View previous topic :: View next topic |
Author |
Message |
Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
|
Posted: Tue May 22, 2007 10:44 pm Post subject: Exacta lenses (and EOS adapter) |
|
|
Orio wrote:
Is it possible to remove that "bulge" from the Exacta lenses that have it?
I ask because the hong kong adapter I have found, talks about the bulge as being able to not clear the wat to the rotation of the bayonet inside the EOS cameras.
This surely must be verified (the 5D for instance not having the builtin flash should not have this problem), but for the moment I'd like to know it that bulge is removable by unscrewing, etc....
Thanks! _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
|
Back to top |
|
|
rick_oleson
Joined: 26 Feb 2007 Posts: 386 Location: Lexington Kentucky USA
|
Posted: Tue May 22, 2007 10:50 pm Post subject: |
|
|
rick_oleson wrote:
I assume you're talking about the arm that has the shutter release button and the auto diaphragm system in it? No, you can't remove that. And I expect that it would interfere with the overhanging prism on the 400D, but I think the higher end models without built-in flash would be okay.
:)= _________________ I don't know what I want to be when I grow up |
|
Back to top |
|
|
Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
|
Posted: Tue May 22, 2007 11:09 pm Post subject: |
|
|
Orio wrote:
Thanks Rick!
I need to find an Exakta lens with bulge to test on the 5D.
If I can mount that, a whole universe of much cheaper Exakta version lenses will open!
For instance, the Flek 4/20 for Exakta is usually sold at about half the price of the M42 version. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
|
Back to top |
|
|
hacksawbob
Joined: 28 Feb 2007 Posts: 1293 Location: LANCS UK
|
Posted: Wed May 23, 2007 2:05 pm Post subject: |
|
|
hacksawbob wrote:
Hi Orio I have a pancolar exacta with bulge here. my thoghts were perhaps to mount the lens 180or 90 degrees out by modifying the EOS side there by retaining the register distance... maybe I can send it for testing |
|
Back to top |
|
|
Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
|
Posted: Wed May 23, 2007 3:40 pm Post subject: |
|
|
Orio wrote:
Bob the seller of the adapter wrote that the adapter is incompatible with the "bulged" exaktas.
So even if there was room enough on the 5D to mount one, there would not be an adapter for it.
Too bad, there is plenty of Flektogon 25mm lenses for exakta that are so appetizing! _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
|
Back to top |
|
|
bob955i
Joined: 15 Apr 2007 Posts: 2495
|
Posted: Wed May 23, 2007 4:54 pm Post subject: |
|
|
bob955i wrote:
You can remove the aperture button mechanism ("the bulge") from the later CZJ lenses.
There's a little bit of work involved, but I can show you how to do this if necessary.
It's completely reversible too... |
|
Back to top |
|
|
Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
|
Posted: Wed May 23, 2007 5:48 pm Post subject: |
|
|
Orio wrote:
Thanks Bob, but I would still be without the adapter. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
|
Back to top |
|
|
Attila
Joined: 24 Feb 2007 Posts: 57849 Location: Hungary
Expire: 2025-11-18
|
Posted: Wed May 23, 2007 5:55 pm Post subject: |
|
|
Attila wrote:
Exakta camera register distance is 44.7, EOS register distance is 44.0. I am afraid this is not a real opportunity to use Exakta's wide angle lenses. I don't belive this adapter will maintenance infinity focus.0.7 mm simple not enough to make right adapter. _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
|
|
Back to top |
|
|
bob955i
Joined: 15 Apr 2007 Posts: 2495
|
Posted: Wed May 23, 2007 6:39 pm Post subject: |
|
|
bob955i wrote:
@ Orio:
I think what the seller may mean about incompatibility is regarding the front of the 5D's pentaprism preventing the Exakta "bulge" from rotating past when you mount the lens.
Remove the "bulge" and you should be able to mount the lens using the adapter.
However, Attila's correct - there's another Exakta-EOS adapter made by Kindai and from various reports I've read, it too doesn't quite allow true infinity focus for the same reason. And it's daaaaaamn expensive......
That said, nothing's impossible....... |
|
Back to top |
|
|
hacksawbob
Joined: 28 Feb 2007 Posts: 1293 Location: LANCS UK
|
Posted: Wed May 23, 2007 6:54 pm Post subject: |
|
|
hacksawbob wrote:
My understanding was that the lens would fit the adapter but the two together would not fit the camera as lens bulge and flash would collide. So if the lens were mounted off-set this would not be an issue. I have just tried with my M42 adapter and it will mount to the Eos if you place it onto the camera ithe the red marker at abot 5 Oclock instead of 12 Oclock. all that is needed is to drill a new hole for the locking pin on the camera to prevent the lens rotating too far. The f stops and focusing numbers will be on the underside but that is not the end of the world. |
|
Back to top |
|
|
Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
|
Posted: Wed May 23, 2007 7:55 pm Post subject: |
|
|
Orio wrote:
bob955i wrote: |
@ Orio:
I think what the seller may mean about incompatibility is regarding the front of the 5D's pentaprism preventing the Exakta "bulge" from rotating past when you mount the lens.
|
No, I asked him the specific question. Should the 5D allow room for the rotating bulge, would I be able to use the adapter? And his answer was no, the adapter is not compatible with the bulged lenses, regardless of if 5D would allow one to be mounted or not. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
|
Back to top |
|
|
bob955i
Joined: 15 Apr 2007 Posts: 2495
|
Posted: Wed May 23, 2007 8:27 pm Post subject: |
|
|
bob955i wrote:
I've had a look at my Exakta mount lenses and I think I know what he's referring to - on the "bulge" lenses, the aperture mechanism has a cover with a small protrusion that looks like it may foul the adapter and thus prevent it from mounting. The actual Exakta bayonet sits proud of the camera front so this protrusion never causes a problem.
