Using M42 adapter on nikon
Feb 22, 2017 22:49:35 #
Helge wrote:
Why? Even if you could get it to focus to infinity you would need to use it in stop down mode which will make focusing and metering very difficult. I would suggest to find a deal on a Nikon AF 50mm or even a Nikon MF AI/AIS lens at least it will couple to your D7100.
Screamin Scott wrote:
I have Pentax cameras. They work fine with M42 lenses, which they should because the modern K-mount was designed to make M-42 adapters straight-forward. However, even the official Pentax adapter doesn't provide capability to open the aperture for focusing and then stop down for shooting. Pentax users are heavy users of M42 lenses, and most of us use them totally stopped down .... frankly, that has never caused issues for me.Does it not have an auto feature to stop it down automatically to the pre selected aperture setting when the shutter is released ?
added: In the spirit of "a picture is worth a thousand words", here is 3000+ words of explanation using my own Super Takumar 50mm f/1.4:
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#1: the camera would have to manipulate the pin at "6:00" just below the glass in order to control whether the aperture is fully open or stopped down; I'm not aware of any adapters that actually do this
(Download)
#2: the slide switch next to the base of the lens controls how it actually responds to the pin showed in #1; in this position, the pin controls whether the lens is fully open or stopped down
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#3: the slide switch next to the base of the lens controls how it actually responds to the pin showed in #1; in this position, the lens is always stopped down
(Download)
Feb 23, 2017 07:31:36 #
Helge wrote:
Why? Even if you could get it to focus to infinity you would need to use it in stop down mode which will make focusing and metering very difficult. I would suggest to find a deal on a Nikon AF 50mm or even a Nikon MF AI/AIS lens at least it will couple to your D7100.
I have the Nikon 50mm f1.8 and love it. I purchased the Asahi Pentax Spotmatic w/50mm f1.4 lens in Vietnam (69). Just wanted to make use of what I have heard is a very fine lense that is just sitting in a camera case. Thanks for your input Helge.
Feb 23, 2017 07:39:36 #
rehess wrote:
I have Pentax cameras. They work fine with M42 len... (show quote)
Thank you for your effort and the photos. I understand the manual/auto pin. My problem is that I couldn't manually focus on anything more than a foot from the lens. I had it on auto but never even got around to moving to manual mode, which I don't think that would change the focal length unless I'm thinking wrong.
Feb 23, 2017 08:03:25 #
As an owner of a Pentax Spotmatic (which uses m42 lenses), a Nikon DSLR and a Nikon film SLR, I've researched the possibilities of adapting my wonderful m42 lenses to my Nikon cameras extensively and eventually came to the conclusion that it is not worth it, primarily because of the focal plane difference. Ultimately, using a manual Nikon lens (which are not terribly expensive on the used market) on my Nikon DSLR makes more sense than m42 lens adaption.
Feb 23, 2017 08:20:55 #
Same conclusion I came too years ago. My M42 lenses were Yashica, Helios & Pentacon branded. My Pentax lenses were in the Pentax bayonet. I use them occasionally on my M4/3rds cameras via adapters. I added to my Nikkor & Nikon mount lenses over the years & they work without the need for adapters of any sort on those bodies.. I have well over 100 lenses of various mounts, mainly Nikon. Oh, I lied, I do have one Pentax M42 screw mount lens. A 150mm F4 Super Tak and also some Vivitar, Hanimex & Spiratone branded M42 mount lenses as well.
rook2c4 wrote:
As an owner of a Pentax Spotmatic (which uses m42 lenses), a Nikon DSLR and a Nikon film SLR, I've researched the possibilities of adapting my wonderful m42 lenses to my Nikon cameras extensively and eventually came to the conclusion that it is not worth it, primarily because of the focal plane difference. Ultimately, using a manual Nikon lens (which are not terribly expensive on the used market) on my Nikon DSLR makes more sense than m42 lens adaption.
Feb 23, 2017 09:24:46 #
kibbles304 wrote:
Tried searching for previous discussion on this question with no luck. I purchased an M42 adapter ...?
I had a similar problem with my Nikon D5100 and several German and Russian lenses from my pre-digital years. Last week I've bought used Sony a3000 and M42 to E-mount adapter for about $250. I still in the process of evaluation, but so far I like it.
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