Over the past months Lumagen has been asked for a smaller version of the Radiance Pro for use in smaller systems, such as bedrooms that have limited space, or small enough to easily carry to a calibration job. Because of these requests they have added two new Radiance Pro units to the line-up: The Radiance Pro 4240-C and 4242-C (pictures above). The "-C" stands for "compact".
The 424X-C units are identical in hardware and function, and uses the same software, as current Radiance Pro 424X models. The only difference is the size: These new units are 11.3"W x 5.25"D x 1.75"H while the full size models which are 17"W x 10"D x 1.75"H. The front is similar to the Radiance 2020 except the IR sensor and LED have moved, and there is a Radiance Pro logo added. The back looks like the connector portion of the full sized Radiance Pro 424X. Pricing remains the same as the existing 424X models (while the case is smaller, the cost is dominated by manufacturing labor and production volume, and not material). 18 GHz upgrades are still available just like the current 4XXX models.
These new units are perfect for use with 4K panels where space may be limited but you still want perfect video and calibration. Our limited time $500 off discount on our advanced auto-calibration package still applies to these two new models, same as all other Radiance Pro units. Advanced auto-calibration allows anyone with little or no training to fully calibrate their display with almost no user input to almost 5000 points. It adjusts the display's grayscale, gamma, and colours to levels of accuracy that are simply not achievable by manual (hands on) methods. Just setup a few simple options in ChromaPure software, click "Auto-Calibrate", and then go have a cup of coffee while the process completes, usually in a few minutes. There is no need for the user to understand how calibration works. Suitable for all display types.
Joined: 06 Mar 2006 Posts: 15848 Location: Ottawa, Canada
TV/Projector: JVC DLA-RS56
Link Posted: Sun Aug 12, 2018 11:52 pm Post subject:
Radiance product status update:
Lumagen has now ended production of the Radiance 2020 and Radiance 2144 models. At this time they have sold out the Radiance 2020 inventory, and very few Radiance 2144 units are left in stock. To order, see: http://www.curtpalme.com/Radiance.shtm
Lumagen has switched to 1U (1.75" height) case style as the only option for the Radiance Pro 444X models. Previously a 2U (3.5" height) was also available. They are now out of 444X 2U cases, and so now all orders will be for the Radiance Pro 444X-1U. If you order a 444X, it will be in the 1U case from now on. Our order page has been updated. There is a minor exception to this: There are a few B-Stock 444X 2U cases left (contact us for details). These look "like new" but since they are B-Stock we need to make note of this. The supply of these B-Stock 444X 2U cases is very limited and will likely go fast.
Tech Tip - Letter Box Zoom:
We have updated the "Letter Box Zoom" feature in the 062718 and later releases. This is not the "LBOX" key, but does affect the function of this key. The Letter Box Zoom function allows you to choose to zoom aspect ratios to fill the height of the screen (Letter Box Zoom = on) when a higher aspect ratio than the screen is selected, or alternately (Letter Box Zoom = off) show the selected aspect in its "Letter Box" format with black bars above and below the image.
Letter Box Zoom is a holdover from the SD to HD transition period. It was used to zoom 16:9 content sent in a 4:3 raster (e.g. SD) to fill the height of the screen on a 16:9 TV. We feel this feature is outdated for most installations, but since it is in the software, we wanted to update Letter Box Zoom to work as expected. Note: The following discussion assumes you have the "output aspect ratio" set to match the screen aspect ratio.
Our current recommendation is that Letter Box Zoom be turned off for all source aspect ratios. For historical reasons this is not the default. Because of this we have added a special command, MENU 0966, which can be used to globally turn Letter Box Zoom on or off. Note that you can still use the Input Menu to change Letter Box Zoom on a per-input, per-input-aspect, and per-input-memory basis. Make sure to do a Save to make changes permanent.
As an example of Letter Box Zoom, if you have a 16:9 screen, and for 2.35 content you select 2.35 as the input aspect, if Letter Box Zoom is on the image will be zoomed in to fill the height of the screen and about 16% will be cropped off the left and right side of the image. If Letter Box Zoom is off for this case the image will not be zoomed in. So, the entire source image will be visible, and there will be black "letter box bars" visible at the top and bottom of the screen.
Tech Tip - LBOX button functionality:
The "LBOX" button is a special case source aspect ratio. It is used for a 16:9 source sent in a 4:3 raster. Consider a American SD source with 480 active scanlines. When the LBOX button is pressed the source is treated as a 720 (horizontal) by 360 (vertical) pixel 16:9 source. The top and bottom 60 scan lines are ignored. This is then treated the same way as an HD 16:9 image as far as aspect ratio control is concerned. For example LBOX followed by NLS on a 2.35 screen will stretch the 720 by 360 SD image to fill the 2.35 screen in the same proportions as pressing 16:9 and then NLS stretches the 1920 by 1080 HD 16:9 image to fill the 2.35 screen.
