jeetsukumaran Offline Upload & Sell: Off
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p.1 #1 · p.1 #1 · Ensuring the sensor plane is parallel to target plane when calibrating/testing | |
I am thinking of getting the Reikan FoCal.
From what I can make out, it does not have a facility to ensure that the camera sensor plane is parallel to the target, like I think LensAlign has.
I can make sure that the target is mounted flatly on a wall that is truly perpendicular to the floor, and I have a leveling base + pan/tilt head + various spirit levels to ensure that the camera is level on that same floor. So I think I can solve the rotation in two planes ("pitch" and "roll" if we were on an aircraft?). But I am not sure how to make sure that everything is kosher on the other plane ("yaw" if we were on an aircraft).
I've often wondered how people do this not just when calibrating but also testing lenses. I've seen references to laser jigs or mirrors but have not come across actual descriptions on how these are done.
Can fixing the "yaw" be done without specialized (or rather, expensive) equipment? Or otherwise achieved reliably and cheaply with some simple equipment or techniques?
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