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Baekmann
Joined: 28 Feb 2021 Posts: 64
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Posted: Sun Oct 31, 2021 11:50 pm Post subject: Pentacon 135mm 15 blades versus 6 blades |
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Baekmann wrote:
So I compared these two lenses side by side.
Check the full video to see the pics/videos in high resolution: https://www.youtube.com/watch?v=x5oNjQYAob0
Orestor 135 f8
Pentacon 135 f8
100% crop at f8
Orestor 135 f5.6
pentacon 135 f5.6
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CarbonR
Joined: 31 Dec 2008 Posts: 1969 Location: Clermont-Ferrand, France
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Posted: Mon Nov 01, 2021 7:26 am Post subject: |
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CarbonR wrote:
Changes in bokeh (out of focus highlights) and starbursts, but there is no need for a test to know that I do not see any significant change in sharpness. _________________ Cameras : Canon 5D, Pentax K100D, Pentax 6x7, Spotmatic
Lenses : 15mm to 1000mm (24x36)
My websites : [FR & ENG]Takumar - the eyes of the Spotmatic : info about all Takumar lenses // Kogaku - My photo site
I am selling : Takumar lenses and rare Pentax bodies, pm me if you're interested in something [MFLenses feed-back]
Information on Takumar lenses with samples :
Wide angle : Takumar 15/3.5 15mm, Takumar 17/4 17mm, Takumar 18/11 18mm, Takumar 20/4.5 20mm, Takumar 24/3.5 24mm, Takumar 28/3.5 V1 28mm, Takumar 28/3.5 V2 28mm, Takumar 35/2 V1 35mm, Takumar 35/2 V2 35mm, Takumar 35/2.3 35mm, Takumar 35/3.5 35mm, Takumar 35/4 35mm
Standard : Takumar 50/1.4 V1 50mm, Takumar 50/1.4 V2 50mm, Takumar 50/3.5 50mm, Takumar 50/4 50mm, Takumar 55/2 55/1.8 55mm, Takumar 55/2.2 V1 55mm, Takumar 55/2.2 V2 55mm, Takumar 58/2 58mm, Takumar 58/2.4 58mm
Short tele : Takumar 83/1.9 83mm, Takumar 85/1.8 85/1.9 85mm, Takumar 85/1.8 85mm, Takumar 100/2 100mm, Takumar 100/3.5 100mm, Takumar 100/4 100mm, Takumar 105/2.8 V1 105mm, Takumar 105/2.8 V2 105mm, Takumar 120/2.8 120mm
Telephoto : Takumar 135/2.5 V1 135mm, Takumar 135/2.5 V2 135mm, Takumar 135/3.5 V1 135mm, Takumar 135/3.5 V2 135mm, Takumar 150/4 V1 150mm, Takumar 150/4 V2 150mm
Long tele : Takumar 200/3.5 200mm, Takumar 200/4 200mm, Takumar 200/5.6 200mm, Takumar 300/4 V1 300mm, Takumar 300/4 V2 300mm, Takumar 300/4 V3 300mm, Takumar 300/6.3 300mm, Takumar 400/5.6 400mm, Takumar 500/4.5 500mm, Takumar 500/5 500mm, Takumar 1000/8 V1 1000mm, Takumar 1000/8 V2 1000mm
Zoom : Zoom-Takumar 45~125/4 , Zoom-Takumar 70~150/4.5 , Zoom-Takumar 85~210/4.5 , Zoom-Takumar 135~600/6.7
Achromatic : Ultra-Achromatic-Takumar 85/4.5 , Ultra-Achromatic-Takumar 300/5.6 300mm |
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D1N0
Joined: 07 Aug 2012 Posts: 2483
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Posted: Mon Nov 01, 2021 9:52 am Post subject: |
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D1N0 wrote:
The more modern coatings of the Pentacon also show. Better contrast. _________________ pentaxian |
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CarbonR
Joined: 31 Dec 2008 Posts: 1969 Location: Clermont-Ferrand, France
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Posted: Mon Nov 01, 2021 11:37 am Post subject: |
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CarbonR wrote:
Contrast (also colors, vignetting) can be improved/corrected in post production, either digital or analog, so this is not a decisive point for me. Okay it is more confortable to have something good right from the lens, but this is something than can be corrected so this does not impeach a lens to deliver good results.
