C/y 35-70 thread
/forum/topic/862783/49

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mMontag
Registered: Dec 15, 2008
Total Posts: 2071
Country: United States

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



Krosavcheg
Registered: Apr 10, 2006
Total Posts: 2691
Country: Japan

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






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...


FlyPenFly
Registered: Feb 14, 2011
Total Posts: 6389
Country: United States

Looks like a recording or processing error.



Krosavcheg
Registered: Apr 10, 2006
Total Posts: 2691
Country: Japan

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



Krosavcheg
Registered: Apr 10, 2006
Total Posts: 2691
Country: Japan

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



mirkoc
Registered: Jan 26, 2008
Total Posts: 619
Country: Croatia

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.



Krosavcheg
Registered: Apr 10, 2006
Total Posts: 2691
Country: Japan

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..



Krosavcheg
Registered: Apr 10, 2006
Total Posts: 2691
Country: Japan

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



briantho
Registered: Oct 07, 2011
Total Posts: 1081
Country: Sweden

Just testing...



briantho
Registered: Oct 07, 2011
Total Posts: 1081
Country: Sweden

OK, so that explains why very old threads have been popping up on the forum lately... Arhcived threads can be brought back to life. Didn't know that.

Anyway, this is a good thread to bump now that I own this lens



leo11877
Registered: Aug 05, 2004
Total Posts: 305
Country: United States

briantho wrote:
OK, so that explains why very old threads have been popping up on the forum lately... Arhcived threads can be brought back to life. Didn't know that.

Anyway, this is a good thread to bump now that I own this lens


Good to know too. There are some hidden gems in the Archive. I would like to see more of the 35-70mm images now that we have A7/Fuji and other mirrorless marvels ready to exploit this little master



philip_pj
Registered: Apr 03, 2009
Total Posts: 3103
Country: Australia

Let me tell you leo, the a7r loves the 35-70 to death, lol, it brings out all the subtlety of the colour and microncontrast the zoom has in abundance. Best used above 45mm, a little CA appears at the short end with the tough new taskmistress.

While on the subject, what I think the a7r does to most (depressingly many) lenses is this: where lower res sensors flatten out the best each lens has (in the centre regions) so the outer frame and corners look not bad at all, the a7r takes the centre to a higher level (often much higher) and outer frame and corners suddenly look weak, being far below.

It also exposes related weaknesses that underlie these frame areas such as curvature and sudden drops in microcontrast. Happily the 35-70 is close to the top of the pile, after 20 years...



dovey
Registered: Feb 05, 2012
Total Posts: 98
Country: Australia

Phillip,
I could not agree more strongly.
I have a selection of Canon L primes and zooms, now the ZE551.8 and soon the 24-70, but the Contax zoom and 28mm are on my camera more than any other lens. The zoom also offers a 1:1 macro!



Steve Spencer
Registered: Nov 08, 2006
Total Posts: 7271
Country: Canada

dovey wrote:
Phillip,
I could not agree more strongly.
I have a selection of Canon L primes and zooms, now the ZE551.8 and soon the 24-70, but the Contax zoom and 28mm are on my camera more than any other lens. The zoom also offers a 1:1 macro!


The macro feature is actually 1:2.5 (here is the link to the Zeiss data sheet: http://lenses.zeiss.com/content/dam/Photography/new/pdf/en/downloadcenter/contax_yashica/vario-sonnar3-4_35-70mm_e.pdf), but it is still very useful.



philip_pj
Registered: Apr 03, 2009
Total Posts: 3103
Country: Australia

1:2.5 is indeed correct for the CY 35-70, but very few 'macro' lenses are 1:1 these days. For example the well-regarded 50mm f2 Makro Planar ZE/F does 1:2.

The CY 35-70 also has pleasant bokeh and is lighter than both the 50MP and 35/2 Distagon in the ZE/F line. Better corners and less distortion (at 50mm) than the 50MP, factors that assume greater importance on the 36Mp a7r. Slow lenses like this one come alive with good focus aids - EVF, etc.



