C/y 35-70 thread

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Archive 2010 · C/y 35-70 thread

buggz2k
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p.17 #1 · C/y 35-70 thread

Hah!
Way too predictable.
They both arrive at the same day!
Haha.
Shrug, gives me another excuse to purchase another c/y lens!

debuggerus wrote:
This one is from NY. They usually ship the same day.

http://cgi.ebay.com/C-Y-Contax-Yashica-Lens-CANON-EOS-EF-Mount-adapter-/170395355186?cmd=ViewItem&pt=Digital_Camera_Accessories&hash=item27ac5ac832#ht_2648wt_1202

Well this sucks.
It is killing me to not be able to use this lens.
I am stilling waiting for the adapter from Hong Kong, sigh...
Is there a US purchase place for a cheap, cannot afford an expensive one right now, C/Y adapter?
But then, as soon as I purchase this, the other will arrive?
Sigh...

buggz2k wrote:
Pick up the lens from KEH today, EX++, very nice indeed.
Ordered this adapter:
http://cgi.ebay.com/AF-Confirm-Contax-Lens-canon-lens-adapter-1DS-5DII-/120525332740?cmd=ViewItem&pt=Lens_Accessories&hash=item1c0fdea104

buggz2k wrote:
I did it now...
Your Transaction has Processed Successfully.
35-70 F3.4 VARIO SONNAR T*MM (67) *WITH CAPS 35MM SLR MANUAL FOCUS ZOOM WIDE ANGLE LENS
On it's way.

PLEASE tell me which is the best mount for a 5DMkII to use w/ this lens/
Thanks!

Jul 27, 2010 at 12:32 AM

buggz2k
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p.17 #2 · C/y 35-70 thread

Uhm, so now I this mounted, how do I unmount this thing?
Lens from adapter, that is, I don't see a lever button, or whatever.
Sigh...

Jul 27, 2010 at 01:05 AM

Krosavcheg
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p.17 #3 · C/y 35-70 thread

There is a small metal spring at the bottom of the adaptor locking to the mount. You need to push it outwards in order to remove the adaptor from the lens.

Jul 27, 2010 at 01:12 AM

buggz2k
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p.17 #4 · C/y 35-70 thread

Wow, not reallyliking this.
I bet I over tightened it when putting it on.
I guess you can do this, yes?

Krosavcheg wrote:
There is a small metal spring at the bottom of the adaptor locking to the mount. You need to push it outwards in order to remove the adaptor from the lens.

Jul 27, 2010 at 01:14 AM

buggz2k
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p.17 #5 · C/y 35-70 thread

Got it !
Thanks!
What a crappy design.
How did it dismount from the camera originally?
Man the Mamiya adapters are MUCH better!

Jul 27, 2010 at 01:21 AM

Krosavcheg
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p.17 #6 · C/y 35-70 thread

I am not sure about what adaptor you are using, but mine does not require any tightening at all - it just clicks in place and the spring locks to the grove on the actual lens mount. I just use a small screw driver and gently push the spring outwards on the rare occasions I need to remove the adaptor.
Hope it helps.

Jul 27, 2010 at 01:23 AM

buggz2k
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p.17 #7 · C/y 35-70 thread

Yeah, I over tightened the first one.
I bent the metal spring on that one, it was canted.
Luckily two came in on the same day, eh?
Anywho, I got the second one on now, and I didn't use "excessive" tightening this time!
Not that I thought I used excessive force on the first one...

Jul 27, 2010 at 01:28 AM

rsolti13
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p.17 #8 · C/y 35-70 thread

dcjs wrote:
I have a Leitax/Nikon-mount converted 35-70. All "special" treatment that is required is the relocation of a small spring in order to pull the aperture lever in the opposite direction as described on the Leitax website. The spring has a little bit of glue on the attachment points that needs to be removed, but overall it is not a really big deal and fully reversible as well. Not recommended for those who have never worked on flimsy mechanical stuff though..

exactly right. I am actually on my 2nd 'leitaxed' 35-70. the first one I didn't realize there was glue on the spring and lets just say things got messy. I actually had to keep the old, bended spring hanging inside the lens and attach a new one

Plus I scratched the hell out of the rear optic cover. Here are some surgery pics:

This image is copyrighted by the owner

BUT....that certainly didn't affect the picture quality. Oh yeah, I also forgot to cover the optics when I was 'messing' around. See the dust that got in:

This image is copyrighted by the owner

Seriously, never saw any impact to photos with that dust.

