Originally Posted by Ladeback
, awesome pictures and quality. Makes my 1080p setup look like really old technology.
Sorry for the long post.
I still use an old BenQ W6000 and since adding the OPPO 203, have discovered a new way to lift the image quality.
My pic is snapped with a camera phone.
The DLP technology had never been able to produce black at black for a full field. It does nice blacks when there are bright images around the black parts.
Whist Blu-ray has used rec709, the black level of video black is 7.5% or PC values of RGB16. HDR changed all that with blacks down to 0 and Dolby Vision throws yet another spanner in the works by disabling user controls.
So what I wanted was a set up where I can change between SDR, HDR and Dolby Vision without having to change the projector settings. Is this even possible? Yes, as it turns out, it is.
I cheated. My lamp is aging and becoming dull. HDR wants bright as does Dolby Vision. What I found was that DV disabled the OPPO controls but the projector controls still worked.
My cheat was to go to the 4x3 mode and find the the limits for DV which are far greater than those for SDR. With a ramps and plugs test patterns for SDR , tipically whites start to crush around contrast of 51 and brightness 44. With Dolby Vision, I can take contrast to 70 and raise the brightness to 50 whilst keeping the black floor. Because there is no DV test pattern, I used the 4x3 mode and the black bars of the letterbox as my reference. I used the scene in SWTLJ where Kylo smashed his helmet and cross referenced it with the salt fields at the final battle. In the end contrast at 69 was the brightest with no crush. Brightness was a 50. Gamma of 2.4 was used based on results from other people doing a similar thing.
For SDR and HDR, I used modes 1 and 2 of the user modes of the OPPO and both HDR and SDR test patterns to set bright and contrast in the player.
With projector contrast at 69, I have had to pull OPPO contrast down to -16 but the pattern reveals white out past 4000nits.
The BenQ can't display black to 0 so the best I can get is 2.5% for HDR with the 2% above video black bar being visible for SDR.
My images are brighter than they have been for a while with no crushing of the whites. Blacks are deep. Because the whites are not close to 100nits, I have had to pull down the colour saturation to just take out the sunburn look of skin tones . DV looks fine or I would reduce projector colour and leave the OPPO control alone.
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