Watched my first UHD film via my 4240 last night, with only the basic IM settings as recommended by Gordon Fraser and information from the training manual.
I'm waiting on getting my Chromapure V3 upgrade so I can run a full calibration later, but this still looked very promising.
I watched Sully and had my JVC X7500 set to 2.4 gamma with only a 'base' calibration in the JVC (ie ready
for an autocal).
It is so much better than using the built in tone mapping function in my Sony X800: No obvious black crush, the image seemed subjectively bright enough (yet to measure of course) and I'm not using high lamp at this stage. Feeding the X7500 with 4k24 from a good source looked really sharp and of course I don't need (or have access to) any extra sharpening options when inputting 4k to the 4240, so it isn't an artificial sharpening effect. The image seemed really clean as well, which is great as noise can sometimes be a problem on the JVC.
I'm trying to use an old HD Fury Integral to split the signal out of the 4240 as I only have one HDMI output with the 18Gbs option fitted. The Fury (even after an update) was intermittent regarding sending audio to my Arcam AVR and needed me to keep flicking a switch to bring it back if I paused or changed source. As this isn't practical, I used the audio HDMI output from the 4240 instead.
The 4240 HDMI audio output worked well, but I did notice that the Arcam wasn't displaying 'Atmos' on it's front panel: I was getting Atmos sound as it displayed 'Atmos' when I pressed the 'mode' button on the AVR, but it would change back to display '--' after a few seconds. It also behaved in a similar way with 2.0 PCM audio from a PVR. Not sure if this is an Arcam glitch or something related to the settings or data sent from the Lumagen? It's not critical as it's only a display function (I have confirmed I get Atmos sound by using a test disc), but would be nice to get to the bottom of it.
I can't wait to be able to run a full calibration with the 4240/Chromapure 3 as I know how much better it looked when I calibrated my 2041/Chromapure 2 for HD/rec709.