View single post by chrisbet

Posted: Wed Feb 28th, 2024 19:10

Joined:	Fri Feb 8th, 2019
Location:	Leigh On Sea, Essex , United Kingdom
Posts:	1422
Status:	Offline

On the Sony FS5 you can select shutter speeds of 1/6 to 1/10,000 so faster than a D850 but not as fast as a Z8/9. If I understand the DOF correctly it is aperture and focal length that determine it for a given distance, i.e. F number - even with still cameras if you want to control DOF for a given f number you would use filters to reduce the light.

That brings me on to another interesting thing - cine lenses have T numbers, not F numbers, the T number being the light transmission of the lens - 2 lenses of say f2 may actually pass different amounts of light to the sensor and have different T numbers - one might be T 2.1 and the other T 2.2, I wonder why the stills world doesn't use T numbers, maybe the manufacturers would not want us comparing the quality of their competitor's lensses?

Last edited on Wed Feb 28th, 2024 19:10 by

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