Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-21-2017, 01:54 AM   #466
Pentaxian
aurele's Avatar

Join Date: Jan 2011
Location: Paris, France
Photos: Albums
Posts: 3,172
Incredible job ! congratulation !

QuoteOriginally posted by dcshooter Quote
Here's one I had started a mod on a while back and only recently finished. Working on the mount was a major pain, requiring a good amount of machining.





X-posted to the Gear Porn thread.

Not quite as well known as it's 58mm sibling, but to my eye, sharper with a more modern rendering.

Requisite Kitty picture to show performance:


100% crop:


07-21-2017, 05:00 AM   #467
Loyal Site Supporter
Loyal Site Supporter
ivanvernon's Avatar

Join Date: Oct 2012
Location: Medina, OH
Photos: Albums
Posts: 3,271
QuoteOriginally posted by kacansas03 Quote
Anyone know what the Pentacon 6 mount was? I thought it was for a 60x60 medium format camera. If that is wrong what eastern Bloc camera was medium format?
Here is pretty much the full story. Kiev used it and made plenty of medium format cameras.
06-17-2018, 08:37 AM   #468
Forum Member




Join Date: Mar 2015
Posts: 64
QuoteOriginally posted by MattGunn Quote
After a few weekends work in the shed I have got my latest lens conversion to the point where it can be tested. The lens (shown a few posts back with a super takumar 50mm f1.4 for scale) is a Wray 36"f/6.3 reconnaissence lens which I believe dates from the 1940s. Apparently these were originally used for arial reconnaissence taking images on large format negatives (10"X8" I believe).

The attached photos bellow show the construction and the finished lens.

The first photo shows the component parts of the lens. These consist of:
The lens
A margarine tub lid (found to be exactly the right size to be used as a lens cap),
A clear plastic flange for bolting to the lens (built up from two hand sawn disks of 12mm plastic),
A plant pot with the bottom cut out (for building up the glassfiber section),
A plastic amunition transport case (salvaged on its way to a skip!)

The second photo shows the first stages of the build.
The glassfiber section has been built up around the plant pot with the plastic flange as an integral part of it. This was built up around the green plastic case to get a good fit and a layer of cling film was used as a release agent to prevent it sticking. An old bellows unit has been modified so it can be used as a focus mechanism and the mount for this has been bolted into the end of the green plastic case.

The third photo shows the above parts push fitted to show the assembly. After this photo was taken the wide end of the green plastic casing was cut of and the whole lens was trial assembled (push fitted only). Once it was dark I took it outside to find the infinity focus position using the moon as a target. Once this was found screw holes to hold everything together were drilled and more glassfiber and filler were added to the front section and sanded back to get a good finish. The glassfiber section was then painted and the inside of the green tube was lined with black paper to reduce scattered light.

The final phot shows the completed lens assembly mounted on a very heavy duty tripod (this thing is really heavy) with the Samsung GX20 mounted on the back. The tripod mount is right under the ballence point of the lens with the camera on the back. As the GX20 waights about half a kilogram you can imagine how much the lens must weigh for it to ballance as it is!

The lens is by no means finished and some work still needs to be done to improve the image quality and rigidity etc. I will post some photos taken with this once I have had a chance to sort them out.
By far the coolest thing I have ever seen.
10-27-2018, 11:16 AM   #469
New Member




Join Date: Oct 2018
Posts: 3
QuoteOriginally posted by Jean Poitiers Quote
CZ Planar 50/1.8 in Rollei QMB mount (wide open) ... it will (force) fit ever so nicely on a PK, but nothing past 1.5m due to registration difference ... OK by me, I like to shoot close. Got it for a song at a swap along with the Voigtlander in Rollei QMB, but it does not fit as well ... note the spider's web.



@ about f2.8 ...


Monsieur Poitier, je vais vous envouyez une question par PM concernant le Cardinar.

