Witam,
ostatnio z nudow czytalem jakis test nowego obiektywu panasonica i znalazlem takie stwierdzenie:
"Please note that four-thirds cameras have a different diffraction characteristic than APS-C or full format cameras. The real-world sweet spot, the point of highest resolution, is generally around f/4, maybe a little less. Therefore it's hardly possible to improve the performance by stopping down when using (such) slow speed lenses. Remember that f/8 on a four-thirds camera is comparable to f/16 on a full format camera so f/5.6 is actually already well sufficient to achieve a maximum amount of depth-of-field at conventional focus distances. "
czy to ma zwiazek z rozmiarem matrycy?
matryca w systemie 4/3 jest 2 razy mniejsza niz FF.
Jezeli f2 po cropie w 4/3 daje f4 to czy APS-C z f2 po cropie daje f3.2?
jezeli tak to (powiedzmy...) 50mm f1.4, na 7D staje sie 80mm f2.2?