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Optoma HD20 Projector Calibration and Settings1

Posted on October 16, 2013 by Art Feierman

RGB Settings

Calibration settings, mode:
User Cinema Quick Cal - Bright mode
Gain R (0)-5 (0)-5 0
G 0 0 0
B (0)-3 (0)-3 (0)-4
Bias R (-3)-2 (-3)-2 (-3)
G (-1) (-1) (-1)
B (-1) (-1) (-1)
Post Calibration
Lumens at 100 IRE: 701 673 965

Brightest Modes:

Let's talk maximum lumens. As my regular readers know, Mike Rollett took over doing all our projector calibrations a year and a half ago. We tend to see differently when it comes to setting up the "brightest" mode. Mike tends to try to maintain brightness, while making the picture a little better color wise. I, on the other hand, try to get out the maximum brightness, without the image quality suffering too much. My assumption is that you are using Bright mode (in this case) when you are fighting too much ambient light.

As a result, with this Optoma projector, Mike's "quick-cal" settings are not as bright as we would get if I had tweaked the Bright mode. Because we are both compromising image quality (but to different degrees), we don't have a way to consistently measure all projectors' Bright modes the same (other than by calibrating them for best possible picture, which ususally ends up with brightness pretty much the same as the "best" mode).

Optoma HD20 - Projector Screens

Optoma HD20 Projector Screen Recommendations

Since the HD20 is an entry level projector, I'll assume there isn't a huge budget for a screen. Depending on the room, you may choose a fixed wall mount screen (more expensive), a motorized screen (can be more or less than a fixed wall screen, depending on brand), or a low cost pull-down screen.

More important than that is choosing the right surface. There will be two primary questions to ask yourself. How much ambient light will you have to deal with (and where in the room is it coming from), and how large a screen (within reason)? Additionally, what will you be watching - primarily movies, or a mix including lots of TV, both sports and regular programming?

Since from an image standpoint, the black levels of the Optoma HD20 are purely entry level, many will be tempted to go with a high contrast gray projector screen surface. This will lower black levels a bit, a very good thing for this projector when watching movies.

This same type of screen will help with ambient light issues, if the ambient light is coming from the sides, be it your own lighting, or some light leaking in from mostly covered windows.

On the other hand, if you have pretty good lighting control and are, for example, a sports fanatic, and are more concerned with the next NFL game than watching The Dark Knight for the 4th time, then you might want to choose a white surface screen with good gain - 1.3 - 1.5. (An excellent example - and match -would be the fixed wall Carada Brilliant White, which I use in my testing room, for all the images in this review except for some sports shots). You can have even more gain if your seating is close to dead center (the higher the gain, the narrower the good "viewing cone"). Keep in mind, that even if you are sitting dead center, a high gain screen, say 2.3, is going to have the sides, and especially the corners of the image appear noticeably darker than the center.

So, what to choose? Based on the above, you might look at fixed screens from Elite or Da-lite (HC Gray and CinemaVision HC, respectively). Both are lighter gray surfaces, and good overall performance screens for the money. If you really want to try to drop down the black levels and have really good room lighting control, consider Da-lite's HC Da-Mat surface. Stewart makes a superb line of screens, but unless you are buying the HD20 as a "first projector" that you don't plan to keep long, and want a screen that will later pair well with, say a $3000+ projector, Stewart screens are probably more expensive than makes sense.

There are many other brands that make low to medium cost screens. I mention Elite, Da-lite, Carada and Stewart because I know their products best. Other well recognized brands that aren't overly expensive include Draper, Vutec, and Grandview, to name a few.

Again, match your screen to your room, and the type of viewing you are doing. I can't understate how much help a high contrast gray surface can make, though if you are stuck with some side lighting, it's not going to make your system perform like you don't have an ambient light issue. But it really will help, compared to using a white surfaced projection screen.

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