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Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.

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Question about Meyer Trioplan 100/2.8
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Posted: Wed Sep 28, 2011 7:13 pm
Post subject: Question about Meyer Trioplan 100/2.8
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Posted: Wed Sep 28, 2011 7:13 pm
Post subject: Question about Meyer Trioplan 100/2.8
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What's the different between the Trioplan 100/2.8 and Trioplan N 100/2.8?

All I know is the number of blades are different between the two..... Embarassed


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Posted: Wed Sep 28, 2011 7:17 pm
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Posted: Wed Sep 28, 2011 7:17 pm
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They have different optical scheme and different looking too.
Trioplan 100 silver is a manual lens available with M42 and Exakta mount and in some special case it has unique bokeh.

Trioplan 100N has only Exakta version it as a manual/auto lens with Exakta bulb. Optical quality is excellent, different than other , more looks like other good 100mm lenses.

http://www.mflenses.com/gallery/v/german/meyer/trioplan_100mm_f2_8/

http://www.mflenses.com/gallery/v/german/meyer/trioplan_100mm_f2_8_exa/

Last edited by Attila on Wed Sep 28, 2011 8:43 pm; edited 1 time in total


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Posted: Wed Sep 28, 2011 7:21 pm
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Posted: Wed Sep 28, 2011 7:21 pm
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From my tests, optical scheme is probably the same. Difference is only mechanical and number of aperture blades.


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Posted: Wed Sep 28, 2011 7:56 pm
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Posted: Wed Sep 28, 2011 7:56 pm
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My N has only 6 straight aperture blades


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Posted: Wed Sep 28, 2011 8:35 pm
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Posted: Wed Sep 28, 2011 8:35 pm
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My experience matches Attila's i.e. the N version is sharper and without the crazy bokeh.


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Posted: Wed Sep 28, 2011 9:01 pm
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Posted: Wed Sep 28, 2011 9:01 pm
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BRunner wrote:
From my tests, optical scheme is probably the same. Difference is only mechanical and number of aperture blades.


So you have the pronounced soap bubble bokeh with the N version too (when used wideopen)?


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Posted: Wed Sep 28, 2011 9:50 pm
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Posted: Wed Sep 28, 2011 9:50 pm
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Here is my older comparison (my contrast torture test) on crop camera. Wide open, bokeh looks same for all versions. Just for comparison, I added Pentacon 2.8/100. Except contrast, I don't see any difference between the tree Trioplans. Stopped down bokeh of N version is ruined by 6 blades aperture.

@f2.8 old EXA V 120xxxx


@f2.8 M42 without V 256xxxx


@f2.8 EXA N 351xxxx


@f2.8 Pentacon 2.8/100


Stopped down:

@f5.6 old EXA V 120xxxx


@f5.6 M42 without V 256xxxx


@f5.6 EXA N 351xxxx


@f5.6 Pentacon 2.8/100


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Posted: Wed Sep 28, 2011 9:54 pm
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Posted: Wed Sep 28, 2011 9:54 pm
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Not in every shooting situation get unique bokeh , rendering from a Trioplan lens.


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Posted: Wed Sep 28, 2011 10:04 pm
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Posted: Wed Sep 28, 2011 10:04 pm
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I don't understand Attila. All Trioplans show typical edged bokeh with flare wide-open. Pentacon is much smoother with very well suppressed flare (best Meyer lens ever made for me).


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Posted: Thu Sep 29, 2011 7:55 am
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Posted: Thu Sep 29, 2011 7:55 am
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Thank you BRrunner!
Seems like all Meyer Trioplan 100/2.8 versions have this bokeh rendering style - used wideopen.


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Posted: Thu Sep 29, 2011 8:17 am
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Posted: Thu Sep 29, 2011 8:17 am
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Great comparison shots BRunner. Thanks for sharing.


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Posted: Thu Sep 29, 2011 10:06 am
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Posted: Thu Sep 29, 2011 10:06 am
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Yes, that 100mm Pentacon just sat me down though i was sitting already Smile. You obviously have great copy.


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Posted: Fri Sep 30, 2011 1:21 am
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Posted: Fri Sep 30, 2011 1:21 am
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Thanks BRunner...... Very Happy Very Happy Very Happy


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Posted: Fri Sep 30, 2011 11:54 am
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Posted: Fri Sep 30, 2011 11:54 am
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+1, Interesting comparison thank-you BRunner. I note the dramatic improvement in multi-coating, increasing contrast, though the actual sharpness is quite similar between them. Contrast affects perception of sharpness. Once contrast is restored to shots taken with older Trioplan, I guess it would appear much closer in this regard. If you feel up to it, perhaps show a 100% crop from Pentacon and M42, and try a sample with contrast (only) corrected with M42 - I'd be curious to see it.

The bokeh on the Pentacon is more even - smoother - in its edge highlighting, without the very fine, strong outlining. Ironically, as much stronger as it seems the Pentacon appears for general picture taking, it looks less interesting to me from a character stand-point. Much more normal, but to me this makes it compete with a lot of modern lenses available.

K.

Last edited by thePiRaTE!! on Fri Sep 30, 2011 12:00 pm; edited 2 times in total


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Posted: Fri Sep 30, 2011 11:57 am
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Posted: Fri Sep 30, 2011 11:57 am
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Pancolart wrote:
Yes, that 100mm Pentacon just sat me down though i was sitting already Smile. You obviously have great copy.

I have three copies. Two auto Pentacon versions, and one older Meyer preset 12 blade version and all perform equally well.


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Posted: Fri Sep 30, 2011 12:22 pm
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Posted: Fri Sep 30, 2011 12:22 pm
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BRunner wrote:
Pancolart wrote:
Yes, that 100mm Pentacon just sat me down though i was sitting already Smile. You obviously have great copy.

I have three copies. Two auto Pentacon versions, and one older Meyer preset 12 blade version and all perform equally well.


+1
I have/had several copies too, all works fine same way. Built quality is very low , many of my lenses have faulties, but optical quality is first class.


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Posted: Fri Sep 30, 2011 2:54 pm
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Posted: Fri Sep 30, 2011 2:54 pm
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does anyone know what years these lens were made in? is the aluminium version older than the black one?


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Posted: Fri Sep 30, 2011 7:16 pm
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Posted: Fri Sep 30, 2011 7:16 pm
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yes, the black ones were made much later.


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Posted: Fri Sep 30, 2011 8:06 pm
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Posted: Fri Sep 30, 2011 8:06 pm
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My word, that Pentacon is stunning!
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