Sharpness is intermediate, like some aberrations (distorsion, Coma) : you can improve it only in digital and it has some limits, you cannot transform a poor lens into a keeper.
Bokeh, starbursts, flare resistance are not post processable (and I personaly dislike 6-blades lenses for both their starbursts and out of focus highlights), so this is more important to have something that we like and/or that we easily handle. _________________ Cameras : Canon 5D, Pentax K100D, Pentax 6x7, Spotmatic
Lenses : 15mm to 1000mm (24x36)
My websites : [FR & ENG]Takumar - the eyes of the Spotmatic : info about all Takumar lenses // Kogaku - My photo site
I am selling : Takumar lenses and rare Pentax bodies, pm me if you're interested in something [MFLenses feed-back]
Information on Takumar lenses with samples :
Wide angle : Takumar 15/3.5 15mm, Takumar 17/4 17mm, Takumar 18/11 18mm, Takumar 20/4.5 20mm, Takumar 24/3.5 24mm, Takumar 28/3.5 V1 28mm, Takumar 28/3.5 V2 28mm, Takumar 35/2 V1 35mm, Takumar 35/2 V2 35mm, Takumar 35/2.3 35mm, Takumar 35/3.5 35mm, Takumar 35/4 35mm
Standard : Takumar 50/1.4 V1 50mm, Takumar 50/1.4 V2 50mm, Takumar 50/3.5 50mm, Takumar 50/4 50mm, Takumar 55/2 55/1.8 55mm, Takumar 55/2.2 V1 55mm, Takumar 55/2.2 V2 55mm, Takumar 58/2 58mm, Takumar 58/2.4 58mm
Short tele : Takumar 83/1.9 83mm, Takumar 85/1.8 85/1.9 85mm, Takumar 85/1.8 85mm, Takumar 100/2 100mm, Takumar 100/3.5 100mm, Takumar 100/4 100mm, Takumar 105/2.8 V1 105mm, Takumar 105/2.8 V2 105mm, Takumar 120/2.8 120mm
Telephoto : Takumar 135/2.5 V1 135mm, Takumar 135/2.5 V2 135mm, Takumar 135/3.5 V1 135mm, Takumar 135/3.5 V2 135mm, Takumar 150/4 V1 150mm, Takumar 150/4 V2 150mm
Long tele : Takumar 200/3.5 200mm, Takumar 200/4 200mm, Takumar 200/5.6 200mm, Takumar 300/4 V1 300mm, Takumar 300/4 V2 300mm, Takumar 300/4 V3 300mm, Takumar 300/6.3 300mm, Takumar 400/5.6 400mm, Takumar 500/4.5 500mm, Takumar 500/5 500mm, Takumar 1000/8 V1 1000mm, Takumar 1000/8 V2 1000mm
Zoom : Zoom-Takumar 45~125/4 , Zoom-Takumar 70~150/4.5 , Zoom-Takumar 85~210/4.5 , Zoom-Takumar 135~600/6.7
Achromatic : Ultra-Achromatic-Takumar 85/4.5 , Ultra-Achromatic-Takumar 300/5.6 300mm |
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caspert79
Joined: 31 Oct 2010 Posts: 2901 Location: The Netherlands
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Posted: Mon Nov 01, 2021 12:44 pm Post subject: |
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caspert79 wrote:
The main reason for me to buy this lens would be the almost perfectly round aperture, despite the later version having better coatings. |
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D1N0
Joined: 07 Aug 2012 Posts: 2483
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Posted: Mon Nov 01, 2021 1:11 pm Post subject: |
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D1N0 wrote:
For portraiture I think the lower contrast and less saturation of old single coated lenses is better. _________________ pentaxian |
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Alun Thomas
Joined: 20 Aug 2018 Posts: 614 Location: New Zealand
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Posted: Mon Nov 01, 2021 4:05 pm Post subject: |
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Alun Thomas wrote:
I have both versions, I purchased the later, 6 blade version, for a small price, to see if it's possible to put the glass from that into the 15 blade version. It is, with the exception of the inner lens of the rear group, which is glued into the threaded holder, and the thread size is different than in the later version. All other elements were identically sized. |
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Pancolart
Joined: 04 Feb 2008 Posts: 3693 Location: Slovenia, EU
Expire: 2013-11-18
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Posted: Mon Nov 01, 2021 4:51 pm Post subject: |
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Pancolart wrote:
caspert79 wrote: |
The main reason for me to buy this lens would be the almost perfectly round aperture, despite the later version having better coatings. |
+1 and lens design (seriously thick, cemented elements in front, both versions that is) _________________ ---------------------------------
The Peculiar Apparatus Of Victorian Steampunk Photography: 100+ Genuine Steampunk Camera Designs https://www.amazon.com/dp/B0B92829NS |
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KEO
Joined: 27 Sep 2018 Posts: 756 Location: USA
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Posted: Tue Nov 02, 2021 7:02 pm Post subject: |
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KEO wrote:
Alun Thomas wrote: |
I have both versions, I purchased the later, 6 blade version, for a small price, to see if it's possible to put the glass from that into the 15 blade version. It is, with the exception of the inner lens of the rear group, which is glued into the threaded holder, and the thread size is different than in the later version. All other elements were identically sized. |
That's a great idea. Well done.
