Blur Busters Forums

Posted: **09 Jan 2026, 00:50**

Is it rolling scan
Line buffer

Posted: **09 Jan 2026, 02:58**

derekchan wrote: ↑
09 Jan 2026, 00:50
Is it rolling scan
Line buffer

C1 had rolling scan because it was able to do sub-refresh updates on its panel.

C2 and all later models have standard BFI because LG Display removed the capability to do sub-refresh panel updates, probably to reduce costs.

Posted: **09 Jan 2026, 04:33**

Baron of Sun wrote: ↑
09 Jan 2026, 02:58

derekchan wrote: ↑
09 Jan 2026, 00:50
Is it rolling scan
Line buffer
C1 had rolling scan because it was able to do sub-refresh updates on its panel.

C2 and all later models have standard BFI because LG Display removed the capability to do sub-refresh panel updates, probably to reduce costs.

Where do you find these information about c1?
Standard bfi mean insert a black frame ?
How about bfi of sony x900e?standard backlight strobe on off led backlight?

Does quest 2 vr standard backlight strobe?how does it achive 0.3ms clarity even better than crt? Compared to 120hz bfi of c1 only get 4ms clarity?

Can you share more about line buffer anf scan out type of c1?are they built in good shit in c1?

Can you provide source about sub refresh updated?
Are they top of bfi type?
Does rolling scan of c1 same as pvm2541's flicker free to use rolling scan to reduce 24p frame hold time blur from instant response time of oled?

Posted: **09 Jan 2026, 07:27**

derekchan wrote: ↑
09 Jan 2026, 04:33

Baron of Sun wrote: ↑
09 Jan 2026, 02:58

derekchan wrote: ↑
09 Jan 2026, 00:50
Is it rolling scan
Line buffer
C1 had rolling scan because it was able to do sub-refresh updates on its panel.

C2 and all later models have standard BFI because LG Display removed the capability to do sub-refresh panel updates, probably to reduce costs.
Where do you find these information about c1?
Standard bfi mean insert a black frame ?
How about bfi of sony x900e?standard backlight strobe on off led backlight?

Does quest 2 vr standard backlight strobe?how does it achive 0.3ms clarity even better than crt? Compared to 120hz bfi of c1 only get 4ms clarity?

Can you share more about line buffer anf scan out type of c1?are they built in good shit in c1?

Can you provide source about sub refresh updated?
Are they top of bfi type?
Does rolling scan of c1 same as pvm2541's flicker free to use rolling scan to reduce 24p frame hold time blur from instant response time of oled?

https://www.youtube.com/watch?v=3ywOgW_Il9c

Here is a video showing it. Standard BFI is only capable of darkening the entire screen until the next frame overwrites it. Rolling scan with variable height of the dark area is only possible with sub-refresh panel updates.

I think as soon as the TV allows for more than 1 Motion Pro setting, it's a hint it is sub-refresh because standard BFI is restricted to the maximum panel refresh. If the panel refreshes at max 120 Hz and has no sub-refresh strobing or rolling scan, it is just possible to do 60 Hz strobing at 60 fps. This is why the C2, C3 and so on only have the Motion Pro setting On and Off, and no Low, Medium and High. For LCD I assume most do backlight strobing, and this is mostly independent on the max panel refresh because it is related to the state updates of the liquid crystals and not to the updates of the backlight, these are two different processes.

Posted: **10 Jan 2026, 19:23**

Motion pro medium is probably full screen BFI.
Motion pro High is probably rolling scan bfi.
I have lg c1 . i will make slow motion video, but i can only make 240fps slow motion.

Posted: **17 Jan 2026, 04:05**

Baron of Sun wrote: ↑
09 Jan 2026, 07:27

derekchan wrote: ↑
09 Jan 2026, 04:33

Baron of Sun wrote: ↑
09 Jan 2026, 02:58

derekchan wrote: ↑
09 Jan 2026, 00:50
Is it rolling scan
Line buffer
C1 had rolling scan because it was able to do sub-refresh updates on its panel.

