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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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Pentor 35mm f2.8 Anyone recognise this lens?
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Posted: Sat Jun 04, 2011 3:11 pm
Post subject: Pentor 35mm f2.8 Anyone recognise this lens?
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Posted: Sat Jun 04, 2011 3:11 pm
Post subject: Pentor 35mm f2.8 Anyone recognise this lens?
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I got this in a job lot and google seems to suggest that PENTOR is a branded version of CHINON lenses. Only mentions of a 100mm or a 28mm, but no mention of 35mm.

Does anyone recognise this as a CHINON?





Couple of samples taken this morning. Full set HERE









Seems reasonable on a SHORT(!) tube Smile



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Posted: Sun Jun 05, 2011 6:59 pm
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Posted: Sun Jun 05, 2011 6:59 pm
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No-one recognise this at all?? Maybe Pentor manufactured rather than badged?


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Posted: Sun Jun 05, 2011 7:38 pm
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Posted: Sun Jun 05, 2011 7:38 pm
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Pentor was used as a label for Praktica stuff from (most Japanese) other manufacturers. The Dutch importer used the names of Pentacon and Orwo to create this label.
I have a Pentor 300mm 5.6, but its design is not alike your lens.

Last edited by Minolfan on Sun Jun 05, 2011 10:56 pm; edited 1 time in total


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Posted: Sun Jun 05, 2011 8:05 pm
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Posted: Sun Jun 05, 2011 8:05 pm
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I've seen Photax Paragon lenses in this style too. And Palar.

http://forum.mflenses.com/two-film-camera-bodies-and-a-lens-t14636.html


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Posted: Mon Jun 06, 2011 12:32 am
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Posted: Mon Jun 06, 2011 12:32 am
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Pictures look quite good.


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Posted: Mon Jun 06, 2011 4:42 am
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Posted: Mon Jun 06, 2011 4:42 am
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ManualFocus-G wrote:
I've seen Photax Paragon lenses in this style too. And Palar.

http://forum.mflenses.com/two-film-camera-bodies-and-a-lens-t14636.html

That auto palalr does look extremely similar, but optical layout must be different because it's f3.5 and my pentor is f2.8???


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Posted: Mon Jun 06, 2011 4:44 am
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Posted: Mon Jun 06, 2011 4:44 am
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woodrim wrote:
Pictures look quite good.

Yes. Not hugely sharp but color and contrast seem ok and distortion and ca well under control Smile


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Posted: Mon Jun 06, 2011 6:23 am
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Posted: Mon Jun 06, 2011 6:23 am
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Minolfan wrote:
Pentor was used as a label for Praktica stuff from (most Japanese) other manufacturers. The Dutch importer used the names of Pentacon and Orwo to create this label.
I have a Pentor 300mm 5.6, but its design is not alike your lens.


Yes, I have seen references to Pentor being a Dutch concern. I know they had branded Praktica camera bodies, but from what I have seen on the net, most seem to have been sold with Pentacon or Praktica lenses, rather than anythin Pentor branded.

No-one is jumping up and claiming my lens as a CHINON though, so still no further forward with identifying the manufacturer. Lenses actually marked PENTOR certainly don't seem very common though, especially in this focal length. A half decent performer though, to my eyes.


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Posted: Thu May 03, 2012 7:04 am
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Posted: Thu May 03, 2012 7:04 am
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I'm going to pick up a Pentor 35mm f2.8 and a Pentor 135mm f2.8 this afternoon for 10 € each.
Will post some samples later.


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Posted: Thu May 03, 2012 4:48 pm
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Posted: Thu May 03, 2012 4:48 pm
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Keep an eye out for the Pentor 100/2.8 - quite good.


