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"RE: Confusion"

SVA Registered since 26th Jun 2004
Sat 18-Feb-12 08:55 AM

My favourite Fuji Superia Reala delivers 125 lpm (not 125 black lines on every millimeter of white field, but 125 passes from white to black and from black to white, or 60 real lines). Good Nikkor lenses have about the same resolving power (60 real lpm). To record all this information even if lines are not parallel to photosites rows on the sensor, one need pixel density multiplied by square root of two - or 180 pixels per millimeter, for 24*36 frame it is 4320*6480 photosites, or 28 megapixels. Some Leica glass resolves better, and some special-purpose films (for example "KGB" MZ3L - extremely contrast B&W slides, ISO 3 - for microfilms) are capable to record this difference - so 60MP is real, if you can afford a half-ton, half-megabuck drum scanner.

Vladimir
Russian Nikonian in Switzerland

A general, generic topic Confusion [View all] , Roland DG , Thu 16-Feb-12 06:06 PM
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