If you remove the aperture mechanism, I would think you'd be able to use the adapter.
I can post images of the points I'm referring to. |
|
Back to top |
|
|
hacksawbob
Joined: 28 Feb 2007 Posts: 1293 Location: LANCS UK
|
Posted: Wed May 23, 2007 10:18 pm Post subject: |
|
|
hacksawbob wrote:
Can you tell me which part you think will cause a problem?
|
|
Back to top |
|
|
Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
|
Posted: Wed May 23, 2007 10:34 pm Post subject: |
|
|
Orio wrote:
If you have doubt, you can ask the seller directly:
Click here to see on Ebay
His name is Eric. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
|
Back to top |
|
|
lulalake
Joined: 22 Apr 2007 Posts: 1191 Location: Near Austin Texas
Expire: 2011-11-18
|
Posted: Thu May 24, 2007 3:42 am Post subject: |
|
|
lulalake wrote:
hacksawbob wrote: |
Can you tell me which part you think will cause a problem?
|
It seems as if one removed the cap (A-B-C-D) then nothing would crash??
Jules |
|
Back to top |
|
|
hacksawbob
Joined: 28 Feb 2007 Posts: 1293 Location: LANCS UK
|
Posted: Thu May 24, 2007 1:54 pm Post subject: |
|
|
hacksawbob wrote:
OK I contacted eric with this picture here is his response, "part A blocks the protruding top of EOS, and part B and C block the adapter"
now looking it this if you can remove the plate with B and C we may be in business |
|
Back to top |
|
|
bob955i
Joined: 15 Apr 2007 Posts: 2495
|
Posted: Thu May 24, 2007 7:21 pm Post subject: |
|
|
bob955i wrote:
@ Orio: Part B would foul the adapter, and part A, the mirror pentaprism like the seller says.
@ Bob:
The plate tensions the shutter/aperture button by means of a compression spring - remove the plate and the button and spring fall out, but you're still left with the "bulge".
Quote: |
It seems as if one removed the cap (A-B-C-D) then nothing would crash?? |
Like I said several posts before, I can show everyone how to remove the whole lot.
All non-destructive and completely reversible. |
|
Back to top |
|
|
lulalake
Joined: 22 Apr 2007 Posts: 1191 Location: Near Austin Texas
Expire: 2011-11-18
|
Posted: Thu May 24, 2007 9:43 pm Post subject: |
|
|
lulalake wrote:
bob955i wrote: |
@ Orio: Part B would foul the adapter, and part A, the mirror pentaprism like the seller says.
@ Bob:
The plate tensions the shutter/aperture button by means of a compression spring - remove the plate and the button and spring fall out, but you're still left with the "bulge".
Quote: |
It seems as if one removed the cap (A-B-C-D) then nothing would crash?? |
Like I said several posts before, I can show everyone how to remove the whole lot.
All non-destructive and completely reversible. |
BOB,
Can you post the procedure?
Thanks
Jules |
|
Back to top |
|
|
bob955i
Joined: 15 Apr 2007 Posts: 2495
|
Posted: Fri May 25, 2007 3:02 pm Post subject: |
|
|
bob955i wrote:
Here it is guys:
No pix but once you get in there, it's pretty straightforward and it covers all the '60s CZJ Exakta automatic glass as they all used the same mount albeit with some minor differences.
1. Remove four screws around circumference of lens mount and detach it – place screws and lens to one side for now.
2. Remove two screws securing rear plate of aperture/shutter release housing – press down on plate as you remove screws to prevent it from springing up suddenly.
3. Remove aperture/shutter release tension spring and button.
4. Remove screw inside aperture/shutter release housing.
5. Remove small circlip from cam pin directly opposite above screw.
6. Lift off cam, taking care not to lose small tension spring.
7. Remove cam pin using suitable tool – it has two diametrically opposite slots at its base.
8. Detach aperture/shutter release housing.
9. Remove two screws adjacent to bayonet stop pin.
10. Remove aperture actuating arm, taking care not to lose small tension spring.
11. Refit lens mount.
12. Cover hole in mount using insulating tape etc.
13. Enjoy your preset Exakta lens...
If you decide to restore the lens back to original, as well as naturally keeping all the parts you remove, take note that refitting the spring in step 10 is extremely fiddly and will severely try your patience..... |
|
Back to top |
|
|
Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
|
Posted: Fri May 25, 2007 5:05 pm Post subject: |
|
|
Orio wrote:
Thank you Bob for the detailed description. Maybe one day I will try it. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
|
Back to top |
|
|
hacksawbob
Joined: 28 Feb 2007 Posts: 1293 Location: LANCS UK
|
Posted: Fri May 25, 2007 6:30 pm Post subject: |
|
|
hacksawbob wrote:
PING what was that? it was my spring flying off across the kitchen to God knows where, I hope it turns up again! |
|
Back to top |
|
|
bob955i
Joined: 15 Apr 2007 Posts: 2495
|
Posted: Fri May 25, 2007 8:20 pm Post subject: |
|
|
bob955i wrote:
Wait until you try to refit the tiny spring I referred to in step 10......
They've only just allowed me to be in the vicinity of large heavy tools and sharp instruments.
And I still break out in a cold sweat if anyone mentions the word "spring"......
|
|
Back to top |
|
|
lulalake
Joined: 22 Apr 2007 Posts: 1191 Location: Near Austin Texas
Expire: 2011-11-18
|
Posted: Fri May 25, 2007 10:04 pm Post subject: |
|
|
lulalake wrote:
Bob,
Thanks so much but s***, now I need to buy an adapter and some P. lenses before they get too expensive!
Jules |
|
Back to top |
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|