20
LENS CONTROL IN PROJECTION
Optimo Prime lenses are all adjusted and controlled in factory using a specific projection configuration to be the closest to the final use
configuration. We are using within our lens projector a 3mm thickness additional neutral glass between the reticule and the Optimo Prime. This
glass is designed for the simulation of optical low pass filters, ND filters and camera sensor protection glass of the ARRI Alexa series or
cameras with similar light path.
If you need to control your Optimo Prime in projection, we recommend you to use the same configuration to see the correct image.
If you don’t
use any additional neutral glass you will have back focus issue and you may also see optical aberration such as field curvature.
If your lens projector doesn’t allow you to position such a neutral glass, you can purchase a 5mm thickness rear filter for Optimo Primes
(reference 66066496AA). To use this dedicated 5mm thickness rear filter you only need to untighten and remove the standard filter of your
Optimo Prime and put in place the dedicated rear filter. The filter thread is 46mm and should be mounted on rear barrel reference 400005545.
CAUTION:
Please only use the 5mm thickness rear filter for projection matters.
Lens projector configuration with 3mm
thickness glass between reticule and
Optimo Prime lens
Rear filter to swap from standard to
5mm thickness for projection use only