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Meyer-Optik DIAPLAN 100/3.5 converted to M42 + Sony A7R
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PostPosted: Thu Apr 28, 2016 8:27 am    Post subject: Meyer-Optik DIAPLAN 100/3.5 converted to M42 + Sony A7R Reply with quote

It's a projection lens that I converted to M42 mount:



It renders in vintage style and is sharp enough. A little bit of Trioplan bubbly bokeh is possible.
Samples from Sony A7R, without post-processing (besides resizing):





PostPosted: Thu Apr 28, 2016 3:57 pm    Post subject: Reply with quote

Nice. Especially like the bokeh. Is it a difficult conversion?


PostPosted: Thu Apr 28, 2016 4:27 pm    Post subject: Reply with quote

The aluminum ring is dedicated for this conversion and made on lathe. In order to focus infnity you also need to shorten the plastic "tube" which lens is in. In a word - it's easy if you have proper machine and craftman, impossible if you have none.


PostPosted: Mon Oct 24, 2016 3:32 pm    Post subject: Reply with quote

Do you think sharper or less glow than the f/2.8?


PostPosted: Mon Oct 24, 2016 6:28 pm    Post subject: Reply with quote

It's sharper, but f/2.8 renders intense bubbly bokeh, like Trioplan 100/2.8. They're not competitors.