i have both lenses for my FS100, but i feel that the 16-50 is sharper than the CZ 24-70

people said 16-50 is par focal and CZ24-70 is not, but i have them the opposite way

My 16-50 is not par focal, and CZ 24-70 is surprisingly par focal

My 16-50 is not parfocal either. (even though they claim it is.)
My rough numbers from just the few people I've talked/emailed is about 3/4 of them are not parfocal.

Mine wasn't either but I used a cheapo mount adapter (with an aperture ring) and I wondered if that made a difference since par focal depends on very precise calibrations. Are you guys using Sony adapters?

yes, i use LAEA2

anyone use 24-70CZ? i wanna know how other people experience that lens on FS100. Since that lens is for full frame camera, is it because of that i don't get the footage as sharp as i get from 5Dmk2 with 24-70?

I feel that the SAL1650 do better in sharpness, but the color is not as good as the CZ2470