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Silly quiz: what's this Trioplan alternative?
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PostPosted: Sat Jun 18, 2016 1:33 pm    Post subject: Reply with quote

planet.groove wrote:
ok, inspired by this thread i tested both today.

the Bonotar produces bubbles, but no soap bubbles....


Yes, bubbles but not soap bubbles.
I am testing other lenses, including a black (last version) Enna f/2,8 135mm, so I still have to test the OOF rendition of the Bonotar.
There are a few out of focus shots taken at the same concert, that show how the Bonotar renders the highlights of the chromed string pegs of a dobro guitar.
The pic is ugly... and i've cropped it showing only an orribly out of focus area. I post it just to show the highlights:

IMGP1757 by spaulein, on Flickr


The signature of the Domiplan is much better than i thought.
I have one in M42, with problematic diaphragm blades. I never thought to fix it cause i thought it was not worth the time/effort.
I'm reconsidering.
I want to try it with a cheap M42 x2 converter... Smile

Re: Trioplan soap bubble bokeh, i've decided that it should be fun to give it a try.
I just found a relatively cheap Pentacon AV f/2,8 80mm projection lens (a pity it's plasticky, i'd prefer the all-metal ones marked Meyer), and i already have a couple of Trioplans (50mm and 75mm) set in leaf shutters.
I decided to invest time, effort and some money, to adapt them to M42 or PK mounts, using a cheap chinese focusing helicoid.
Unfortunately #00 shutters don't have a lever to keep the shutter blades open. A shutter cable with lock screw is needed... not very practical indeed!

cheers

Paolo