Why does lower hz result in lower brightness when doing a vertical total tweak?

Adjusting BENQ Blur Reduction and DyAc (Dynamic Acceleration) including Blur Busters Strobe Utility. Supports most BenQ/Zowie Z-Series monitors (XL2411, XL2420, XL2720, XL2735, XL2540, XL2546)
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Jimbo
Posts: 4
Joined: 15 Mar 2021, 23:25

Why does lower hz result in lower brightness when doing a vertical total tweak?

Post by Jimbo » 19 May 2021, 12:52

Hey all, I've been using these timings for awhile:

1920x1080@120hz
Front porch 24,3
Sync width 32,5
Total pixels 1984, 1500
Pixel clock: 357.12 mhz

I cant hit a consistent 120 fps in a certain game I play and would like to try 85 hz. However, when switching the hz to 85 with those timings, the screen is dark compared to 120 hz. I was wondering why this happens and if it's possible to get the brightness I had when I was using those timings with 120 hz.

elexor
Posts: 169
Joined: 07 Jan 2020, 04:53

Re: Why does lower hz result in lower brightness when doing a vertical total tweak?

Post by elexor » 22 May 2021, 07:24

If your using backlight strobing lower hz will be dimmer unless the strobe is brighter to compensate.
some monitors allow a strobe length adjustment you can use this to make it brighter at the cost of more motion blur.

higher hz = more strobes per seconds = brighter.

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