/2.2

Could someone please post an image of the back of this lens? I have one which doesn't lock shut. It looks to me as if there is something missing at the rear of the lens.

Many thanks, Kris.

02-16-2020, 03:38 PM   #2
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Hi Kris, I reckon you might have more luck in the Pentax SLR Lens Discussion forum Pentax SLR Lens Discussion - PentaxForums.com
02-16-2020, 03:41 PM   #3
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QuoteOriginally posted by nickthetasmaniac Quote
Hi Kris, I reckon you might have more luck in the Pentax SLR Lens Discussion forum Pentax SLR Lens Discussion - PentaxForums.com
I thought I'd try the film users first given the age of the lens and the fact many of us like using old gear. If I get no joy, I'll dip my toe into the lenses pool...
02-16-2020, 04:18 PM - 1 Like   #4
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QuoteOriginally posted by womble Quote
Could someone please post an image of the back of this lens?
Would this site be of help? It shows a couple of images of the rear of the lens as well as a tear-down.

Strip down, clean and lubricate an Auto Takumar 55mm f/2.2 M42 lens ? Simon Hawketts' Photo Blog

Here's another one with some images:

http://m42lens.com/m42-lens-database/755-asahi-optical-co-auto-takumar-55mm-f-2-2-22


- Craig

02-16-2020, 04:32 PM   #5
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QuoteOriginally posted by womble Quote
Could someone please post an image of the back of this lens? I have one which doesn't lock shut. It looks to me as if there is something missing at the rear of the lens.

Many thanks, Kris.


the back of what-used-to-be-mine:

02-16-2020, 07:55 PM - 1 Like   #6
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is this a preset lens?

where the max aperture is set on the front of the lens and then the lever (which you adjust) will open wide for focusing and then be closed down for the shot at set aperture
02-16-2020, 08:48 PM   #7
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QuoteOriginally posted by Aaron28 Quote
is this a preset lens?

where the max aperture is set on the front of the lens and then the lever (which you adjust) will open wide for focusing and then be closed down for the shot at set aperture
it is not - the lens has an aperture ring, but instead of an A/M switch, it has a trigger you cock...
02-16-2020, 08:56 PM - 1 Like   #8
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QuoteOriginally posted by pepperberry farm Quote
it is not - the lens has an aperture ring, but instead of an A/M switch, it has a trigger you cock...
weird and neat....have not come across the likes! thanks

02-16-2020, 09:07 PM   #9
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QuoteOriginally posted by Aaron28 Quote
weird and neat....have not come across the likes! thanks
I just sold my copy recently - it's a great little lens...
02-17-2020, 12:12 AM   #10
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It has a semi-automatic diaphragm. You have to manually open it up but it closes down automatically when you take the picture.
02-17-2020, 03:34 PM   #11
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Thanks everyone, very helpful. K.
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