10-27-2018, 11:19 AM   #470
New Member




Join Date: Oct 2018
Posts: 3
QuoteOriginally posted by Jean Poitiers Quote
CZ Planar 50/1.8 in Rollei QMB mount (wide open) ... it will (force) fit ever so nicely on a PK, but nothing past 1.5m due to registration difference ... OK by me, I like to shoot close. Got it for a song at a swap along with the Voigtlander in Rollei QMB, but it does not fit as well ... note the spider's web.



@ about f2.8 ...


Bonsoir monsieur Poitiers,

J'ai vu que vous avez d'experience avec l'objetif "Cardinar" (Werra-mount), que vous avez convertez par Pentax.
Moi j'ai achetez une Cardinar en tres belle etat! Hélas, je n'ai aucune idee pour le converter par une autre camera. Moi j'au uneNikon. Pouvez vous m' aider par la conversion, je na sais d'ou commencer? Je suppose que ca sera similaire avec votre Cardinar, sauf que je dois adapter a Nikon.
Merci d'avance, et bien à vous.

QuoteOriginally posted by carlthellama Quote
By far the coolest thing I have ever seen.
Good evening Mr. Poitiers,

I saw that you have experience with the lens "Cardinar" (Werra-mount), which you have converted to Pentax.
I bought a Cardinar in very good condition! Unfortunatley, I have no idea how to convert it to another camera. I'm at Nikon. Can you help me by conversion, I do not know where to start? I guess it will be similar with your Cardinar, except that I have to adapt to Nikon.
Thank you in advance, and good to you.

Last edited by Racer X 69; 10-27-2018 at 12:46 PM.
10-30-2018, 09:10 AM   #471
Site Supporter
Site Supporter
Jean Poitiers's Avatar

Join Date: Apr 2011
Location: Lost in translation ...
Photos: Gallery | Albums
Posts: 17,316
QuoteOriginally posted by DimiTator Quote
Bonsoir monsieur Poitiers,

J'ai vu que vous avez d'experience avec l'objetif "Cardinar" (Werra-mount), que vous avez convertez par Pentax.
Moi j'ai achetez une Cardinar en tres belle etat! Hélas, je n'ai aucune idee pour le converter par une autre camera. Moi j'au uneNikon. Pouvez vous m' aider par la conversion, je na sais d'ou commencer? Je suppose que ca sera similaire avec votre Cardinar, sauf que je dois adapter a Nikon.
Merci d'avance, et bien à vous.


Good evening Mr. Poitiers,

I saw that you have experience with the lens "Cardinar" (Werra-mount), which you have converted to Pentax.
I bought a Cardinar in very good condition! Unfortunatley, I have no idea how to convert it to another camera. I'm at Nikon. Can you help me by conversion, I do not know where to start? I guess it will be similar with your Cardinar, except that I have to adapt to Nikon.
Thank you in advance, and good to you.
Bonjour,

I am an American living in France and I prefer to answer in English ... and here so that everyone can benefit from the information.

What I have used is a cheap set of Chinese extension tubes for a K-mount ... the Cardinar lens will fit snugly inside the opening of the K-mount front tube and behind that I used "hard" felt material to secure better the lens. I cannot set the aperture from the outside ... one has to use a fingernail and move it manually inside this home-made mount system.

Please find below some images which may help you ... I unfortunately do not known about Nikon systems, thus I cannot advise you about any specifics there ... try the extension tube set-up with your proper Nikon mount and depending on the length of the tubes, you can have a near macro result ... longer tube length = closer to a "macro" or close focus image.

I just tried this lens set-up on the K-1 and it will work on a full frame ... but, the far focus is about 1 meter max. as now assembled. Plus my Werra 100mm lens is a bit "sick" and I need to attend to it ... the lens barrel will pull out of the body, so I need to put it back correctly and re-align, etc. ... another "rainy day" project.

