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07-29-2010, 12:36 PM   #1
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Should I get a Pentacon 135mm 15 blade?

What happened to the cheap 135mm lenses? I want to get a lens which gives me dreamy bokeh for doing outdoor portraits. The preset version was supposed to be cheap. Are the prices on ebay inflated and stupid people are buying?If not then what other lens?$50

07-29-2010, 02:02 PM   #2
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The Super Takumar 135mm F3.5 is cheap- $38 on average.

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07-29-2010, 02:38 PM   #3
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QuoteOriginally posted by Adam Quote
The Super Takumar 135mm F3.5 is cheap- $38 on average.
Will that give me dreamy bokeh like the pentacon 15 blade?
07-29-2010, 03:57 PM   #4
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I have a Tele-Lentar 135mm F2.8 with 15 blades. Look in the 135mm lens club for shots comparing it to a smc tak 135 f3.5

The thing I like the most is that it appears to have better isolation or foreground and background than the tak

07-29-2010, 04:41 PM   #5
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Lowell,
I found one on ebay cheap but it didn't state the mount type. Are all 135mm Lentar m42 or are some exakta, etc which can't be k adapted?
07-29-2010, 05:11 PM   #6
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US$50 for GDR Pentacon with 15 blade diaphragm in good condition is about right. Note I wrote 'good condition'; i.e. excellent optics with no signs of fungus attack of coatings or cleaning marks. With oily diaphragm or stiff focus ring doesn't matter performance-wise. As you have seen from example photos, results are like no other lens. Nearest competitor is Zeiss Sonnar 2.8/135, for about 2x the $.
07-29-2010, 05:27 PM   #7
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rhodopsin,
I just wish I could find one for that price. It seems the prices are way too high. I think it's the economy. Someone finds their grand dad's old camera gear in the attic and hopes they struck gold.
07-29-2010, 05:52 PM   #8
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I dunno if the pricing of the Pentacon is supposed to be around $50 or less. although I see them being sold on average for $100 dollars. my copy is an earlier version single-coated 15-bladed m42 Pentacon which I believe are the first copies that came out after they were rebadged formerly as the Meyer Orestor. I paid mine for $120 which I believe is fair considering it's cult status, rarity and capability. it's different than the CZ 135mm, Pentax 135mm and other lenses. it renders differently although I must say that the CZ and Pentax's bokeh are very nice as well. they can be really smooth as well.

as far as image rendering differences are concerned, the colors produced by the Pentacon are vivid/soft cool and has a glossy rendering to the images. sort of a draw and paint. bokeh is smooth and superb IMO. but renders the subject more isolated to an extent.


Last edited by Pentaxor; 07-29-2010 at 06:03 PM.
07-29-2010, 05:54 PM   #9
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Would a Helios auto 135mm f2.8 in m42 be the same as a Zeiss 135mm?
07-29-2010, 06:01 PM   #10
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QuoteOriginally posted by troglodyte Quote
Would a Helios auto 135mm f2.8 in m42 be the same as a Zeiss 135mm?
not really.
07-29-2010, 06:08 PM   #11
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here is an illustration of an image taken by a Pentacon that I was talking about.

07-29-2010, 06:17 PM   #12
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Pentaxor,
The preset version has that look at all apertures? Whereas the auto and electric only at 2.8? My other worry is I've never used a non-mc. Will the preset single coat look dull in not optimum light compared to the auto or electric with mc?
07-29-2010, 09:59 PM   #13
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QuoteOriginally posted by troglodyte Quote
Pentaxor,
The preset version has that look at all apertures? Whereas the auto and electric only at 2.8? My other worry is I've never used a non-mc. Will the preset single coat look dull in not optimum light compared to the auto or electric with mc?
what do you mean that look? if you meant the bokeh, the quality of it is still great but as you know, the DOF would start to kick in as you stop down. although the quality of the bokeh IMO is still great.


as far as the difference between the auto/electric Pentacon and the preset, the differences would be the advantage of controlling open aperture at small adjustments and circular OOF highlights at small apertures for the preset. while the auto/electric would be a bit more contrast due to it being MC. but I can't reassure the differences in image quality or which is better since I don't have the electric version for comparison.

what I can say though with the preset is that all you need is a good lens hood and you should be fine.
07-30-2010, 12:20 AM   #14
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Meyer Optik were integrated into Pentacon so Pentacons are the later lens. $100 sounds ok for a reasonable copy. The price is dictated by market place demand.
I have both the Pentacon and Meyer Optik presets which I quite like.
07-30-2010, 06:36 AM   #15
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Example of Pentacon with coating damage. Some effect on IQ, but for US$35, a great deal imho:

Manual Focus Lenses :: View topic - Pentacon oil?

Example of GDR Pentacon 2.8/135 Auto MC (not 15-blade version) wide open:

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