k2viper wrote:Strobe crosstalk is more visible then on my VG278H 120hz lightboost 10%, but maybe panel needs more warming up, after 30min usage it crosstalks less then right after "cold boot".
On 144hz and 120hz crosstalk is present too. I will experiment with VT tweaks soon.
Please do.
Follow Appendix A of
www.blurbusters.com/crosstalk for creating working custom vertical totals from an existing mode. (Basically in ToastyX CRU, copying the 240Hz mode, locking the Pixel Clock, then increasing the Vertical Total in order to force the refresh rate to go down while maintaining Pixel Clock). 240Hz gives you about 4ms of VBI time at 120Hz+Large VBI. If strobe crosstalk is more intense at top or bottom, try transferring pixels between Vertical Front Porch and Vertical Back Porch. This may force the monitor to bring the strobe pulse earlier/later, shifting the crosstalk zone upwards/downwards. Different monitors have different strobing behaviours.
k2viper wrote:I took some pictures, but I think you dont want to look at standard package and display body pics, but crosstalk shots I took look very smeared, I need to try different camera or camera settings.
Usually, you need to use a
pursuit camera technique to successfully capture WYSIWYG motion blur photography. Formerly the domain of scientific laboratories, I'm the creator of the simplified/inexpensive blogger-friendly pursuit camera technique now used by others (e.g. RTINGS, TFTCentral, pcmonitors, etc).
However, for strobe backlights since it's a near-instantaneous-flash, it's possible to analyze strobe crosstalk via a stationary photograph. Point your smartphone at screen, adjust exposure exactly, then snap. Simply make your camera exposure no more than one refresh cycle (e.g. 1/240sec or faster for 240Hz), use a 3rd party camera app to give your smartphone manual exposure adjustment.
That said, top, center, and bottom can have different amounts of strobe crosstalk -- this is because the pixels are refreshed at different times during a refresh cycle (top to bottom scanout) -- before the global backlight flash of a blur-reducing strobe backlight. As a result, crosstalk can be different due to differing levels of incomplete LCD GtG pixel transitions at the time of the visible flash. We have found ways to adjust/reduce this via strobe phase, length, and Large Vertical Totals, explained in
Advanced Crosstalk FAQ -- but it only works as long as the monitor co-operates.