[stg新手]

因為成日見到大家講RAW我都唔知點解
希望大家可以話比我知
唔該

[Philippe]

係相機的最原始資料,平時睇到的jpeg是經過壓縮的共通影像檔案,再更改會增加失真.Raw的更改兼容度較大.

[Himalayan]

一般jpg每個Color用8bits (R, G, B = 8 X 3 = 24bits color)
RAW每個Color用12bits (R, G, B = 12 X 3 = 36bits color)

RAW就像底片,可在36bit color基楚上作修改,再convert to 24bit JPF File 而不失Quality. 冇Compression, 正

不過麻煩D

[Himalayan]

P.S. 冇Compression 是指RAW 儲存的Picture冇失真至岩....

RAW file 自己本身是有Compression, but Picture冇失真(non-loss compression)...

[stg新手]

咁raw同tiff比
係唔係raw質素好d呀

[Philippe]

係

[Himalayan]

除非部機用16bit 既TIFF啦,但依我所知好似所有機都只用8bit color TIFF...

TIFF 另一個唔好係File Size好大.
一個8M的RAW file (6百萬像)爆開8bit tif 有成18M, 16M tif 成32M 呀.