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REVIEW: Eizo CG246 Part 6


Deinterlacing

Because LC displays are invariably based on progressive scanning, they require a deinterlacer when playing interlaced sources.

We checked the deinterlacing quality by running interlaced image sequences with a 3:2 and a 2:2 pulldown, and then a true video source with non-interlaced sub frames. For the first two test cases, the deinterlacer would ideally reconstruct the original image sequences losslessly.

In order for the GC246’s deinterlacer to detect interlaced images, Film Detection needs to be enabled in the OSD settings. In our tests, unfortunately, we were not able to get the deinterlacer to detect 3:2 and 2:2 sources reliably and permanently. The result was a lesser resolution quality.

Detection of 3:2 und 2:2 sources was successful...

...but not very stable.

Processing video material, on the other hand, posed no major problems to the deinterlacer. If it does get overloaded with challenging scenes that have a large amount of compression and a reduced amount of motion, it can help to disable the Film Detection setting. This switches the monitor to video-only mode.

Testing video-mode deinterlacing.

Signal level and colour model

The Eizo CG246’s HDMI input is used for processing digital RGB and YCbCr sources. Adjusting the dynamic range, which is usually necessary for video data, is only possible via the Range Extension setting.

Note: The tonal value spread assumes a signal without BTB but with WTW content (16-254 at 8 bits per channel). In order to properly display a signal without WTW content, this needs to be transformed before the input, and Range Extension needs to be disabled. Hopefully, Eizo will provide more compatibility in this regard in the future.

‘Range Extension’ function.

Illumination

Illumination on the test unit was flawless. Even at maximum brightness and photographed with a long exposure time, the screen only showed minimal irregularities. Viewed front-on, there were virtually no lighter areas caused by viewing angles.

Monitor illumination with a short exposure (left) and a long exposure (right).

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3 Comments available


Thanks for this review, I bought this display, by far the best one I've owned.
I'd need an information: I 'm about to buy a device that use hdmi to output a 10bit video signal, but only dp is 10 bit in the 246; so is enough to use a hdmi/dp cable or adapter or I'll have 8 bit signal?

sam
I'm unable to guarantee that. You will need a HDMI to DisplayPort converter - not a simple cable - because of different protocols used. A 10bit workflow is in principle not a problem but it depends on the capabilities of this converter.
Perfect, I'll look for a proper converter,
thanks a lot

best regards
sam

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