Color Blind ! Help!!! (1 Viewer)

[Paul_Saul]

I recently had a chance to do a side by side comparison of an Optoma 755 and a Panasonic 711XU. To make it a far comparison I did a quick and dirty calibration with video essentials. The problem was that when the input to these projectors came from a computer (I had the V.E. DVD in the salesman's portable pc) the color and tint controls on both projectors were disabled!!! (note the cpu to projector connection was via a VGA cable).

We switched to a DVD player and an S-video connection to the projectors and the color and

tint controls were back.

I want to use an iScan Pro for my sole connection to the projector (480p). I have been in contact with someone who is using the iScan Pro with an Optoma projector.

They confirm that the color and tint controls

are disabled while doing this. I suspect that

many projectors (not just Optoma and Panasonic) behave this way. I realize that

the iScan Pro has a color control (but no

tint), so finally my question is...

How do you properly calibrate the color and hue/tint for projectors? Is the iScan's color control enough?

Please help....

 

[Christian Dolan]

Paul,

It’s common to have these adjustments disabled for RGB inputs. They intend for you to do all tweaking with the R, G, and B controls.

Besides, you don’t have tint issuses, since these only apply when you have modulated both R-y and B-y signals onto a common sub-carrier signal, as in composite and S video.

-Christian

 

[Paul_Saul]

Thanks. But what if the projector is DLP - it doesn't

have separate RGB controls.