a6300 vs a6500 perché sony prende in giro i suoi clienti?

“ Il sensore più grande inciderà sui costi ma non credo così tanto da avere queste differenze „

“ Depending upon its composition, (for example, high-resistivity silicon wafers have much greater electrical field depth -- and broader spectral response -- than low-resistivity wafers) an 8" diameter wafer could cost as much as $450 to $500, $1,000 or even $5,000. After several hundred process steps, perhaps between 400 and 600 (including, for example, thin film deposition, lithography, photoresist coating and alignment, exposure, developing, etching and cleaning), one has a wafer covered with sensors. If the sensors are APS-C size, there are about 200 of them on the wafer, depending on layout and the design of the periphery of each sensor. For APS-H, there are about 46 or so. Full-frame sensors? Just 20. „

“ Consider, too, that an 8" silicon wafer usually yields 1000 to 2000 LSI (Large-Scale Integrated) circuits. If, say, 20 areas have defects, such as dust or scratches, up to 1980 usable chips remain. With 20 large sensors on a wafer, each sensor is an easy “target.” Damage anywhere ruins the whole sensor. 20 randomly distributed dust and scratch marks could ruin the whole batch. This means that the handling of full-frame sensors during manufacture needs to be obsessively precise, and therefore they are more expensive.
Of course, there is more to this topic. For example, the circuit pattern of a fullframe sensor is too large to be projected on the silicon wafer all at once; it requires three separate exposures (See page 53). This means that the number of masks and exposure processes is tripled. For now, appreciate that a full-frame sensor costs not three or four times, but ten, twenty or more times as much as an APS-C sensor . „

“ e per quanto riguarda le ottiche? quelle FF costano anche loro 10 volte quelle apsc e m4/3? „

“ 8-10 se non viene riferito a qualcosa vuol dire tutto o niente, 10 volte di 10€ è una cosa, di 100 gia cambia, quindi quell'estratto ha la stessa validità di un affermazione da forum MrGreen se gli aggiungi che è del 2006 allora.... „