Sorry, my laptop browser was somehow on a slightly zoomed in setting which I hardly ever change, so that was why it was looking less sharp. Guess I was tired late last night and didn't think about that. Thanks CPUteq for suggesting that in my other thread.
@MWP, I need to look at my comparison shots closely again and will post them, but the Contax N was sharper in the center with better contrast,less haze and also slightly better in the corners at f8 at 200mm than the 70-200/2.8L. After seeing the differences in highlight detail between my 70-200/2.8L and C/Y 100/2 Planar shots of Denali, I was on a mission to find a Zeiss zoom in that range which I could take on travel instead of the Canon which is heavy and larger. The Leica 180/2.8 APO is very sharp across the frame into the corners and is one of the best lenses I own, it is amazing. But sometimes you need a zoom for those times whether on a boat tour off the coast or on a bus in Denali and can not foot zoom and where you really need the zoom. Plus having the ability for AF or nice focus ring feel MF if you want is very nice. This Contax N is very sharp in the middle and across most of the frame, just losing a little in the corners. So far I am pleasantly surprised by how good this lens is.
Bifurcator wrote:
+1
Thanks guys, as this combo I mostly use for flower shooting so you can see it's pictures on Alt Flower thread.I thought, I discovered something for both sides Zeiss and Foveon when couple them together.Btw, there is an opinion that among SD , the SD9 is the sharpest - and dust cover of SD9 also was removed by me to reduce any obstacle to light path to sensor ( I can't assusure you can do it with other SD).
To answer your question about to converse SA TC to accept Canon mount:
1- Check your lens compatibility with TC you want to converse.
2- I never practiced it, but as my theoretical knowledge ,with SA TC you can achieve only 50% of success another 50% is DIA - destroy in action.
3- If I were you , I'll take Sigma TC for Canon, and the part you must modify is male part : and get SA mount with electrical connector from an old SA lens.
Just un-screw the EF mount and replace by SA mount , un-solder and re-solder electric connectors, you avoid the need of drilling 4 holes on the SA mount ( if you use Canon or others than Sigma for Canon TC you must drill ) .
Good luck. http://i6.ebayimg.com/03/i/000/dc/ag/9f54_1.JPG
My understanding - right or wrong - was that the lens was "produced" by Sigma - optics design by Zeiss - one could assume to keep cost low - that lens won't win any high quality build awards but may be one of the smallest / lightest 70-200 FL lenses available. Fits inside of a #1 narrow LowePro lens case - their smallest lens case.
Another nice feature of that lens is the approximate 24" @ 200mm & 32" @ 70mm MFD and very good IQ out at 200mm - the Canon 70-200/4 - has a 48" MFD and noticeable lack of IQ at MFD's & out at the long end - very good build however with size & weight to match.
There was a thread on Conurus forum in which there was a reply from Zeiss specifically acknowledging that the lens was a Sigma design but was approved by Zeiss as conforming to their high standards, or something like that. Maybe someone can dig up that thread, I tried but couldn't find it.
edwardkaraa wrote:
Wayne, superb photos with the N 70-200!!!!!
PS: Just realized this lens was designed by Sigma. Not bad for a Sigma lens with T* coatings
Thanks Edward!
Very good, someone has been doing their Zeiss homework.
Yes, I saw that thread in the Conurus website forum with the email snippet from Zeiss admitting this was true.
wayne seltzer wrote:
Thanks Edward!
Very good, someone has been doing their Zeiss homework.
Yes, I saw that thread in the Conurus website forum with the email snippet from Zeiss admitting this was true.
Anyhow, the 70-200 does show a lot of Zeissness as is evident in your photos. I suspect the T* coatings to play an important role in that.
The lenses in question are the N 28-80 and 70-200, both designed and manufactured by Sigma.
Not bad for a Sigma lens with T* coatings .
This is must be the funiest knowledge I've ever heard about Zeiss.So according to you, Zeiss gave Sigma the rights does designing, manufacturing on their lenses , then sent T* emulsion to Sigma for coating, then did Zeiss stamps on certifications for those lenses ? Pls don't push us to accept that the Zeiss owners were the German Idiots.
Nice landscapes & a very nice landscape zoom - San Juans - unusual Autumn this year - the color change is a full week, maybe week and a half late this year.
I've never had problems with filters on that lens and it sounds opposite of the common remedy of putting a stuck lens / filter into the freezer to contract & release pressure between the two - a good thread cleaning might help.
contas wrote:
This is must be the funiest knowledge I've ever heard about Zeiss.So according to you, Zeiss gave Sigma the rights does designing, manufacturing on their lenses , then sent T* emulsion to Sigma for coating, then did Zeiss stamps on certifications for those lenses ? Pls don't push us to accept that the Zeiss owners were the German Idiots.
Do you read English or is this some kind of Vietnamese humor? Not according to me, according to ZEISS!
(Would like to see it resized in order to view w/o scrolling)