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Petri info added to UV Sticky


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#1 Andrea B.

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Posted 25 June 2013 - 18:53

Here is what I have added to the UV Sticky Part Two.

Please comment on any errors or needed corrections.

Thanks !!

 

ADDED: I have edited this thread to keep it relevant. Thank you for your understanding.

And I have added an important note to the Petri entry for the Sticky.

It is in red below.

 

*****************

 

Petri

The Petri Camera Company was also known as the Kuribayashi Camera Industry.

 

Early Petri lenses were made mostly by Kyoei in an M42 mount. Next came the Petri breechlock mount lenses which were made by various manufacturers until about 1974. Petri returned to the M42 mount for about 3 years before switching to a Pentax mount for a short time until they got out of the camera business.

 

PLEASE NOTE: Given the different manufacturers of Petri lenses, we need to be aware of the possibility that not all Petris of the same focal length and speed will test the same for UV-capability. Some manufacturers may have added coatings or slightly altered the construction or design of a Petri. So readers should understand that the following comments apply only to the specific lens tested by that person.

  • 35mm f/3.5 Does very well in UV if stopped down to f/8 or more. Focus shift is small. 46mm threads. Breechlock mount. /nfoto/
  • 35mm f/3.5 Does very well in UV if stopped down to f/8 or more. Focus shift is small. 46mm threads. M42 mount. May be branded Kyoei Acall or Kuribayashi. /Infraultra/
  • 135mm f/3.5 A good all-round UV performer if stopped down to f/8 or more. Focus shift is significant, so use Live View with a UV torch to assist focusing. 52mm threads. Breechlock mount. /nfoto/
  • 200mm f/4.0 A good all-round UV performer if stopped down to f/11 or more. Focus shift is significant so use Live View with a UV torch to assist focusing. 55mm threads. Breechlock mount. /nfoto/
  • 400mm f/6.3 Can be OK for UV stopped down past f/11. Live View with UV torch. Breechlock mount. /nfoto/

Andrea B.
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#2 Alex H

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Posted 25 June 2013 - 19:17

35mm 3.5 lens branded Kyoei Acall or Kuribayashi comes in M42 or Exakta mounts only. Its usefulness for UV was discovered by Infraultra a.k.a Steve Smeed, not nfoto.

#3 nfoto

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Posted 25 June 2013 - 19:18

Nobody said I "discovered" the usefulness of these lenses?

 

What I have done is acquiring the more or less complete range of this vintage lens line and try them for UV, then post a little on that topic. They mostly exemply the good and the bad about ancient lenses used for UV; viz. they let a good deal of UV through, but have a problem casting the transmitted UV rays into a sharp UV image. Unless they are stopped down a fair number of stops. All except the 35 has significant focus shift as well, which can constitute a problem unless LV is used (and ample UV is present, so for indoor use a UV LED torch in general is recommended as a focusing aid).


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#4 Andrea B.

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Posted 25 June 2013 - 19:30

I was making an entry for the Breechlock version to get started.

 

We can also quite easily make an entry for the M42 version and note Steve for that. No problem.

 

Please remember, however, that Steve destroyed all his posts. So I really no longer have any of his info. Nevertheless we will give him a credit for the M42 version.


Andrea B.
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#5 Alex H

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Posted 25 June 2013 - 19:40

I have never came across the 35mm 3.5 lens in native breechlock mount for Petri. I either seen the 35m 2.8 version in breechlock mount, or 35mm 3.5 version in M42 or Exakta, or 35mm 3.5 offbrand noname lenses with breechlock adapter. If I missed it, I would be very grateful to see pictures of it, Björn, if it is not too difficult. Always glad to learn and stand corrected.



#6 nfoto

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Posted 25 June 2013 - 19:42

Alex: I have several Petri 35/3.5 samples in breech lock mount.(Three I think at present).  I'll snap a picture of it and post later. In fact, I standardised on this mount for "non-specialist" UV lenses to be used for my Panasonic cameras. For the 300/5.5 and 400/6.3 I replaced the breech lock mount with "F" as these lenses can be made to focus to infinity on an F camera. On he m4/3, they can utilise my special F-m43 adapter with built-in Baader U2".


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#7 Andrea B.

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Posted 25 June 2013 - 20:04

BTW, Klaus claims that the Petri Breechlock 35s do not have good UV transmission.

http://photographyof...-reflected.html

 

Well, there you go. There is always a difference of opinion.


Andrea B.
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#8 Alex H

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Posted 25 June 2013 - 20:05

Alex: I have several Petri 35/3.5 samples in breech lock mount.(Three I think at present).  I'll snap a picture of it and post later. In fact, I standardised on this mount for "non-specialist" UV lenses to be used for my Panasonic cameras. For the 300/5.5 and 400/6.3 I replaced the breech lock mount with "F" as these lenses can be made to focus to infinity on an F camera. On he m4/3, they can utilise my special F-m43 adapter with built-in Baader U2".

