Optoma HD8600 Projector – Revisited – New Iris Posted on September 14, 2010 By Lisa Feierman Greetings all, OK, I’m finished with the Optoma HD8600 projector. They improved the firmware, affecting the Cinema 1 iris setting – it’s very smooth, but doesn’t lower the blacks as much as the troublesome Cinema 2 setting. Not perfect, but better! The full update has been added to the review, and is found on the HD8600 Update page. Enjoy. -art