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Meyer-Optik Trioplan adapted for digital

Posted: Sun Apr 24, 2016 11:22 am
by melek
trioplan_attached.jpg
On Friday, I decided to take the Trioplan from an old Pentacon Pentona that I planned to bin and see if I could use it for digital.

Briefly, I fit it to an M-mount lens adapter and made a few modifications with a Dremel.

I was very happy with the results.

ยป Here is my writeup, a video and some sample photos.
DSC02589.jpg

Re: Meyer-Optik Trioplan adapted for digital

Posted: Sun Apr 24, 2016 8:02 pm
by Philip
Nice job! And, yes, that out-of-focus stuff is lovely on this lens.

Re: Meyer-Optik Trioplan adapted for digital

Posted: Mon Apr 25, 2016 9:23 pm
by Julio1fer
Nice project. It is refreshing to find that digital cameras may have a purpose in life.

Re: Meyer-Optik Trioplan adapted for digital

Posted: Tue Apr 26, 2016 8:13 pm
by PFMcFarland
At the rate companies keep dropping film types, we may all have to resort to this sooner than later.

PF

Re: Meyer-Optik Trioplan adapted for digital

Posted: Tue May 17, 2016 1:30 pm
by TobaccorRoad
I have two Meyer-Optik lenses, a 100mm and a 250mm with Exakta mounts. I bought an adapter to fit them on a Canon EF mount. I haven't taken them out for any real shooting yet. But, just from my front door they do well.

Re: Meyer-Optik Trioplan adapted for digital

Posted: Sat Aug 17, 2019 1:03 pm
by GrahamS
Nice job, Mike. How about showing us something a bit more colourful, if you can?

Re: Meyer-Optik Trioplan adapted for digital

Posted: Sat Aug 17, 2019 1:38 pm
by melek
Last year, I took it up to New York City, attached to the Sony A7 II. It was a very dreary day and rained most of the time that I was out.
a7II_trioplan_01.jpg
I'm still pondering putting it back on the work bench and using the Dremel to remove the square corners.
a7II_trioplan_02.jpg
a7II_trioplan_03.jpg
a7II_trioplan_04.jpg
a7II_trioplan_05.jpg
a7II_trioplan_06.jpg
Wide open, it's sharp in the middle but shows a lot of Tessar-like roundness to the out-of-focus areas. Stopped down, it's reasonably sharp across the frame, once you get to f/8 or f/11. You can see how this lens tends to vignette wide open.
a7II_trioplan_07.jpg
It is not a perfect lens, which is what makes it so interesting.

Re: Meyer-Optik Trioplan adapted for digital

Posted: Sat Aug 17, 2019 1:59 pm
by GrahamS
Very interesting, thanks Mike. The bokeh seems to be very smooth. Colour rendition is also good.

Re: Meyer-Optik Trioplan adapted for digital

Posted: Sun Aug 18, 2019 12:05 am
by PFMcFarland
Rounded, but not swirly. Good.

PF

Re: Meyer-Optik Trioplan adapted for digital

Posted: Sun Aug 18, 2019 2:25 pm
by Julio1fer
A great project.