Peire
Registered: Apr 27, 2010
Total Posts: 1285
Country: Poland

Some of the recently processed C/Y Vario Sonner 35-70/3.5+NEX5N pics from last autumn:



























ebrandon
Registered: Feb 21, 2005
Total Posts: 862
Country: United States

The threads popping up on FM lately have been really in sync with my A7R experience.

I headed out the door on a gloomy San Francisco day today with a brand new Novoflex CY->NEX adapter and a bag full of CY Zeiss lenses, not least of which the 35-70mm f3.4.

Boy did this lens get along with the A7R! With this excellent adapter it's sharp pretty much edge to edge, and contrasty with seemingly no stray light bouncing around inside.

So here are some shots from today. Love this lens on the A7R.













What happened here?






philber
Registered: May 21, 2008
Total Posts: 7369
Country: France

philip_pj wrote:
Let me tell you leo, the a7r loves the 35-70 to death, lol, it brings out all the subtlety of the colour and microncontrast the zoom has in abundance. Best used above 45mm, a little CA appears at the short end with the tough new taskmistress.

While on the subject, what I think the a7r does to most (depressingly many) lenses is this: where lower res sensors flatten out the best each lens has (in the centre regions) so the outer frame and corners look not bad at all, the a7r takes the centre to a higher level (often much higher) and outer frame and corners suddenly look weak, being far below.

It also exposes related weaknesses that underlie these frame areas such as curvature and sudden drops in microcontrast. Happily the 35-70 is close to the top of the pile, after 20 years...


I respectfully beg to differ. The A7R, with its great resolution, also shows which lenses are richer in detail than others. While the 35-70 does indeed score well on color, contrast and sharpness, I have always found it quite weak on detail. The picture of the bridge does confirm my impression, though a lens shouldn't be judged on one picture alone, where PP might be the cause.



leo11877
Registered: Aug 05, 2004
Total Posts: 305
Country: United States

philber wrote:
philip_pj wrote:
Let me tell you leo, the a7r loves the 35-70 to death, lol, it brings out all the subtlety of the colour and microncontrast the zoom has in abundance. Best used above 45mm, a little CA appears at the short end with the tough new taskmistress.

While on the subject, what I think the a7r does to most (depressingly many) lenses is this: where lower res sensors flatten out the best each lens has (in the centre regions) so the outer frame and corners look not bad at all, the a7r takes the centre to a higher level (often much higher) and outer frame and corners suddenly look weak, being far below.

It also exposes related weaknesses that underlie these frame areas such as curvature and sudden drops in microcontrast. Happily the 35-70 is close to the top of the pile, after 20 years...


I respectfully beg to differ. The A7R, with its great resolution, also shows which lenses are richer in detail than others. While the 35-70 does indeed score well on color, contrast and sharpness, I have always found it quite weak on detail. The picture of the bridge does confirm my impression, though a lens shouldn't be judged on one picture alone, where PP might be the cause.


The previous pages have enough sharp images.



ebrandon
Registered: Feb 21, 2005
Total Posts: 862
Country: United States

philber wrote:
philip_pj wrote:
Let me tell you leo, the a7r loves the 35-70 to death, lol, it brings out all the subtlety of the colour and microncontrast the zoom has in abundance. Best used above 45mm, a little CA appears at the short end with the tough new taskmistress.

While on the subject, what I think the a7r does to most (depressingly many) lenses is this: where lower res sensors flatten out the best each lens has (in the centre regions) so the outer frame and corners look not bad at all, the a7r takes the centre to a higher level (often much higher) and outer frame and corners suddenly look weak, being far below.

It also exposes related weaknesses that underlie these frame areas such as curvature and sudden drops in microcontrast. Happily the 35-70 is close to the top of the pile, after 20 years...


I respectfully beg to differ. The A7R, with its great resolution, also shows which lenses are richer in detail than others. While the 35-70 does indeed score well on color, contrast and sharpness, I have always found it quite weak on detail. The picture of the bridge does confirm my impression, though a lens shouldn't be judged on one picture alone, where PP might be the cause.


I have a whole other thread dedicated to how my A7R pictures are looking soft when downscaled for the web. http://www.fredmiranda.com/forum/topic/1270284

Perhaps this version of the bridge picture with a little post-downscaling sharpening will give you more faith in the 35-70mm?







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