I forgot to mention that with some zooms, the location of the entrance pupil will move relative
to the body as you zoom. and with some non-internal-focusing fixed length lenses, it will move
relative to the body as you focus.
Either of these is a bad thing in a dome port.
to the body as you zoom. and with some non-internal-focusing fixed length lenses, it will move
relative to the body as you focus.
Either of these is a bad thing in a dome port.