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fuzzywuzzy
Joined: 18 Dec 2010
Posts: 1258
Location: Down East, Canada, eh?
Expire: 2013-11-30
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 Posted: Fri Jun 29, 2012 1:52 am Post subject: the world's ugliest Exakta to EF adapter |
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fuzzywuzzy wrote:
I've got a Hong Kong Exakta to Canon EF adapter, which works well for non-auto lenses. Unfortunately, the 2 Exakta lenses that I really want to use are auto lenses, with the gigantic knob sticking out the side.
I had a T-mount to EF adapter hanging around, so I popped out the inner threads and used extra-long screws to clamp that narrow little Exakta bayonet. There's a huge gap, so I wrapped it with a black shoelace hoping to prevent light leaks, dust etc.
This contraption lets me mount onto my EF body, at the cost of 10 or so mm of extension.
In the case of my Flektogon 25/4, landscapes are out of the question, and in fact portraits are challenging...
It could be used as a cumbersome macro lens, where half the trick is keeping the lens from shading the subject. There's about 3 cm between the flower and the front glass element.
Still, it's less frustrating then having a lens sitting on the shelf not knowing if it works at all 
_________________
I welcome C&C, editing my pics and reposting them on the forum is fine.
NEX-F3
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CZJ Sonnar 135/4, Biotar 58/2, Pancolar 50/2, Tessar 50/2.8, Flek 35/2.8, Flek 25/4
Super Takumar 135/2.5, 135/3.5, 100/4 bellows, 50/1.4, 28/3.5
Helios 58/2, 3M-5A 500/8, Mir 20M
Vivitar Series 1 70-210 - - - - - - - - Nikkor 200/4
Rikenon 28/2.8 - - - - - - - - Zeiss 50/1.7 Planar
PB 50/2.4, 135/2.8
Yashica 50/1.9, 28/2.8, 135/2.8
Hexanon 28/3.5, 50/1.4 |
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luisalegria
Joined: 07 Mar 2008
Posts: 6602
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Fri Jun 29, 2012 6:10 am Post subject: |
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luisalegria wrote:
Suggestion -
Get an M39-Canon adapter - they do make them.
M39 is almost exactly the Exakta mount diameter
Remove the Exakta locking lug, tape the Exakta mount to make it fit snugly in the M39 hole, drill and tap the adapter to mount three small screws, similar to what you did, best I think would be to use setscrews.
You may even get infinity.
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I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
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iangreenhalgh1
Joined: 18 Mar 2011
Posts: 15679
Expire: 2014-01-07
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| Posted: Fri Jun 29, 2012 10:23 am Post subject: |
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iangreenhalgh1 wrote:
I just used an M42-EOS adapter, it fits over the exakta bayonet and if it's a flanged one the fit is pretty tight, just a few blobs of epoxy and it is pretty well secured, it does give infinity too.
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I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
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fuzzywuzzy
Joined: 18 Dec 2010
Posts: 1258
Location: Down East, Canada, eh?
Expire: 2013-11-30
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| Posted: Fri Jun 29, 2012 12:14 pm Post subject: |
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fuzzywuzzy wrote:
| luisalegria wrote: |
Suggestion -
Get an M39-Canon adapter - they do make them.
M39 is almost exactly the Exakta mount diameter
Remove the Exakta locking lug, tape the Exakta mount to make it fit snugly in the M39 hole, drill and tap the adapter to mount three small screws, similar to what you did, best I think would be to use setscrews.
You may even get infinity. |
The problem is that auto knob on the side, it hits the collar around the EF mount.
Your way would greatly improve the Sonnar's reach, but the Flek is trickier. When I rotate the Flek from infinity focus to 1m, the glass elements only move forwards by about 1mm  so it's unforgiving as hell.
Even freelensing I can't get infinity on the Flek without some tilt. Once I plug an adapter into that EF mount it's already a macro lens
I've got an Exakta body on the way, and one of these days I'll splurge on a NEX. I just got frustrated having this glass on the shelf that I hadn't been able to try.
The Sonnar is a nice flower lens (as you'd expect) on this contraption, if I ever get some shots I'm satisfied with I'll post them.
_________________
I welcome C&C, editing my pics and reposting them on the forum is fine.
NEX-F3
~~~~~~~~~
CZJ Sonnar 135/4, Biotar 58/2, Pancolar 50/2, Tessar 50/2.8, Flek 35/2.8, Flek 25/4
Super Takumar 135/2.5, 135/3.5, 100/4 bellows, 50/1.4, 28/3.5
Helios 58/2, 3M-5A 500/8, Mir 20M
Vivitar Series 1 70-210 - - - - - - - - Nikkor 200/4
Rikenon 28/2.8 - - - - - - - - Zeiss 50/1.7 Planar
PB 50/2.4, 135/2.8
Yashica 50/1.9, 28/2.8, 135/2.8
Hexanon 28/3.5, 50/1.4 |
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luisalegria
Joined: 07 Mar 2008
Posts: 6602
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Fri Jun 29, 2012 3:16 pm Post subject: |
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luisalegria wrote:
There is some space available to get infinity with the method I'm describing.
Its essentially what I did to make Exakta-Pentax K adapters. On those I'm off infinity by a bit over 1mm
On a Canon you get that back, pretty much.
If you can find a thin enough flanged adapter you're in business.
AND I have adapted lenses with the "arm", such as the Pancolar. Just arrange it so the arm ends up projecting down, under the lens.
After all, if you make your own adapter you can set the lens alignment as you want it.
_________________
I like Pentax DSLR's, Exaktas, M42 bodies of all kinds, strange and cheap Japanese lenses, and am dabbling in medium format/Speed Graphic work. |
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bob955i
Joined: 15 Apr 2007
Posts: 2495
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| Posted: Sat Jun 30, 2012 7:45 pm Post subject: |
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bob955i wrote:
You can take the arm off and tape up the hole in the lens.
Non-destructive mod and easily refitted. |
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