Thanks for the info!
Am 28.10.2015 um 01:25 schrieb Chris Noellert:
DOF will be shallower than usual, since the horizontal fov per focal length
will be twice as wide, so be diligent with tracker markers. Again, tracking is
harder due to all these things.
Sorry to nitpick, Frank but this isn’t correct. Actually the opposite is true.
Anamorphic lenses tend to have an increased depth of field compared to their
spherical counterparts. Since anamorphic focal lengths are quoted at the
vertical fov, not the horizontal (which would be more or less half of the
vertical) they will exhibit a dof closer to that of a lens with a focal length
half the lens in question.
If you think in stills terms: a 50mm lens focused at 5m at f16 on both 6x6 and
on 35mm stills cameras, hyperfocal on the 35mm camera is almost two meters
passed the 6x6 camera hyperfocal. The 50 also looks like a 25 but that’s
essentially what you’re seeing with anamorphic lenses.
The *real* source of the issue is that the double horizontal fov of the quoted
focal length almost never represents the desired framing, so people move from a
50 to a 75 or to a 100 and then the dof scale compresses accordingly.
Ultimately the dof will be an artistic choice based on focal length, focus
distance, aperture and most importantly desired composition.
I know it’s splitting hairs, but I’ve heard this so many times and it’s better
that we pass on correct info to each other.
Best,
Chris
_______________________________________________
Nuke-users mailing list
Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
_______________________________________________
Nuke-users mailing list
Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
