C/y 35-70 thread

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Archive 2010 · C/y 35-70 thread

mMontag
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p.50 #1 · C/y 35-70 thread

Most owners of this lens are happy with it and tend to hold onto them - I for one - highly recommended.

Originally produced by Zeiss for Contax - some of these lenses have been "converted" using an after market Leitax adapter to Nikon, Sony, Canon & etc mounts. You can also use a simple AF confirm adapter from E-bay.

http://www.ebay.com/itm/Contax-Vario-Sonnar-35-70mm-F-3-4-MMJ-Lens-EX-/280738664275?pt=Camera_Lenses&hash=item415d540f53

http://www.leitax.com/Zeiss-Contax-lenses-for-Canon-cameras.html

http://www.ebay.com/itm/Contax-Yashica-Canon-Adapter-AF-Confirm-OPTIX-V5-/120745596206?pt=LH_DefaultDomain_0&hash=item1c1cff952e

Sep 22, 2011 at 01:09 AM

Krosavcheg
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p.50 #2 · C/y 35-70 thread

Shooting a set with a model last night. Simple one strobe off camera setup. Noticed this morning a strange artefact (shot in portrait mode 90CCW rotation, so must be bottom line):

100% crop

This image is copyrighted by the owner

Scanlines

Hmm..also shot 21/2.8, Rokkor58 and Mamiya 85/1.9 that night, but can't see anything similar in other shots. Must be the flash attribute...

This particular is shot at 5.6, I recall...

Sep 23, 2011 at 09:53 AM

FlyPenFly
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p.50 #3 · C/y 35-70 thread

Looks like a recording or processing error.

Sep 23, 2011 at 11:31 AM

Krosavcheg
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p.50 #4 · C/y 35-70 thread

certainly looks like! perhaps time to retire my CF card..

Sep 23, 2011 at 11:49 AM

Krosavcheg
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p.50 #5 · C/y 35-70 thread

Just checked few random shots...this is only present in 35-70 shots with off camera flash.

Sep 23, 2011 at 12:34 PM

mirkoc
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p.50 #6 · C/y 35-70 thread

Krosavcheg wrote:
Just checked few random shots...this is only present in 35-70 shots with off camera flash.
How do you trigger your off camera flash? Some remote flash triggers are known to interfere with 5D.

Sep 23, 2011 at 01:53 PM

Krosavcheg
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p.50 #7 · C/y 35-70 thread

Mirkoc: That is absolutely correct. I use Cactus V4 right now.
Afaik, interference shows at 1/200-250s range and was a well known issue.
This is really weird - I shot a set before with 35-70 and remote trigger and didn't see a hint of this artefact...
But I am inclined to believe that this is indeed a trigger issue. Will have to shoot a bunch of test shots again..

Sep 23, 2011 at 03:45 PM

Krosavcheg
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p.50 #8 · C/y 35-70 thread

Upon closer examination, it appears to be signal interference. Not much to do except to shield the trigger best I can..

Sep 24, 2011 at 05:58 AM

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