Jul 27, 2010 at 01:48 AM

teh_rebel
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p.17 #9 · C/y 35-70 thread

i ended up picking up that one that someone posted from germany ebay. lens not in best condition but fromt he quick snaps i took, it seems fine image quality wise. havent loaded up on the PC yet though. didnt realize how small this zoom lens is, i thought it was bigger from the pics ive seen. in any case, it does take a bit of force to get it into the 'macro' mode. i have to hold the lens back cause it would dismount the lens fromt he adapter otherwise

since im having car troubles and needing money to fix, i might to end up selling the 24-85N and just keeping this one as my zoom lens

.. ill try to do some quick tests but my tripod is mesed up so it wont be easy

Jul 27, 2010 at 02:17 AM

buggz2k
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p.17 #10 · C/y 35-70 thread

Ouch!
I saw this posted before.
Luckily, I did not have to resort to this extreme for removal.
So, you can buy a new spring? Might as well get the two screws also...
From where?

rsolti13 wrote:
dcjs wrote:
I have a Leitax/Nikon-mount converted 35-70. All "special" treatment that is required is the relocation of a small spring in order to pull the aperture lever in the opposite direction as described on the Leitax website. The spring has a little bit of glue on the attachment points that needs to be removed, but overall it is not a really big deal and fully reversible as well. Not recommended for those who have never worked on flimsy mechanical stuff though..

exactly right. I am actually on my 2nd 'leitaxed' 35-70. the first one I didn't realize there was glue on the spring and lets just say things got messy. I actually had to keep the old, bended spring hanging inside the lens and attach a new one

Jul 27, 2010 at 10:27 AM

buggz2k
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p.17 #11 · C/y 35-70 thread

Any other 5DMkII users with this lens here?
I had a mirror hang, strike, however it is, last night messin' around.
What damage does that incur to the camera?
Any damage done to the lens when this happens?
Does this only happen during inifinty focusing? I wasn't paying close attention, so I forget how exactly it happened.
I am kind of hesitant to play w/ this lens any more on the 5DMkII.
I would very much like to hear from actual experiences.
I will have to start from the beginning of this thread and read it entirely, again.

Jul 27, 2010 at 10:34 AM

rsolti13
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p.17 #12 · C/y 35-70 thread

buggz2k wrote:
Ouch!
I saw this posted before.
Luckily, I did not have to resort to this extreme for removal.
So, you can buy a new spring? Might as well get the two screws also...
From where?

rsolti13 wrote:
dcjs wrote:
I have a Leitax/Nikon-mount converted 35-70. All "special" treatment that is required is the relocation of a small spring in order to pull the aperture lever in the opposite direction as described on the Leitax website. The spring has a little bit of glue on the attachment points that needs to be removed, but overall it is not a really big deal and fully reversible as well. Not recommended for those who have never worked on flimsy mechanical stuff though..

exactly right. I am actually on my 2nd 'leitaxed' 35-70. the first one I didn't realize there was glue on the spring and lets just say things got messy. I actually had to keep the old, bended spring hanging inside the lens and attach a new one

Plus I scratched the hell out of the rear optic cover.
BUT....that certainly didn't affect the picture quality. Oh yeah, I also forgot to cover the optics when I was 'messing' around.

Seriously, never saw any impact to photos with that dust.

I actually pulled the extra spring that was in the old contax mount that was removed and placed that one in there. That is the spring that is now attached and the old spring that is still hanging in there is just attached to the old screw....couldn't get it out. So there are two springs in the lens now, not just one.

Jul 27, 2010 at 12:19 PM

Krosavcheg
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p.17 #13 · C/y 35-70 thread

buggz2k wrote:
Any other 5DMkII users with this lens here?
I had a mirror hang, strike, however it is, last night messin' around.
What damage does that incur to the camera?
Any damage done to the lens when this happens?
Does this only happen during inifinty focusing? I wasn't paying close attention, so I forget how exactly it happened.
I am kind of hesitant to play w/ this lens any more on the 5DMkII.
I would very much like to hear from actual experiences.
I will have to start from the beginning of this thread and read it entirely, again.

Anden is using it on 5D MkII...I don't recall him having any issues with the lens...

Jul 27, 2010 at 02:21 PM

helimat
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p.17 #14 · C/y 35-70 thread

5D2 user here, never had any issue whatsoever. I have had interference with other lenses, it doesn't seem to do much damage if it is a once-in-a-while occurrence.

