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Hi
Does the AMA setting on Benq affect calibration? Does it affect colour accuracy?
Thank you
If it causes huge overshoot/undershoot artifacts and you have an extremely fast device… maybe.
Since this issue is usually measured in monitor reviews, google it, also if it is an issue it should be visible by scrolling artifacts in leters in a browser.Thanks.
I have 2 monitors:
-A TN panel BenQ that is supposed to be 2ms G to G and has to have AMA to eliminate ghosting. However, the AMA introduces some invert ghosting.
-A VA panel Benq with very nice black and colour reproduction (as expected from a VA panel) but much slower with ghosting when AMA is off. Any AMA setting will reduce the ghosting but introduce invert ghosting like on the other monotor (the usual blue fringe).
I am not sure that I understand the recommendation in your reply: There is visible invert ghosting on both monitors with AMA enabled (at any setting) and a lot of ghosting akin to motion blur when AMA is off.
I am worried that AMA off will lead to the patches blending into each other when calibrating and that AMA’s invert ghosting will affect calibration!
Can I delay the speed at which the patches show so I can safely turnn AMA off when calibrating? Would you recommend that?
You have replied to several of my posts on ehre and I want to thank you for your help.
Maybe “overide minimum display delay” on 1st tab, but I’ve not tested it and IDNK if your overshoot/undershoot artifacts because AMA are faster or slower tan default delay.
I meet BenQ displays often enough. I did not compare results with and without AMA, usually I switch it off, it when I forget to do it I get similar good results. Seems not to have real influence to process. I note that I usually raise display update delay up to 45-80 ms, but this factor influence is also uncertain. Better to make comparative test.
UPD: 2ms is simply marketing lie, read some deep review of pixel GTG delay phenomena, actually this delay is +/- 20ms for complete pixel switch for many displays. Think on: you don’t have need in 2ms switch time for 75Hz or even 288Hz horizontal frequency.
Hm, I’ve never seen ghosting without AMA on BenQ display. What are your models? I meet BenQs of IPS type in most cases. TN display is useless for HQ image editing, VA is sometimes used by vieographers cause of 3000:1 contrast ration. Check, if ghosting is visible at some angles only. Measurement device looks to center of display in orthogonal direction, so you should check colors in the same way, better to make some steps away of display.
Check also image at different frequencies, including 59/60 Hz modes and so on. Sometimes I meet radical contrast change here. Display internal engine render image with different internal parameters at different frequencies for unknown cause.
Sorry to spam with my many questions but I just got my i1 display and am tryting to understand a few things.
About the target brightness (120cd/sqm). Wouldn’t reducing the brightness from 300cd/ sqm to 120 (or anything below 300cd/ sqm) reduce the tonal range of the display (the monitor can not display as many tones as with its maximum brightness)?
If you mean colorspace xy, like in photo or Rec709 video, no. It’s just backlight. “Y” from CIE xyY. RGB primaries (“saturation”) remain the same.
If you mean absolute colorspace, like in HDR yes & no. Static contrast ratio of these displays is near constant. If you rise brightness you cover absolute colorspace upwards and at the same time you loose it downwards (black)
