FOV value isn't accurate from what I can tell

[cgbeige]

I'm trying to do a comp match for something and trying to match the focal length. Octane shows an fov of 45° but Maya's focal length to match it is 25°. Is there some sort of camera back setting I need to change to get this to work at 45° or is Octane's value inaccurate?

[radiance]

octane uses field of view angle in degrees,
maybe maya uses a different lens unit ?

Radiance

[ahooo]

FOV can be measured horisontally, vertically or diagonal... Don't know which one Maya or Octane uses, but my guess is that they're measuring different angles

In 3ds max, the camera object has separate inputs for these three FOVs, maybe Maya has too?

[face]

FOV and focal length are two differnt things.
Focal length is in Softimage a length in mm. The focus point where the camera see sharp. This should be used for e.g. DOF.
FOV are the angle who the scene is seen.

[face]

Another question i have, how can i use the focaldepth option?
I mean, give it a similar parameter in a 3d-package?

[radiance]

Another question i have, how can i use the focaldepth option?
I mean, give it a similar parameter in a 3d-package?

it's not yet hooked up,
on my list for 2.2

Radiance

[cgbeige]

ya, sorry I said FOV when I meant angle. I was using the angle value and having to do 25° in Maya to get it to match the 45° value in Octane, even with the crop dimensions set the same.

This would be a lot easier to do with an FBX camera import/export - at least that way, I wouldn't have to reposition the camera, I could just tweak the angle value. As it is, it's a very finicky thing, trying to match them.

[radiance]

ya, sorry I said FOV when I meant angle. I was using the angle value and having to do 25° in Maya to get it to match the 45° value in Octane, even with the crop dimensions set the same.

This would be a lot easier to do with an FBX camera import/export - at least that way, I wouldn't have to reposition the camera, I could just tweak the angle value. As it is, it's a very finicky thing, trying to match them.

we fixed a bug in RC1 that's now fixed in the new final i just posted,
that resolved the other issue, eg the camera being not correct horizontally.

Radiance

[cgbeige]

ok - it looks like it's sort of fixed. Default camera and angle is matched:

http://grab.by/41gT

But when I try and change the angle to 80 and do some simple translates, the offsets are completely different:

http://grab.by/41hl

[cgbeige]

ok - it looks like the problem is that the "pos" Y and Z values rotate the camera, not translate it.