Very much so. I-BMP iqulethe imiqolo ye-RGB engacocwanga engacocwanga enesihloko esincinci, ngoko ke ayilahleki ngokupheleleyo kwaye ikhulu — rhoqo 10-20x ubungakanani bomfanekiso ofanayo njenge-PNG. That determines both the headroom available and whether the saving costs you anything in fidelity.
Yes — kuba akukho nto icinezelweyo, i-BMP ikhawuleza ukufunda nokuhlela kodwa iphazamisayo ukulayisha, kwaye ayithuthi i-metadata yokugcina. It is worth knowing before you overwrite an original you might need again.
Yintoni impazamo eqhelekileyo xa uxinzelela BMP images?