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Posted: Thu May 03, 2012 8:39 pm
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Posted: Thu May 03, 2012 8:39 pm
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Woodrim : will do Wink

So, the 2 lenses are in pristine condition (almost new, no wears, dust or fungus, focus really smooth). The 71 years old seller was suprised that I bought 2 lenses he had and not his Practika camera with 50mm 2.8 (or 3.5, don't remember). I said that those kind of lenses can work with nowadays DSLR.
Only one drawback for the 135mm f2.8 : thought that baldes were stuck @ 2.8 but after dissasembling (again, see my Kaleinar story Very Happy ), the problem is that one of the 2 springs that controls the blades mecanism is very tired. It seems that it's due to too many years where the lens was waiting in its box, wide open.
I can't post samples now because I thought that I had the right adapter for my Nikon body but I was wrong. Mine is a T mount adapter, close to M42 but It won't work.

So, I see many adapters on the Bay : with or without glass (for infinity focus). I red that ones with glass fix the focus infinity but glass isn't quite so good. So, many prefer without glass for better results. Now, I have to wait almost 3-4 weeks for the right adapter to come from China.

Last edited by Ghost2501 on Thu May 03, 2012 8:49 pm; edited 1 time in total


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Posted: Thu May 03, 2012 8:43 pm
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Posted: Thu May 03, 2012 8:43 pm
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ManualFocus-G wrote:
I've seen Photax Paragon lenses in this style too. And Palar.

http://forum.mflenses.com/two-film-camera-bodies-and-a-lens-t14636.html


Yes, I have two Photax / Paragon lenses - 28mm & 135mm - in very similar style, but I think mine are Cimko lenses with the asymmetric green diamond as the focusing mark - unlike the red 'thermometer' mark on this lens. But the straight knurling on the focus ring is something I've only seen on Photax / Paragon - but I could be wrong on that point.


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Posted: Mon May 14, 2012 5:23 pm
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Posted: Mon May 14, 2012 5:23 pm
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I received my M42 to Nikon adapter today (one without glass).
First test with the Pentor 35mm f2.8. Focus depth is very short (from above 30cm to 100cm max).

Test @2.8



100% crop



Test @F4.0



No post-processing, only RAW to JPEG conversion.

It's a shame that focus depth is so short. I'll give a change to a Kood adapter with glass, it seems to be the best among them.
I'll test the Pentor 135mm stuck @2.8 tomorrow but it appears that the focus range is larger than the 35mm one.


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Posted: Mon May 14, 2012 5:46 pm
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Posted: Mon May 14, 2012 5:46 pm
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Ghost2501 wrote:
I received my M42 to Nikon adapter today (one without glass).
First test with the Pentor 35mm f2.8. Focus depth is very short (from above 30cm to 100cm max).

Test @2.8
100% crop



Looks excellent! Is your lens is identical to the one in the first post?


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Posted: Mon May 14, 2012 6:00 pm
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Posted: Mon May 14, 2012 6:00 pm
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Globally, yes but :

- mine says 'Pentor Automatic 1:2.8 f=35mm' and filter diameter is 55mm.
- the focus grip is different
- the rear lens barrel is also different

I'll take a picture soon.


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Posted: Tue May 15, 2012 4:13 pm
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Posted: Tue May 15, 2012 4:13 pm
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Here it is :







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Posted: Wed May 16, 2012 5:51 pm
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Posted: Wed May 16, 2012 5:51 pm
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Fast samples of the Pentor 135mm f2.8 (mine is in mint condition but stucked @f2.Cool. It's funny because compared to his little 35mm brother, focus ring is inverted.

My Cat


Hobocat


Hobocat 100% crop


Good colour saturation but a little soft wide open et some CA. Will be a good paper weight Very Happy


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Posted: Wed May 16, 2012 6:41 pm
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Posted: Wed May 16, 2012 6:41 pm
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This lens is part of made in Korea series: http://forum.mflenses.com/lenses-from-korea-t48723.html


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Posted: Tue Jun 05, 2012 8:31 am
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Posted: Tue Jun 05, 2012 8:31 am
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Exactly the same as the Revuenon:
http://forum.mflenses.com/revuenon-spezial-12-8-f35mm-made-in-japan-t6882.html
Just the beauty ring is different, it says Pentor and not Revuenon.

Btw, I like this lens. (Have the Revuenon.)
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