C2 and all later models have standard BFI because LG Display removed the capability to do sub-refresh panel updates, probably to reduce costs.
Where do you find these information about c1?
Standard bfi mean insert a black frame ?
How about bfi of sony x900e?standard backlight strobe on off led backlight?

Does quest 2 vr standard backlight strobe?how does it achive 0.3ms clarity even better than crt? Compared to 120hz bfi of c1 only get 4ms clarity?

Can you share more about line buffer anf scan out type of c1?are they built in good shit in c1?

Can you provide source about sub refresh updated?
Are they top of bfi type?
Does rolling scan of c1 same as pvm2541's flicker free to use rolling scan to reduce 24p frame hold time blur from instant response time of oled?
https://www.youtube.com/watch?v=3ywOgW_Il9c

Here is a video showing it. Standard BFI is only capable of darkening the entire screen until the next frame overwrites it. Rolling scan with variable height of the dark area is only possible with sub-refresh panel updates.

I think as soon as the TV allows for more than 1 Motion Pro setting, it's a hint it is sub-refresh because standard BFI is restricted to the maximum panel refresh. If the panel refreshes at max 120 Hz and has no sub-refresh strobing or rolling scan, it is just possible to do 60 Hz strobing at 60 fps. This is why the C2, C3 and so on only have the Motion Pro setting On and Off, and no Low, Medium and High. For LCD I assume most do backlight strobing, and this is mostly independent on the max panel refresh because it is related to the state updates of the liquid crystals and not to the updates of the backlight, these are two different processes.

can i ask
how many fps of 60hz bfi of c1 can achieve?
soemone said 120hz bfi of c1 can be equal to 312fps non stobe display's motion clarity.
how about 60hz bfi ?
i tried 60hz bfi on c1 and noticed the motion clarity when you flip the analog stick to look around,the motion picture not crispy clear as same as 120hz bfi.

2.does c1 draw line from top to bottom one line by one line just like crt beam draw line ?
Does it called line buffer?
https://encrypted-tbn0.gstatic.com/imag ... 37cLMeLg&s
does per line of c1 hold for 8.3ms on 120hz disply?

3.do you think v sync s good thing or bad thing when it compared with fps limiter to lock 120fps on nvidia control panel?

4.i tried vrr on ps5 rendering 60-70fps and noticed the motion clarity crushing together look like trash

Posted: **17 Jan 2026, 09:21**

LG nerfed C1's BFI at 60hz compared to CX's. More brightness at the expense of motion clarity.

But it's so dark on CX that is barely usable, so it's a "pick your poison" choice.

If only TV manufacturers could integrate something similar to retrotink with advanced custom settings, but it's not gonna happen soon, if it not ever.

Posted: **19 Jan 2026, 02:02**

Baron of Sun wrote: ↑
09 Jan 2026, 07:27

derekchan wrote: ↑
09 Jan 2026, 04:33

Baron of Sun wrote: ↑
09 Jan 2026, 02:58

derekchan wrote: ↑
09 Jan 2026, 00:50
Is it rolling scan
Line buffer
C1 had rolling scan because it was able to do sub-refresh updates on its panel.

C2 and all later models have standard BFI because LG Display removed the capability to do sub-refresh panel updates, probably to reduce costs.
Where do you find these information about c1?
Standard bfi mean insert a black frame ?
How about bfi of sony x900e?standard backlight strobe on off led backlight?

Does quest 2 vr standard backlight strobe?how does it achive 0.3ms clarity even better than crt? Compared to 120hz bfi of c1 only get 4ms clarity?

Can you share more about line buffer anf scan out type of c1?are they built in good shit in c1?

Can you provide source about sub refresh updated?
Are they top of bfi type?
Does rolling scan of c1 same as pvm2541's flicker free to use rolling scan to reduce 24p frame hold time blur from instant response time of oled?
https://www.youtube.com/watch?v=3ywOgW_Il9c

Here is a video showing it. Standard BFI is only capable of darkening the entire screen until the next frame overwrites it. Rolling scan with variable height of the dark area is only possible with sub-refresh panel updates.