It's kind of a shame they put a 6-bladed aperture on later versions of that lens. |
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Pancolart
Joined: 04 Feb 2008 Posts: 3693 Location: Slovenia, EU
Expire: 2013-11-18
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Posted: Wed Nov 03, 2021 7:41 am Post subject: |
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Pancolart wrote:
KEO wrote: |
Alun Thomas wrote: |
I have both versions, I purchased the later, 6 blade version, for a small price, to see if it's possible to put the glass from that into the 15 blade version. It is, with the exception of the inner lens of the rear group, which is glued into the threaded holder, and the thread size is different than in the later version. All other elements were identically sized. |
That's a great idea. Well done.
It's kind of a shame they put a 6-bladed aperture on later versions of that lens. |
Please include Prakticar version in this idea. _________________ ---------------------------------
The Peculiar Apparatus Of Victorian Steampunk Photography: 100+ Genuine Steampunk Camera Designs https://www.amazon.com/dp/B0B92829NS |
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Oldhand
Joined: 01 Apr 2013 Posts: 6006 Location: Mid North Coast NSW - Australia
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Posted: Thu Nov 04, 2021 9:01 am Post subject: |
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Oldhand wrote:
Pancolart wrote: |
KEO wrote: |
Alun Thomas wrote: |
I have both versions, I purchased the later, 6 blade version, for a small price, to see if it's possible to put the glass from that into the 15 blade version. It is, with the exception of the inner lens of the rear group, which is glued into the threaded holder, and the thread size is different than in the later version. All other elements were identically sized. |
That's a great idea. Well done.
It's kind of a shame they put a 6-bladed aperture on later versions of that lens. |
Please include Prakticar version in this idea. |
I don't have either of the other two lenses, only the Prakticar Pentacon.
I'm not sure these images help, but here they are anyway.
Cheers
Tom
#1
#2
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Oldhand
Joined: 01 Apr 2013 Posts: 6006 Location: Mid North Coast NSW - Australia
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Posted: Thu Nov 04, 2021 9:02 am Post subject: |
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Oldhand wrote:
Pancolart wrote: |
KEO wrote: |
Alun Thomas wrote: |
I have both versions, I purchased the later, 6 blade version, for a small price, to see if it's possible to put the glass from that into the 15 blade version. It is, with the exception of the inner lens of the rear group, which is glued into the threaded holder, and the thread size is different than in the later version. All other elements were identically sized. |
That's a great idea. Well done.
It's kind of a shame they put a 6-bladed aperture on later versions of that lens. |
Please include Prakticar version in this idea. |
I don't have either of the other two lenses, only the Prakticar Pentacon.
I'm not sure these images help, but here they are anyway.
Cheers
Tom
#1
#2
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uddhava
Joined: 22 Aug 2012 Posts: 3071 Location: Hungary
Expire: 2021-06-21
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Posted: Thu Nov 04, 2021 12:38 pm Post subject: |
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uddhava wrote:
Nice ones!
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