井 寫:
lofan 寫:
Brian 寫:
我推薦F10給我的女友, 因外表沒有Sony, Cannon 咁型, 起初都不太接受....最"手羅"命係有日佢有d所謂識影相(DC)的朋友話: "
1600? d 相file size會大好多.....好難用....
.............................
不過最後我都成功遊說她上星期買了一部!
絕對係既唔識影相,亦唔識電腦!
好,香港多 d 咁o既人,我搵返份工易好多!
下? 咩理論呀... 點計出黎的
Indeed the size of the raw or jpeg file produced is related to the ISO sensitivity of the imaging sensor. At a higher ISO, intrinsically the sensor will produce more noise. These noise will be considered as data by the raw or jpeg compression algorithm, resulting in a larger file. It should be noted that the original image files do have exactly the same size at different ISO, because space is always allocated to store data contained in every pixel. As an example, a 6 megapixel camera capable of recording at 16-bit RGB will produce image files that are 36 MB. However, the size of the compressed jpeg file depends on the actual image it stores. At any given compression ratio, a monotonal image will always make a smaller jpeg than one that contains a lot of colours.