On 9/8/03 1:39 AM, Shangara Singh wrote: > Ah, the back of the hand trick, works best when you are naturally suntanned! > <g> My understanding is film reacts differently because the recording curve > is not linear. OTOH, digital cameras devote more levels to the "toe" and > proportionally, like f stops, less and less as you climb towards the > "shoulder." There's a good explanation on the Luminous Landscape site. Pity > it's not on the manufacturer's sites or in their manuals!
Maybe I've misinterpreted LL site: it appears that the "toe" (shadows) of the curve is the one that suffers most with the least amount of available levels, not the shoulder (highlight). And I quote: "..... A 12 bit image is capable of recording 4,096 (2^12) discrete tonal values. One would think that therefore each F/Stop of the 5 stop range would be able to record some 850 (4096 / 5) of these steps. But, alas, this is not the case. The way that it really works is that the first (brightest) stop's worth of data contains 2048 of these steps � fully half of those available." Mark =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
