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zeiss 10-100mm t2 s16 conversion


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#1 gregory weisert

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Posted 15 January 2014 - 08:17 PM

hi,

 

i was looking for a conversion for my zeiss 10-100mm t2 markII to s16, to use it on my blackmagic camera. 

do you know if the wides will still vignette? or till which focal length it will vignette?

 

i found a company named abakus and they offer conversion. the thing i'm worried about is loosing image quality through the conversion. maybe u know something about it? and how will they make the conversion. only with an extender?

 

hope to get some infos :)

 

best

gregory


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#2 Philip Kral

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Posted 16 January 2014 - 12:58 AM

I'm not sure if it's the same lens, but I have a Zeiss 10-100mm that opens at its widest a 3.3 T stop. On my super16 film camera it vignettes up to about 75mm but is clear from then on. If it vignettes on a super16 frame I'm sure it will on a black magic. I personally use it for the farther focal lengths obviously. What mount is the lens? 


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#3 Dom Jaeger

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Posted 16 January 2014 - 02:00 AM

Abakus designed and assembled a lot of optical products for Optex, including their S16 lenses and extenders I believe, so their S16 conversion kit for the 10-100 will be first class, the same as the old Optex branded one. It's basically a 1.2X extender on the back, turning the lens into a 12-120, introducing some loss of speed (T2 becomes T2.4) but very little loss in image quality. 

 

Which Black Magic camera are you asking about? On the pocket Black Magic a 12-120 should cover without vignetting, seeing as that camera has a S16 sized sensor. On the Cinema Camera where an image circle of about 18mm is needed I tested a bunch of S16 lenses

see http://www.cinematog...showtopic=56326

and estimated the 11-110 (the original Zeiss S16 conversion) would vignette below about 50mm. A 12-120 would presumably cover a little bit wider, but I don't have one here to test.

 

 


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#4 gregory weisert

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Posted 16 January 2014 - 07:46 AM

i have both blackmagic cameras.

 

but i want to use the zoom mainly on the cinema camera (2,5k) as it is my A-Cam. maybe i will call abakus to ask which image circle the conversion creats


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#5 Jean-Louis Seguin

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Posted 16 January 2014 - 09:30 AM

You might want to contact Charles Pickel at Serious Gear. He does these conversions.

 

http://www.seriousgear.com/

 

Jean-Louis


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#6 Will Montgomery

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Posted 21 January 2014 - 02:58 PM

I put my 10-100 converted to 12-120 (By Charles at Serious Gear) on a projector last week and it looks like from about 24+ it would cover the Black Magic 2.5k sensor. This is at about 24mm on the zoom.

 

24mm.jpg


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