Tech Tip - New Source Aspect Ratios added:
We added two new source aspect ratios. These are 2.0 (press ALT and then 4:3 buttons) and 2.2 (press ALT and then 16:9 buttons), which are now being used for some sources. These have their own setup memory in the Input -> In Configs -> (in resolution #) -> Sizing menu. In addition the 2.40 (press ALT and then 2.35 buttons) source aspect ratio now has an independent setup memory versus the 2.35 (press 2.35 button) source aspect ratio.
Tech Tip - Delaying Input Select at Power-On:
A new issue was noted with initial power on with DirecTV receivers if selected at power on that gives bad color and bad audio. This only occurs after DirecTV box spends overnight in sleep mode. We have added the ability to delay the initial input select for three seconds longer than normal, which has resolved this issue in the known cases. This has only been noted with the DirecTV receivers, and only using a 9 GHz input card. However, this may affect other sources. This new feature is in the Other -> OnOff Setup -> Input Select menu in 062518 and later releases. Make sure to do a Save after any changes.
Tech Tip - Selecting a different JVC projector image memory for HDR:
We recommend that the Radiance Pro output colorspace be set to "SDR2020" (or "SDR709" if the projector/TV does not support Rec 2020) for HDR sources so the Radiance Pro can do the Tone Mapping for HDR. This is what we refer to as outputting HDR in an SDR container.
An optimization was requested by dealers that the Radiance Pro allow the HDMI output to assert the "HDR" Info Frame flag even though the HDR output is actually "in an SDR container" specifically for JVC projectors.
This works with JVC projectors since they use this "HDR flag" to select a different color management memory, but still allow its HDR Tone Mapping to be disabled. This allows for different image settings for JVC projectors for SDR and HDR, while still allowing the Radiance Pro to do Tone Mapping. If you have a JVC projector and want to take advantage of this new feature, you can enable this change (062718 release or later) by setting the Output CMS1 Colorspace to "SDR2020" or "SDR709" and then selecting "HDR Flag: On" in the same menu. Note that for this feature the HDR Flag does not affect the video data. Make sure to Save changes.
Note: This feature will not work with Sony projectors.
Tech Tip - When to select CMS Colorspace = SDR709 for HDR sources:
We have seen a couple projectors lock up when the Pro selects the Rec 2020 color space by sending the HDMI Info Frame flag for Rec 2020. This has happened on both a "HDR projector" (now fixed by the manufacturer), and a non HDR projector (a Dolby IMS 1000 based projector). When sent the Rec 2020 flag these projectors would go out for lunch and not come back until power cycled.
The solution was to select "CMS1 Colorspace = SDR709" for these projectors. This leaves the Rec 2020 HDMI info frame flag off for HDR sources. Because of this selection, to get correct colors you will need to do an SDR Rec 2020 3D LUT calibration for CMS1. Without the calibration the image will look okay but will have under-saturated colors. If you do this we strongly recommend using Lightspace for the 3D LUT.
Tech Tip: HDR Desaturation parameter:
There were some Radiance Pro owners who felt that Mad Max Fury Road explosions (such as at 28.29) and a specific frame with a lightning strike (28.53) had the "wrong colors" when using the Pro Tone Mapping. So we investigated if the Pro Tone Mapping was correct or not. We looked at the data on the disc and the Pro was outputting the colors from the disc correctly. In addition, we were able to contact one of the managing producers for Mad Max Fury Road through Jon Thompson (who wrote the Radiance Review linked on our website) and we were able to confirm from the producer that the colors rendered by the Radiance Pro Tone Mapping were correct.
However, some Radiance Pro owners still asked for a HDR Mapping parameter to allow these intense colors to be desaturated. We agree with the Pro owners point that due to the limited intensity output of projectors and current TVs that these colors should be desaturated to some degree since "if the scene was seen in real life the human eye would have desaturated the colors." So we added a new "DSat" control to the input HDR Mapping Parameter Menu. We selected a default of 4 out of the range of 0 to 15. This setting of 4 introduces a small amount of desaturation to the brightest, most saturated, colors (the lightning strike at 28.53 in Mad Max Fury Road for example), while not desaturating the propane explosions at 28.29. Settings of 8 and above begin to desaturate the propane explosions and other bright scenes.
It should be noted the DSat parameter will not have any effect on less saturated, or less bright, colors. So most source material, and even most frames of Mad Max Fury Road, will not have any visible desaturation applied even with higher settings of DSat.
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