Blur Busters Forums

Is it possible to do QFT on a projector? I couldn't find much but what are the methods to get the best possible blur reduction on one.

QFT might improve a strobed LCD/LCoS (with a 3D frame sequential feature).

QFT has no picture effect on DLP

QFT might reduce low-Hz DLP lag (e.g. Optoma 240Hz probably accepts QFT of 60Hz and 120Hz with slight lag reduction) but will have no effect on DLP picture quality

Chief Blur Buster wrote: ↑

29 Jun 2022, 21:35

QFT might improve a strobed LCD/LCoS (with a 3D frame sequential feature).

QFT has no picture effect on DLP

QFT might reduce low-Hz DLP lag (e.g. Optoma 240Hz probably accepts QFT of 60Hz and 120Hz with slight lag reduction) but will have no effect on DLP picture quality

Hmm so what is the best way to reduce motion blur on a DLP projector? I've heard of enabling 3D mode and once on running multiple projectors in series but can no longer find information on this.

middleton911 wrote: ↑

30 Jun 2022, 18:54

Hmm so what is the best way to reduce motion blur on a DLP projector? I've heard of enabling 3D mode and once on running multiple projectors in series but can no longer find information on this.

You only need to run one DLP projector and enable its 3D mode.

Or simply use 240fps 240Hz. You can eliminate motion blur strobelessly simply by using more frame rate and more Hz. Get one of the 240Hz gaming DLP projectors for the best experience.

Be warned strobing DLP will reduce color depth, as DLP is a temporal dithering technology so halving persistence halves color depth. Quarter persistence on a 24-bit DLP can mean 6-bit color, so you can't reduce persistence too much or you get terrible colors.

The best approach to DLP blur reduction is more frames at more Hz. Then the DLP projector can spread it temporal dithered color over multiple refresh cycles (can result in minor plasma-contouring-style artifacts during fast panning, but it's the nature of non-motion-compensated temporal color dithering algorithms..)

Where did you hear about the use of multiple projectors? Refresh rate combining multiple projectors (e.g. four 120Hz off-phase strobed LCD/LCoS projectors stacked into one screen to produce a 480Hz sample and hold image) is still a very experimental "Area 51" premise. It is not something that consumers can do at this time yet, as it requires a strobing device as well custom windows indirect display driver software.