There are now five "nearly pocketable" cameras with DSLR size sensors, the Sigma DP1 and DP2, Olympus EP1, Panasonic GF1 and Leica X1, and they all have something else in common: no viewfinder built-in, only an LCD and optional accessory OVF or EVF.
It seems that building in any kind of adequate VF into these sleek, small bodies is very difficult, despite smaller compacts having them, but I am not sure why.
- Is it the fact that the lens, sensor and the optical cavity between them overall takes up a lot more volume inside the camera body that in smaller sensor compacts, so these bodies actually have less room left over than some compacts for a worthwhile built-in VF?
- Is it the goal of "sleekness": that a VF of adequate performance would be require a lump on top, as in the G1?
- Is it a judgement that a large proportion of potential customers will be comfortable with the "two-eyed" (rear screen) composition tool, and prefer the reduced bulk achieved by omitting a "one-eyed" VF?
- Or something else?
Olympus has hinted at its next m4/3 body having an EVF without being much bigger than the EP1 ... but maybe that will be an accessory as on the GF1.