 

That would be very interesting to see, and will stop any confusion. I've been looking for 35mm 3.5 lenses for past several month but never came across one in Petri Breechlock mount. Of course it only means that I was not thorough enough.



#9 Andrea B.

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Posted 25 June 2013 - 20:09

Sometimes you find them sold together with the camera.

 

I saw Bjørn's breecklock Petris as they passed through my hands on their way to Norway. I like the old metal lenses. Nice weight. Feel nice to handle.


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#10 Alex H

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Posted 25 June 2013 - 20:14

Bjørn, I have seen Petri branded 400mm 6.9 lens which was identical to the one made by Tokyo Koki (= Tokina) and sold under variety of names. I wonder if the one I saw is different from Yours.

 

Andrea, the difficulty with some of these lenses are that there can be OEM and third-party lenses with the same specs, but made by different factories and to different standards, hence, giving different results. The 35mm 3.5 is probably one of the worst in this respect... Pictures of the lens itself are often better than any labelling it has.

Sometimes it is the only way to identify the lens maker.


Edited by Alex H, 25 June 2013 - 20:20 .


#11 nfoto

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Posted 25 June 2013 - 20:15

I tested the various 35 mm f/3.5 Petris against my Noflexar 35 /3.5 and whatever Klaus might claim his assertion is not borne out in practical shooting as these are if anything more UV-transparent than the Noflexar.

 

All my Petri lenses (28/3.5, 35/3.5, 55/1.8, 55/2, 135/3.5, 200/4, 300/5.5, 400/6.3) are engraved Petri and all carry the (male) breech lock mount. Most assuredly these, with the possible exception of 300 & 400, are *not* OEM and cannot easily be converted to anything else in terms of mount. If you doubt me, ask Erik Lund, who has muttered more than a few  swear words when he tried to operate on the first of the 35/3.5 I got. (he managed to salvage it of course in the end, his nick name Dr Lens is well deserved).

 

After some rummaging I found a clean Petri 35 breechlock sample and have snapped a few pics of it. Stay tuned.


Bjørn

#12 Alex H

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Posted 25 June 2013 - 20:23

Thanks Bjørn, the pictures will only help us all to understand better what we are talking about.



#13 nfoto

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Posted 25 June 2013 - 20:25

Here is the photographic evidence there indeed IS a Petri 35 mm f/3.5 lens in native Petri breechlock mount.

 

Attached File  DSC_2698.jpg   446.8KB   10 downloads

 

(I have several more samples but this was the one I managed to locate tonight)

 

Shooting with the Baader U2" filter and the broad-spectrum Panasonic GH-2 shows it captures UV exactly the same if not better than the Noflex35/3.5.

 

Another look into the front end;

 

Attached File  DSC_2700.jpg   380.95KB   11 downloads

 

This lens cost me $ 30 together with the 135 mm f/3.5 and sundry small items. Andrea acted as a proxy and saw these lenses before they were forwarded to Norway.

 

As UV goes, they apparently behave identical to the Kuribayashi and Kyoei samples I have. Nobody asserted the latter were bad for UV, did they?


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#14 Alex H

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Posted 25 June 2013 - 20:30

Thanks again. That is very interesting.

 

If I can still ask You one more question. I assume Your 400mm 6.3 Petri is different from the one in this post http://forum.mflense...=38723&start=15.



#15 nfoto

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Posted 25 June 2013 - 20:35

Alex re 400: Hard to tell. It most assuredly did not have a T-mount at its rear; neither did the 300/5.5. It was a peculiar mating surface for a shortened male breech lock mount and I had a hell of a time in removing this and adding the F-mounts to both lenses.

 

I stated earlier these two long lenses might be OEM products factory adapted to be Petris.


Bjørn

#16 Andrea B.

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Posted 25 June 2013 - 20:36

Wonder if there are any breechlock to m4/3 adapters floating about ??


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#17 nfoto

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Posted 25 June 2013 - 20:36

Probably not as I likely bought the remainder of the stock :)

 

However, making your own from a female breech lock mount and an MD Minolta-m43 adapter is not difficult.


Bjørn

#18 Alex H

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Posted 25 June 2013 - 20:52

I am grateful I learned something new today about Petri camera company.

#19 nfoto

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Posted 25 June 2013 - 20:57

There is still time to pick up such lenses for an acceptable price. Not too many on the market unfortunately, but once in a while they pop up. Often in a complete camera kit so you have to be vigilant in your search strategy. I think I located 4 or 5 during the last 6-7 months, but not all were in a condition useful for my purposes.


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#20 Erik Lund

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Posted 25 June 2013 - 21:30

No doubt the 35mm Petri lens was an original breech lock mount.

 

Yes build and design quality of the lens mechanics is horrible, it was almost impossible to rebuild the aperture assembly due to the friction between the different plates and guides.

 

I sure hope you have found samples with less wear and tear...






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