[ricwhite]

I get huge flucuations in calibration numbers depending on what the "auto iris" is set to. Is the iris supposed to be "on" "off" or "auto" during calibration. Thanks in advance for your help.

 

[TomHuffman]

Calibrate it with the iris setting you plan to use when viewing.

 

[ricwhite]



Quote:
Originally Posted by TomHuffman /forum/post/0


Calibrate it with the iris setting you plan to use when viewing.

That's a problem. When viewing sports and "live" shows, I turn off the iris. It's totally open allowing as much light as possible. When viewing movies, I set the iris to "auto" which allows the iris to open and close in increments depending on the brightness of the scene.


Since the iris in auto is always adjusting, it seems to be an inaccurate way of setting contrast and brightness levels. I was just wondering if there is a "right" way to calibrate auto-iris projectors or not. I'm leaning toward adjusting with the iris "off", but want to confirm this is the best way.

 

[CT_Wiebe]

ricwhite -- This subject has been discussed in several different threads (relative to the HS 51 and other AI PJs). The consensus seems to be that you should do an initial calibration with the "Auto-Iris" turned off. You then go back and recheck the grayscale (the widow patterns at various stimulus - intensity - levels from 0% to 100% white) and other parameters with the "Auto-Iris" set as you would when watching DVDs ("ON" in your case).

Note: Color and Tint should be set with the "Auto-Iris" Off, in any case, IMHO.


AVS member lovingdvd was one of the first to raise this issue (IIRC).