Sorry, Michael, but DOF changes if the smaller sensor has the same number of photocells, since the CoC is enlarged.
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Sorry, Michael, but DOF changes if the smaller sensor has the same number of photocells, since the CoC is enlarged.
Guys from what i found in Carl Zeiss site, the Depth of Field is changing with different size sensors and same lens. The Compact Primes CP.2 lenses have interchangeable mount (PL, EF, F, E and MFT) and can retain the same focal length with different cameras.
check the Depth of Field Tables in Meter pdf on pages 4, 38 and 68 for example:
http://www.zeiss.com/C12575690045D10...imes_Meter.pdf
You know what Uli: DoF also changes when you are in a black hole. Sorry to be sarcastic, but I was giving some general information to a Reduser newbie who apparently has just heard of the term DoF. I really don't appreciate being swiped at for not responding with a full college-level discourse on optics theory and physics.
Except that I couched the word behavior in terms of being limited to the framing effects (in an apparently failed attempt to avoid the very confusion you are experiencing). And, this clarification came after my initial post where I used the very term you want to emphasize: crop factor. Glad that we have come full circle.
DoF, distortion vs focal length, etc these are all advanced optics topics. The OP was asking a basic question about lens choices and I was simply pointing out a potential misconception in the mind of a newbie when using a lens designed for one format on a camera with a different format.
What everybody was confused about was this sentence "A 50mm Canon EF will behave like a 64mm "cinema" lens on the EPIC" which seems to imply that a 50mm Canon EF lens would behave the same as a 64mm "cinema" lens would on the very same s35 sensor.
Personally I've never met a well behaved 64mm lens. Who makes that? Can I get it in Macro? APO or Aspherical? Does it breath too much? Can I pull focus? Will anyone notice?
But seriously guys, 50mm is 50mm. I wish we could get the writers to start some type of plot and character fetishes. If writers spent as much time obsessing over story and character as people seem to be spending discussing equipment, then we'd have some interesting stories to tell.
Yesterday I ran across an interesting thread about a BBC photographer who shot a short piece on a Sony consumer camera. I looked okay on Vimeo in HD, but the BBC chose to compress the hell out of it and, in the end, it really didn't matter which camera he had used. Any lens or camera would probably have look equally mediocre.
Take a deep breath and step back from obsessing about specs and resolving power and "Cinematic Lenses" whatever that means. Go out and light, block, focus and frame great images. In the end, the qualities of lenses that people spend endless hours discussing are a very small part of a much bigger picture...
Al
Sorry Al but you are 100% wrong. A 50mm lens is not 50mm when you are using it on a different size sensor. Frame is different, depth of field is different. (check the Depth of Field Tables in Meter pdf on pages 4, 38 and 68 for example:
http://www.zeiss.com/C12575690045D10...imes_Meter.pdf ) This forum is for cameras, lenses and equipment, not for script writers. So people discus for technical issues. If you want light, block, focus and frame great images you will need a cinema camera. If you want to tell a story you don't need a camera at all. You can do that with graphic animation etc. Lets all give a break to Michael Panfeld. He was trying to help. And after all he is right in all he said.
So...
About those lenses...?
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