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Optics Theory - This forum is aimed towards the TECHNICAL side of photographic OPTICS THEORY. There will be some overlap by camera/manufacturer, but this forum is for the heavy duty tech discussions. This is NOT the place to discuss a specific lens or lens line, do that in the appropriate forum. This is the forum to discuss optics or lenses in general, to learn about the tech behind the lenses and images. IF you have a question about a specific lens, post it in the forum about that type of camera, NOT HERE.

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Old 04-25-2012   #1451
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Quote:
Originally Posted by philosomatographer View Post
Time and Space

(Schneider-Kreuznach APO-Symmar 150mm f/5.6, 4x5in Ilford HP5 film, Linhof Technika)
A photo speaks more than a thousand words
Your post before could have easily understood as a Leica rant, but backing it with this beauty of bokeh makes your point clear.

I fear though, the issue with bokeh is not a Leica made one, but generally a smaller format issue.
Only when one goes the efforts, to use the fastest of lenses or specific designs, that make background smooth, like the latest ASPH 50/1.4, 75/2 or, as you stated certain slower lenses (a 135/3.4 APO can do real magic in this regard), you will get smooth bokeh, as you like.

For some though, certain specialty lenses have something going for them for their crazy bokeh (take the 50/1.5 Summarit for example or in a milder dose the 50/2 Summitar, ).

I love the Leica stuff, but in regards of truly outstanding background rendering, it is limited to certain special lenses (unfortunately those are getting costly nowadays) or to move to a larger film format entirely.

But then again, isn't it sometimes the flaws, that we feel so dearly about something, that makes them unique and special ;-) ?
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Old 04-25-2012   #1452
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Quote:
Originally Posted by menos View Post
I am really digging the 5cm 3.5 Elmar, since I found out about it's beautiful, beautiful, soft bokeh - watch that background far away (especially the transitions from bright sky to dark background - modern lenses murder any beauty in such things)!
Well, not all the modern lenses! I think this adds to my earlier post - slower lenses have smoother bokeh. One of the highest-performance, modern lenses for 35mm is the Heliar 50mm f/3.5, and it has exactly this gentle manner that you speak of in the 5cm Elmar of old (which the Helier also somewhat copies in physical style - Cosina's inspiration was clearly the old Elmar):




(both, Heliar 50mm at f/3.5, Kodak TMY400-2)
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Old 04-25-2012   #1453
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Quote:
Originally Posted by menos View Post
A photo speaks more than a thousand words
Your post before could have easily understood as a Leica rant, but backing it with this beauty of bokeh makes your point clear.
Thank you! I am trying to make a double-point with the image above: The modern APO-Symmar is quite Leica-like in all respects - flawless optical performance, german (just kidding..! but some people make blanket statements about "german" vs "japanese" glass, etc), but (relatively, for LF) harsh bokeh - much earlier in this thread I posted a more severe example. Yet, the low magnification due to the large film format, together with the "relaxed" f/5.6 design - no need to try and perform miracles focusing light rays through an f/2.0 or f/1.4 hole - means that it still looks better than most 35mm lenses.

Across an entire lens range though, I would have to say my C-series Mamiya RB67 lenses have the most universally perfect bokeh. I have never seen harshness there, from wide-angle to telephoto. Truly perfect most of the time, even the ber-corrected ones like the 140mm Macro:



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Old 04-29-2012   #1454
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Summar:

http://www.flickr.com/photos/cannelbrae/6834334367

Yashinon 5cm 1.8

http://www.flickr.com/photos/cannelbrae/6586918557

Canon 100mm 3.5

http://www.flickr.com/photos/cannelbrae/6616022907
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Old 05-02-2012   #1455
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Some more examples of large-format rangefinder bokeh:

Look over the edge

(Nikkor-T*ED 360mm f/8, 25-years-expired Ilford FP4+, Linhof Technika V)

Bedside Vision

(Schneider-Kreuznach APO_Symmar 150mm f/5.6, 25-years-expired Ilford FP4+, Linhof Technika V)
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Old 05-06-2012   #1456
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Old 05-06-2012   #1457
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Old 05-06-2012   #1458
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Old 05-06-2012   #1459
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Old 05-06-2012   #1460
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Old 05-06-2012   #1461
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Old 05-06-2012   #1462
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Old 05-06-2012   #1463
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Old 05-06-2012   #1464
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Old 05-06-2012   #1465
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Old 05-06-2012   #1466
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Old 05-06-2012   #1467
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Old 05-06-2012   #1468
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Old 05-06-2012   #1469
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Old 05-06-2012   #1470
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Old 05-06-2012   #1471
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Old 05-06-2012   #1472
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Old 05-06-2012   #1473
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Old 05-06-2012   #1474
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Old 05-06-2012   #1475
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