This older M42 lens does't come with a A/M switch. It has a long pin sticking out with the aperture wide open and my K20D body won't depress it to the close down the blades according to aperture stops
I am planning to do some modification to make the lens manual permanently. I researched on various discussions with questions to all my buddies such as Mis, Peter, Frank, and few others from another forums, here is the summary of possible remedies:
- Use some way to jam the pin with cotton swap
- Converting Auto-Aperture M42 Lens to Manual Aperture on Flickr - Photo Sharing! - Crazy clue to press down the pin in position
- Peter reported success with Helios-44M
- Unfortunately, my pin is long and the spring seems very strong underneath
- Subject to glue used, possible to undo the change - Use of Kindai M42 to K mount adapter
- Helios 44m-5 is good for k10d?
- thanks to Frank for the suggestion
Related:
5 comments:
Hi
I'm very glad that i've found your web site, i was looking for more info about mamyia/sekor 55mm f1.8
Thank you for sharing all this informations
Regards from Romania :)
i was talking about mam[b]iy[/b]a/sekor :blushing:
Thank you so much for the visit and comment. Please feel free to search on the keyword with M42 as in this link
http://techtheman.blogspot.com/search?q=m42
May I suggest the following ingenious trick?
http://chris.stingray.free.fr/Tuto/Modif_H44M4/Pinoche_H44M-4.html
Thank you so much for the informed link to using wire on the aperture pin. I end up using rubber band to tide the aperture lever as if the pin is pressed down.
flickr set in:
Lens mod & f/2.8 test shots
Post a Comment