Lenses have response limit at 200 lp/mm.Ok.Every lens have itself MTF response.Example:at 10lp/mm MTF response is ~90%,at 100 lp/mm is ~70%,etc.We saw that MTF response is falling down for higher spatial frequencies.
CCD has limited spatial resolution at some value.For 2/3 inch CCD, 100 lp/mm is limiting value.Now if we include consideration about lens and CCD, conclusion is that all spatial frequencies above 100 lp/mm could not be resolved.And if lens have MTF response ~70% at 100lp/mm it means that MTF response above 100 lp/mm is cutted.
But,what happened with 35 mm CCD in Sony F35? Resolution of it is same, 1920 px (5760px, but three for every primary;1920 effective pixels), but CCD's width is 24 mm and spatial resolution is limited at 40 lp/mm. It is same story, MTF response above 40 lp/mm is cutted.
If my consideration is right, resolving power of 2/3 inch CCD is better than with 35mm in F35.What it exactly mean?Does F23 give picture with better sharpness (measurable resolution) than F35?
Edited by Krstic Zoran, 24 March 2009 - 03:33 PM.