benalys

And if it says 3x zone, then on the tele size is 17.2mm. Then 17.2/3 = 5.73mm.So on the wide size it should be 5.7mm instead of 5.2mm.Then 24/5.7 = 4.2 crop factor.4.2 is between the 1/1.6(4.3...

Looks like the diagonal size is 10.9mm. See the red circled part of the attached image.10.9mm is close to the 2/3" which its diagonal size is 11mm.I would say that EX2F might have a 2/3" sensor.