Official Lumagen RadianceMini 3D thread. - Page 47 - AVS | Home Theater Discussions And Reviews
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Old 04-15-2015, 05:45 PM
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Interesting… seems like the problem you see is the polar opposite of what I see. I do think I may have figured out why I have the problem them… and it has nothing to do with neither of the two video processors… My HDMI cables are all redmere cables and those are directional. When I place the Darbee after the Mini 3D, I would need to change the direction of the cable and I didn't… going to check tomorrow if it may have been that simple.

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Old 04-21-2015, 01:05 AM
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Just got a Radiance Mini-3D and am really delighted with the results. However I am curious about what settings are really correct for my setup, which consists of a Oppo 95 bdplayer and a Sony VW-95ES projector.

Player: Set to Source Direct and HDMI YCbCr 422. I am unsure as what to set the bit depth and dithering to? If I set it to OFF, will the Lumagen do the dithering and bit depth processing?

Projector: Set to "Full" aspect ratio. No further settings need to be applied for it to recieve the Lumagen signal without altering it?

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Old 04-21-2015, 01:40 PM
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Drem:

Sounds like the Oppo is set up correctly.

For the Radiance select 4:2:2 output mode. This outputs 12-bits and the "Auto" dither setting (the default) is to not dither. For 4:2:2 output mode you wold only select dither to a lower bit depth than 12 if the TV/projector as a precision issue.

One example is a digital display with 60 Hertz refresh that shows some banding in dark areas. In this case dither to a lower bit depth may well mitigate the display's issues to some degree.

Generally I find that TVs built in the last couple year show less banding than earlier models. Still many digital displays have issue still. Many default to a lower Gamma setting (e.g. 1.8 rather than 2.2) to hide noise issues near black. So there are still issues in digital displays that you might need to consider when you calibrate, and when you select a dither setting.
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Old 04-22-2015, 08:23 AM
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Quote:
Originally Posted by jrp View Post
Drem:

Sounds like the Oppo is set up correctly.

For the Radiance select 4:2:2 output mode. This outputs 12-bits and the "Auto" dither setting (the default) is to not dither. For 4:2:2 output mode you wold only select dither to a lower bit depth than 12 if the TV/projector as a precision issue.

One example is a digital display with 60 Hertz refresh that shows some banding in dark areas. In this case dither to a lower bit depth may well mitigate the display's issues to some degree.

Generally I find that TVs built in the last couple year show less banding than earlier models. Still many digital displays have issue still. Many default to a lower Gamma setting (e.g. 1.8 rather than 2.2) to hide noise issues near black. So there are still issues in digital displays that you might need to consider when you calibrate, and when you select a dither setting.
Thanks for the input Jim ! The Oppo has all kinds of bit depth settings. 36bits, 30bits, etc. Does it even make any difference what I set this to when sending the signal to the Lumagen? 36bits or OFF?

Last edited by Drem; 04-22-2015 at 08:28 AM.
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Old 05-01-2015, 11:35 AM
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Quote:
Originally Posted by Drem View Post
Thanks for the input Jim ! The Oppo has all kinds of bit depth settings. 36bits, 30bits, etc. Does it even make any difference what I set this to when sending the signal to the Lumagen? 36bits or OFF?
I would assume that the first time Jim answered was in regards to the OFF setting you had cited and he said it was correct. By the way, OFF means standard 24-bit (no Deep Color) which is perfect for Blu-ray and DVD movies. Assuming you are just playing commercially released movies you will never encounter Deep Colour.

In my opinion it does not make sense to turn on these increased bit-depth options as all they would do is pad the data with extra zeroes. This only increases bandwidth requirements on your HDMI cable and may complicate the HDCP handshake process with your display.

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Last edited by AVfile; 05-01-2015 at 11:41 AM.
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Old Today, 07:09 AM
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AVfile is correct.

Consumer sources use compressed 8-bit 4:2:0, and deep color cannot provide any additional information. Even after points are moved in the RGB color space for calibration, 4:2:2 at 12-bits is more than enough to accurately respresent these sources. Deep color is not going to improve the quality, and as AVfile points out, it will increase the bit-rate and potentially can cause additional HDMI cable issues.

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