Micro Four Thirds offers some definite advantages over full frame when it comes to the size of the lenses, but what compromises come with it — and what role does equivalence play?
Landscape photographer, James Popsys, runs you through the difference between shooting on his Panasonic G9 and his Panasonic S5. If you’re thinking that full frame automatically clinches it in terms of image quality when shooting in low light, remember that you also need to consider equivalence, which Popsys explains.
One thing to correct Popsys upon: the Micro Four Thirds system may have a sensor with a ratio of 4:3, but — slightly confusingly — this is not how Micro Four Thirds gets its name. The 4/3” measurement actually refers to an antiquated system based on the vacuum tubes once used inside video cameras. For example, while you might think that the 1” sensor found inside the Sony RX100 might be huge, it actually measures 0.35 x 0.47 ” (9 x 12 mm). A Micro Four Thirds sensor (which is not a smaller than a Four Thirds sensor — that’s the same thing) measures about 0.71 x 0.53 “ (18 mm × 13.5 mm).
All of that before you try and get your head around equivalence. Good luck!