Forum: Poser - OFFICIAL


Subject: Focal Length Value For An Exact 90 Degree FOV ?

3dcheapskate opened this issue on Dec 01, 2014 ยท 26 posts


bagginsbill posted Mon, 01 December 2014 at 8:13 AM

My measurement with 11mm shows much more than 90 degrees. Are you sure that's what you got?

I have observed that Poser has a focal length multiplier of 1.414 vs. the stated FoV for lenses on 35mm cameras. According to various calculators, a 35mm SLR produces a 90 degree FoV with a lens focal length of 18mm. Divide by 1.414 and you get 12.73 (approximately). When I put 12.73 mm into Poser, and measure my test object (which is the Poser BallCone - pointy bottom) the pointy part is exactly at the edge of my image.


Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)