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EXAKTA->EOS adapter
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PostPosted: Sat Dec 27, 2008 5:02 pm    Post subject: EXAKTA->EOS adapter Reply with quote

Not really a review, just bunch of photos and impression as usual.
I am too lazy to write up an official review nor have ability to do so.

I bought this Exakta->EF mount adapter to use my Biotar 58/2. Its construction is
lot more like C/Y->EF mount adapter, you have to take out a whole thing to change
a lens. By the way I took "aperture button" which hits EOS' penta-head and also
bottom of the aperture button prevents from mounting the lens to adapter.

Otherwise it has no problem, is allows to focus infinity.

front

back

Biota 58/2, semi-auto aperture button is removed

test1

test2

test3


Wide open to f4, my Biotar has weak corners. I did not notice until I use
the lens with a digital slr.

the end


PostPosted: Sat Dec 27, 2008 5:22 pm    Post subject: Reply with quote

thanks for the review.

PS ... this mount ... it looks more like the C/Y to EOS mount. I thought that the Exakta mount had a little lip?


PostPosted: Sat Dec 27, 2008 6:58 pm    Post subject: Reply with quote

Great report! Many thanks for sharing!


PostPosted: Sat Dec 27, 2008 8:58 pm    Post subject: Reply with quote

More great information Koji - I'm considering the purchase of a "bokehmonster" 135 and they seem to be cheaper in Exakta mount than M42.

This adapter looks remarkably like my Pentax-M to EOS model...moreso than the adapter in your other thread Question



PostPosted: Sun Dec 28, 2008 1:58 am    Post subject: Reply with quote

The only EXAKTA to EOS adaptors i have seen look like this ...

note the small lip thingie



PostPosted: Sun Dec 28, 2008 3:06 am    Post subject: Reply with quote

Exakta/Topcon's flange distance is 44.7mm, whereas EOS's is 44.0mm.
So there is only 0.7mm difference, so your adapter cannot maintain
infinity focus I think.

Mine can achieve an infinity focus, since the base metal is very thin
so that maintaining the strength as an adapter must be a bit tough.
This adapter is what I was looking for my Exakta mount Biotar 58/2.


PostPosted: Sun Dec 28, 2008 3:43 am    Post subject: Reply with quote

HK300, your adapter is for 4/3 Olympus, looks like and should achieve
infinity focus on Oly DSLR as register distance is 33-34 thereabouts.
That's why your adapter is so thick.


PostPosted: Mon Jan 12, 2009 2:48 pm    Post subject: Reply with quote

Hi,

About how much did you pay for your adapter ?

The only one I saw with a quick ebay check were horribly expensive, ruining the M42 vs. exacta advantage...


PostPosted: Mon Jan 12, 2009 2:50 pm    Post subject: Reply with quote

my supplier is developing a new Exakta to EOS adapter and it will be ready end of this week. I will keep you informed!


PostPosted: Tue Apr 28, 2009 2:31 pm    Post subject: Reply with quote

hk300 wrote:
my supplier is developing a new Exakta to EOS adapter and it will be ready end of this week. I will keep you informed!


HK, has your supplier come up with a new adapter? I'm looking for one for my 90mm Angineux and 50mm Schneider.


PostPosted: Wed Apr 29, 2009 9:24 pm    Post subject: Reply with quote

Will it come with AF chip?


PostPosted: Fri May 01, 2009 10:09 am    Post subject: Reply with quote

Dear Koji,

Can your adapter lock the lens in place ? I can't figure out how this is possible from your photos, except may be with lock screw.

I am look for one to use with my Topcon 58mm F1.4. The adapter I bought at a local camera repair shop has thickness 1mm Shocked , so no infinity, and it was very loose and couldn't hold optical alignment. I am buying another one from Camplus on ebay with Af confirm. I hope this one will be accurate.


PostPosted: Fri May 01, 2009 7:09 pm    Post subject: Reply with quote

Alex

I suspect that quite a lot of us are waiting on tenterhooks for this adapter. There has been quite a lot of upward movement in Topcon lens prices in recent months...

patrickh


PostPosted: Fri May 08, 2009 3:45 pm    Post subject: Reply with quote

Well, in the meantime I have bought an EOS-Exakta adapter of new generation, with lens lock - I hope it works !

Click here to see on Ebay


I will report when it arrives.


PostPosted: Fri May 08, 2009 6:36 pm    Post subject: Reply with quote

Orio

Did it work?


patrickh


PostPosted: Fri Dec 04, 2009 5:17 pm    Post subject: Reply with quote

Hi Orio,

did the adaptor work at infinity?

Cheers
Henry


PostPosted: Sat May 22, 2010 11:57 am    Post subject: Reply with quote

Yes, did it work ??


PostPosted: Mon Jun 20, 2011 3:10 pm    Post subject: Reply with quote

Heathcliff wrote:
Yes, did it work ??


Please Confused


PostPosted: Thu Aug 04, 2011 6:16 pm    Post subject: Reply with quote

Reviving a very old thread to ask if there is an adapter for Exakta (with the auto-arm thingy) to canon EOS? Or do I have to somehow remove the arm? If so, is it easy? Help!

I care not if it will do infinity.


PostPosted: Thu Aug 04, 2011 6:47 pm    Post subject: Reply with quote

Kram wrote:
Reviving a very old thread to ask if there is an adapter for Exakta (with the auto-arm thingy) to canon EOS? Or do I have to somehow remove the arm? If so, is it easy? Help!

I care not if it will do infinity.


I have a Flek in Exakta with the autoarm thingy. My thingy has a lock position enabling the lens to be used with manual aperture. The thingy would foul my EOS body but, because you don't care about infinity, you could mount it on a short Exakta extension tube. These seem to come up frequently (and inexpensively) on ebay.


PostPosted: Thu Aug 04, 2011 6:57 pm    Post subject: Reply with quote

Martyn, thanks for that. Good to know. Off to find the shortest Exakta extension tube that I can...


PostPosted: Thu Aug 04, 2011 7:06 pm    Post subject: Reply with quote

Kram wrote:
Martyn, thanks for that. Good to know. Off to find the shortest Exakta extension tube that I can...

I look forward to some more of your exquisite macro shots.........

Hmmm... I have some exakta extension tubes - maybe I can try some macro too Smile