Optoma HD8300 Home Theater Projector Review
Optoma HD8300 Basic Settings
|Contrast||(1) 6||(-3) 7||(5) 6||(4) 3||(-3) -1|
|Brightness||(0) 0||(0) 2||(0) 0||(-2) 0||(0) 2|
In addition to calibrating Red Green and Blue for a correct grayscale balance (6500K), there are a number of other settings that come into play. Typically Contrast and Brightness (white balance and black balance), need to be done first. Color saturation and gamma also need adjustment.
Settings for measurements (default values are in parenthesis):
Lamp Mode= Bright (unless noted otherwise) NOTE: The Image AI lamp mode is the same brightness as Bright lamp mode.
All other settings at default (untouched)
Optoma HD8300 Post Calibration Grayscale: User Mode
Post-Calibration color temps, 20 – 100 IRE:
HD8300 User Mode
Average gamma = 2.24
Overall, that’s about as tight and nice a grayscale calibration as you will see.
Mike’s Notes: Grayscale is very good after calibration, as is gamma. A CMS is available, but not really necessary as Optoma has thoughtfully provided different color gamuts to choose from (see the enclosed CIE charts). So, you can get a fairly accurate Rec. 709 color gamut simply by choosing the HDTV color gamut. Even the default Native color gamut is not as oversaturated as some projectors. It’s one of the more accurate color gamuts I’ve seen from a DLP, particularly in this price range. More manufacturers should provide this option.
In 3D mode, you can use either the 3D picture mode or the User mode. I measured a white area on a 3D Blu-ray with both and got 657 lumens with User mode and 606 lumens with 3D mode
HD8300 RGB Settings
|User||Bright (Quick Cal)|
|Gain||R = 3||R= 5|
|G = 0||G= -15|
|B = -1||B= -5|
|R = -1||R= 0|
|G = 0||G = 0|
|B = -1||B= 0|
|Lumens at 100 IRE||757||886 (@ 6929)|
Calibration settings (default is 0):
Dynamic Black is OFF for User 1.
Bright mode is set to color temp Native.
Other settings are as shown on Page 1 or default.
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