I think as soon as the TV allows for more than 1 Motion Pro setting, it's a hint it is sub-refresh because standard BFI is restricted to the maximum panel refresh. If the panel refreshes at max 120 Hz and has no sub-refresh strobing or rolling scan, it is just possible to do 60 Hz strobing at 60 fps. This is why the C2, C3 and so on only have the Motion Pro setting On and Off, and no Low, Medium and High. For LCD I assume most do backlight strobing, and this is mostly independent on the max panel refresh because it is related to the state updates of the liquid crystals and not to the updates of the backlight, these are two different processes.

can i ask
if play 30fps >60hz with bfi high achieve same motion clarity as 60fps >60hz bfi?

2.have you watch input lag video from microsoft ,it shows the noticeable difference between 1ms and 10ms input lag.
Does motion bfi high add 16ms input ? that's huge
i am wondering how many fps with non strobe display can acheive the same motion clarity as 60fps>60hz bfi?

Posted: **19 Jan 2026, 03:07**

Baron of Sun wrote: ↑
09 Jan 2026, 07:27

derekchan wrote: ↑
09 Jan 2026, 04:33

Baron of Sun wrote: ↑
09 Jan 2026, 02:58

derekchan wrote: ↑
09 Jan 2026, 00:50
Is it rolling scan
Line buffer
C1 had rolling scan because it was able to do sub-refresh updates on its panel.

C2 and all later models have standard BFI because LG Display removed the capability to do sub-refresh panel updates, probably to reduce costs.
Where do you find these information about c1?
Standard bfi mean insert a black frame ?
How about bfi of sony x900e?standard backlight strobe on off led backlight?

Does quest 2 vr standard backlight strobe?how does it achive 0.3ms clarity even better than crt? Compared to 120hz bfi of c1 only get 4ms clarity?

Can you share more about line buffer anf scan out type of c1?are they built in good shit in c1?

Can you provide source about sub refresh updated?
Are they top of bfi type?
Does rolling scan of c1 same as pvm2541's flicker free to use rolling scan to reduce 24p frame hold time blur from instant response time of oled?
https://www.youtube.com/watch?v=3ywOgW_Il9c

Here is a video showing it. Standard BFI is only capable of darkening the entire screen until the next frame overwrites it. Rolling scan with variable height of the dark area is only possible with sub-refresh panel updates.

I think as soon as the TV allows for more than 1 Motion Pro setting, it's a hint it is sub-refresh because standard BFI is restricted to the maximum panel refresh. If the panel refreshes at max 120 Hz and has no sub-refresh strobing or rolling scan, it is just possible to do 60 Hz strobing at 60 fps. This is why the C2, C3 and so on only have the Motion Pro setting On and Off, and no Low, Medium and High. For LCD I assume most do backlight strobing, and this is mostly independent on the max panel refresh because it is related to the state updates of the liquid crystals and not to the updates of the backlight, these are two different processes.

can i ask
how many input lag will add if play 60fps>60hz bfi high and 120fps>120hz bfi high?
the input lag of 1080p 60hz of c1 is 13ms then plus 16ms input lag of bfi ,that will be 29ms
rtings said <15ms input lag of 60hz refresh rate consider to be good, 10ms more input lag will be noticeble difference

Posted: **19 Jan 2026, 08:56**

30 fps at 60 Hz with Motion Pro High will not have the same motion clarity as 60 fps at 60 Hz because you'll get double images when BFI flickers twice as often as the input content.

In HDTVTest's review of the LG C1 Vincent measured:

120 Hz: 5 ms
120 Hz (Motion Pro enabled): 13 ms
60 Hz (Boost Mode enabled): 10 ms
60 Hz (Motion Pro enabled): 21 ms

Note that Vincent measures the time an input signal needs to become visible in the middle of the display. Other people measure top or bottom which gives different results.

So in the end you get between 8 and 11 ms extra input latency when engaging Motion Pro. You are the only person who can judge if that's too much for you. For me personally I always played with Motion Pro (Rocket League for example) and never had issues.

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