Jul 27, 2010 at 03:29 PM

philber
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p.17 #15 · C/y 35-70 thread

No issue with this lens, even though I have had some with the 25mm C/Y, on a 5D MkII

Jul 27, 2010 at 03:37 PM

Anden
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p.17 #16 · C/y 35-70 thread

I had issues and had to remove the curved protective bit and also file the top of the protective metal part. The mirror hangs in the upright position.

A

Jul 27, 2010 at 04:10 PM

htbyron
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p.17 #17 · C/y 35-70 thread

No problem on my 5DII.

Jul 27, 2010 at 09:35 PM

buggz2k
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p.17 #18 · C/y 35-70 thread

This material removal...
From the lens, or from the mount?
I have verified FLs, Macro, 35, and 70 exhibit the mirror stoppage problem on my 5DMkII.
Focusing distance doesn't seem to matter.
I have to power off the camera, disconnect the lens by a quarter turn or so, and then the mirror falls into place.
This a major bummer deal, I was hoping to have this lens as mostly always attached.
Sigh, now it is ONLY attached to the 40D...

Oh, BTW, the adapter I'm using currently is:
http://cgi.ebay.com/C-Y-Contax-Yashica-Lens-CANON-EOS-EF-Mount-adapter-/170395355186?cmd=ViewItem&pt=Digital_Camera_Accessories&hash=item27ac5ac832#ht_2648wt_1202
The package says MASSA Technology CO., Ltd, made in China

Anden wrote:
I had issues and had to remove the curved protective bit and also file the top of the protective metal part. The mirror hangs in the upright position.

A

Jul 27, 2010 at 11:43 PM

wilco23
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p.17 #19 · C/y 35-70 thread

AhamB wrote:
wilco23 wrote:
Is there anyone use it with Nikon body?
Compare to Nikon counterpart like Nikon 24-70mm, Does it worth the hassle to use this lens on Nikon body?
Thanks

Did you check the instructions on the leitax website? It does seem to be quite a hassle to install the Leitax mount...

Yes, that is the catch. with leitax conversion and chip, the adapter can cost $140 with current euro price. I am not sure what is current market pricing for C/Y 35-70 now.
I got bite by the lens lust crazy habit after reading this link http://robotbreeder.com/LensTests/2008/01/contax-35-70mm-f34-trounces-all-part-1.html
since I never tried with MF lens in stop down mode. I have mf lenses but all are AI-s which has no issue with D-200 body.

Jul 28, 2010 at 02:29 AM

AhamB
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p.17 #20 · C/y 35-70 thread

buggz2k wrote:
This material removal...
From the lens, or from the mount?

Anden wrote:
I had issues and had to remove the curved protective bit and also file the top of the protective metal part. The mirror hangs in the upright position.

A

From the lens of course. The mirror couldn't possible hit the mount.
It's the "shroud" in which the rear element moves which you have to file a bit (at the top I guess), and you can unscrew that curved metal piece that's attached to it. When you have the adapter attached to the lens, you can easily see which part sticks out most into the mirror chamber and where the mirror could hit.

Jul 28, 2010 at 05:07 AM

Krosavcheg
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p.17 #21 · C/y 35-70 thread

Is there a mirror clearance issue on the 5D MkI ?

Jul 28, 2010 at 07:14 AM

AhamB
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p.17 #22 · C/y 35-70 thread

I didn't have any problems with the copy that I tried on my 5Dmk1, but I only had it for a short time. But I think that the mk1 has as least as much (if not more) mirror clearance problems as the mk2 on average.

Jul 28, 2010 at 08:02 AM

Krosavcheg
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p.17 #23 · C/y 35-70 thread

It is logical, though maybe I have not been reading properly, I don't recall any reference to the modification of the 35-70/3.4 for 5D use...:/

Jul 28, 2010 at 08:20 AM

Krosavcheg
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p.17 #24 · C/y 35-70 thread

On a slightly different note....

One hot day in Shibuya:

This image is copyrighted by the owner

Jul 28, 2010 at 08:31 AM

buggz2k
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p.17 #25 · C/y 35-70 thread

So,
A mirror strike occurs when the mirror is raised, and strikes the lens mount?
And,
A mirror hang occurs when the mirror is released, and hangs on top of the mount?

On my 5DMkII and the C/Y 35-70 lens I definitely end up w/ mirror hangs.
But, how do I know it isn't striking also?
I guess it is also striking? I'm uncertain...

I have been toying with the idea of ordering a new mirror, and having it shaved.
Then replace the existing mirror w/ the shaved one.
Of course, this will mean the camera has to go to a shop that performs this type of work.
Anyone had this performed?

Jul 30, 2010 at 07:05 PM


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