I just bought a used set of cine primes (Canon CN-E 14, 24, 35, 50, 85, and 135) from LensAuthority.com. These are the first cine lenses I've owned. I've been playing around with these and think they may need some calibration, but am not sure.
How accurate are the focus distance scales supposed to be? I've heard very accurate... which makes me think these are off.
With the camera stationary, I am measuring from the sensor plane to a point in focus directly in front of the lens, and I'm finding the focus markings on the lenses to be off, sometimes by a few inches. The 50 seems to be dead on though.
Is it common for cine primes to go out of 'calibration'? Is it something that can be corrected? I'm a CPS Platinum member and am thinking about sending them in to be looked at, but figured I'd ask around first.
The lenses were advertised as being in 'excellent' condition, and they appear so - the glass is flawless, and the housings show no dents, dings, scrapes, or other signs of abuse. Being new to cine lenses, I guess I'm just not sure what to expect. Perhaps I'm not even testing them correctly.
Any insight or advice is appreciated!