Re: mtf and perceived sharpness

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mtf and perceived sharpness

Marc Wossner

29 Jan 2007 13:47

Hi, I´m a bit confused about mtf curves and perceived sharpness
because I found seemingly contradicting statements. Some texts say
that perceived sharpness correlates best with the 50% value of the mtf
(where contrast has dropped by half) and others state that the
important values for perceived image sharpness are between 0,5 and 2
line pairs per mm at a viewing distance of 13,5 inches. Are those
values related to each other (and is it due to my minor knowledge that
I do not see that) or are they really in conflict?

Thanks for your input!
Marc

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