First I checked the focus at its destined position. Then I started modifying for headtracking purpousis.
Pulling off the rubber ring from the objective.
I cutted a piece of black negative film roughly in shape to fit inside the rubber ring.
Ready to push it back.
Do not turn the lense during the process.
Now its ready, an infrared sensitive cam at 9.99 €.
The trackingdevice is a bit experimental for the blue jumpers can shut down the two upper ir-LEDs to make it a one dot set. (Not needed yet)Power is by USB.
2 mm cabonsticks, shrinkwrap, attached by hotmelt and a strap, light and stiff
Settings for the cam, If you have USB onboard sound, try to use not the same hub as the soundcard
Sometimes b/w has a worser framerate then colour.
