is there a lens multiplier? at DVinfo.net

Stephen Eastwood · July 5th, 2007, 11:14 AM

when using one of these adapters do the 35mm lenses work at the 35mm field of view or at multiplier of that number?

Stephen Eastwood
http://www.StephenEastwood.com

Michael Maier · July 7th, 2007, 12:08 AM

Hi Stephen.
No there's no multiplier when using 35mm Cine lenses. That's the advantage of a 35mm adapter as opposed to a normal mechanical mount adapter like the Canon EOS. A 35mm adapter will keep the same field of view and DOF characteristics of the 35mm cine lenses you use.

Giuseppe Pugliese · December 15th, 2007, 02:26 AM

i thought i heard somewhere that there was a 1.6x factor for lenses on the mini? is this true?

Jaron Berman · December 15th, 2007, 05:25 PM

you're thinking in relation to a 35mm STILL camera's frame. It may be about 1.5 - 1.6x the magnification compared to a STILL camera full-frame 35mm. But motion picture film runs vertically (in most instances), so you're dealing with a smaller frame than still photography 35mm film which runs horizontally. A standard 35mm still frame is 24mm high by 36mm wide. A 4-perf full aperture 35mm frame is 18.7mm high by 24.9mm wide. The still frame is a fair amount larger than the motion frame, therefore for any given focal length, the field of view will be wider.

However, you probably won't ever hear someone complain that the DOF of a mini35 is too deep in relation to a still camera. The mini and pro 35 do the same thing with the same resulting "frame." They are simply intended for different cameras. Both approximate the field of view and depth of field of 35mm motion picture film, not still film.

July 5th, 2007, 11:14 AM	#1
Stephen Eastwood Major Player Join Date: Jun 2007 Location: Great Neck, NY Posts: 291	is there a lens multiplier? when using one of these adapters do the 35mm lenses work at the 35mm field of view or at multiplier of that number? Stephen Eastwood http://www.StephenEastwood.com

July 7th, 2007, 12:08 AM	#2
Michael Maier Trustee Join Date: Apr 2005 Posts: 1,269	Hi Stephen. No there's no multiplier when using 35mm Cine lenses. That's the advantage of a 35mm adapter as opposed to a normal mechanical mount adapter like the Canon EOS. A 35mm adapter will keep the same field of view and DOF characteristics of the 35mm cine lenses you use.

December 15th, 2007, 02:26 AM	#3
Giuseppe Pugliese Major Player Join Date: Dec 2005 Location: New York Posts: 392	i thought i heard somewhere that there was a 1.6x factor for lenses on the mini? is this true?

December 15th, 2007, 05:25 PM	#4
Jaron Berman Major Player Join Date: Mar 2006 Location: Los Angeles Posts: 439	you're thinking in relation to a 35mm STILL camera's frame. It may be about 1.5 - 1.6x the magnification compared to a STILL camera full-frame 35mm. But motion picture film runs vertically (in most instances), so you're dealing with a smaller frame than still photography 35mm film which runs horizontally. A standard 35mm still frame is 24mm high by 36mm wide. A 4-perf full aperture 35mm frame is 18.7mm high by 24.9mm wide. The still frame is a fair amount larger than the motion frame, therefore for any given focal length, the field of view will be wider. However, you probably won't ever hear someone complain that the DOF of a mini35 is too deep in relation to a still camera. The mini and pro 35 do the same thing with the same resulting "frame." They are simply intended for different cameras. Both approximate the field of view and depth of field of 35mm motion picture film, not still film.