Hope this helps and feel free to post here if you have any questions ... Salut, J
Attached Images
View Picture EXIF
PENTAX K-5  Photo 
View Picture EXIF
PENTAX K-5  Photo 
View Picture EXIF
PENTAX K-5  Photo 
View Picture EXIF
PENTAX K-5  Photo 
10-30-2018, 09:26 AM - 1 Like   #472
Site Supporter
Site Supporter
Jean Poitiers's Avatar

Join Date: Apr 2011
Location: Lost in translation ...
Photos: Gallery | Albums
Posts: 17,316
QuoteOriginally posted by DimiTator Quote
Monsieur Poitier, je vais vous envouyez une question par PM concernant le Cardinar.
Hi, I just sent you a PM to tell you that the information is on this thread ... also, I forgot to add a sample image of the lens used on the full frame K-1.

Here it is ... rather hastily made in the back yard. Shot wide open and at about two and half feet distance ... Cheers, J
Attached Images
View Picture EXIF
PENTAX K-1  Photo 
10-30-2018, 11:24 AM   #473
New Member




Join Date: Oct 2018
Posts: 3
QuoteOriginally posted by Jean Poitiers Quote
Hi, I just sent you a PM to tell you that the information is on this thread ... also, I forgot to add a sample image of the lens used on the full frame K-1.

Here it is ... rather hastily made in the back yard. Shot wide open and at about two and half feet distance ... Cheers, J
Thanks a lot Jean, this really helps me!

11-03-2018, 03:20 AM   #474
Pentaxian
aurele's Avatar

Join Date: Jan 2011
Location: Paris, France
Photos: Albums
Posts: 3,172
Hello everyone,

I've got a Minolta MC Tele Rokkor PF 100mm f2.5 that i'd like to convert.

Does anyone already done it ?

I haven't seen a post related to it, so i'm asking. But so far i don't think it has been done.
I'll have to find a way to shave 1mm somewhere !
11-03-2018, 03:34 AM   #475
Pentaxian
swanlefitte's Avatar

Join Date: May 2015
Location: New Orleans
Photos: Gallery
Posts: 1,851
Aurele, This tread might be a good starting point. It also deserves a link here anyway.
Konica, Minolta, etc. mount to Pentax K - How to save the old lenses - PentaxForums.com
11-03-2018, 03:42 AM   #476
Pentaxian
aurele's Avatar

Join Date: Jan 2011
Location: Paris, France
Photos: Albums
Posts: 3,172
QuoteOriginally posted by swanlefitte Quote
Aurele, This tread might be a good starting point. It also deserves a link here anyway.
Konica, Minolta, etc. mount to Pentax K - How to save the old lenses - PentaxForums.com
thanks !

The main difficulty is that the mount is not visibly screwed to the rest of the lens.

Otherwise i would have done as usual : M42 to K adapter to replace the minolta mount.


EDIT : took a peak at the body and the mount is way too annoying to get : You have to unmount the back of the mount groupe. Dismantle all the aperture lever things (and those tricky little springs), to get to the mount. Mount that is like sandwich-ed between two piece of the mount bloc. Meaning you have to get an adapter, shimmed it to a small ring aroung the mount it self, create screw thread in it, then remount the whole thing.

I'm not equipped nor skilled to do this. Sad because this is a real keeper !

Last edited by aurele; 11-03-2018 at 03:54 AM.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
85mm, ar, camera, distances, hexanon, konica, lens, lenses, macro, mount, pentax, pentax lens, pm
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
The * lens club BrendanPK Pentax SLR Lens Discussion 56 08-13-2017 12:38 PM
Soviet Lens Club - MIR lens stevewig Lens Clubs 4 03-25-2016 02:50 AM
The *any and all* lens club yeatzee Lens Clubs 37 11-08-2012 04:50 PM
The 'Hey this lens has glass elements in it' Lens Club Igilligan Lens Clubs 50 11-14-2010 11:07 PM
This has to be impossible! jct us101 Pentax DSLR Discussion 15 02-12-2009 04:41 PM



All times are GMT -7. The time now is 09:36 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top