. The Bell System technical journal . MILLIRADIANS -Sharpness of small-sized motion pictures at a viewing distance of 30 frequency band is calculated on the same basis as in Fig. 3. subjective amount would require that the frequency band be increasedfrom megacycles to about 10 megacycles. The diminishing returnin sharpness is possibly better illustrated by the continually decreasingslope of the curve in Fig. 4, in which the abscissa is proportional to thesquare root of the frequency band, a factor which may perhaps beinterpreted to represent roughly the cost of electrical transm
. The Bell System technical journal . MILLIRADIANS -Sharpness of small-sized motion pictures at a viewing distance of 30 frequency band is calculated on the same basis as in Fig. 3. subjective amount would require that the frequency band be increasedfrom megacycles to about 10 megacycles. The diminishing returnin sharpness is possibly better illustrated by the continually decreasingslope of the curve in Fig. 4, in which the abscissa is proportional to thesquare root of the frequency band, a factor which may perhaps beinterpreted to represent roughly the cost of electrical transmission overa long system. We might infer from this curve that transmission costsare likely to increase faster than image sharpness, other things beingequal. SUBJECTIVE SHARPNESS OF IMAGES 573 4. Horizontal and Vertical Resolutions The effect of unequal horizontal and vertical resolutions upon sharp-ness is shown in Fig. 5. The various rectangular figures of confusion,which were intercompared in a manner which will be described pres-. 115,000 u1 f ^^^ ^ ^^ V 2 H 2 <o
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
