This isn't a debate about which is better. It's about what type of nuances they share.

For owners of both, or just the well-informed:

Do LCD Front Projectors have millisecond refresh rating? For example: My Samsung 4071F LCD Flat panel has an 8ms refresh rate. The higher the refresh, the slower the input time from a video game to the screen. I'm a gamer, and so I want the lowest possible input lag. I've been fine with my 8ms lcd, but CRT's have basically no ms refrsh, while plasmas are considered faster than 2ms.

Would LCD FP's have the same motion blur or judder issues that 60hz TV's have? Or are LCD's more like CRT's/Plasma that do incredibly well with motion?

Do LCD front projector's truly output 1080p/24, or they do do 3:2 pulldown? (I ask this because typical LCD flat panels are 60hz, and I don't know if they use the same technology for projectors.) :o

I'm very new to the FP world (hell, I don't yet own one, but I'm asking all this because I want one).

I know that most of you will probably say that lcd projectors do fine with motion, but if all you've owned are 60hz tv's or such in the past few years, you won't know good motion/good refreshing until you switch back to a CRT or get a plasma.

This is an interesting question, I'm wondering the same thing.

Refresh rates are not the main issue. It the video processing that causes the lag. High refresh rate will only cause ghosting not lag.

Most LCD FP's are also 60 Hz (refresh wise) and 24 fps film material is presented with 3-2 pulldown. Some are 72 Hz and some are 120 Hz and both of these refresh rates can do film without the 3-2 pulldown (they would use 3-3 and 5-5 pulldown respectively). Some 120 Hz projectors still have 3-2 (6-4) pulldown.

Actual film projection requires cutting off the light beam to the screen when the film is physically advanced to the next frame (pulled down). It was found that 48 short flashes, two per frame (you might say 2-2 pulldown) gave less visible flicker compared with 24 long flashes, one per frame. Meanwhile the LCD stays the same way until the content is changed, so it is not really necessary to "darken" the screen between refreshes. Except that there is a delay of a few milliseconds before LCD pixels change and motion blur is more noticeable as a result.

The original purpose of 120 Hz refresh for LCD was to allow for darkening of pixels in advance on light to dark transitions while doing nothing special for dark to light transitions. This gave the best reduction of motion blur.

For owners of both, or just the well-informed:


Would LCD FP's have the same motion blur or judder issues that 60hz TV's have? Or are LCD's more like CRT's/Plasma that do incredibly well with motion?

.

Without getting technical and all that, my eyes vote the PJ exhibits 'less' motion artifacting. So much still depends on the particular display and the signal it receives, however.
When watching LCD FP the SDE (gridlines) become more pronounced in a peek-a-boo fashion rather than the 'smearing' effect more evident on LCD flat panels.
All this pales in experience with the compression artifacts common to most broadcasts.

If I get the same juddery mess on an LCD FP as I do on a 60hz LCD, this saddens me. I'd prefer an LCD FP due to it's extreme flexibility in placement, but I really don't want a juddery mess. 3:2 pulldown? No thanks. I'd prefer true 1080p/24.

If I get the same juddery mess on an LCD FP as I do on a 60hz LCD, this saddens me. I'd prefer an LCD FP due to it's extreme flexibility in placement, but I really don't want a juddery mess. 3:2 pulldown? No thanks. I'd prefer true 1080p/24.

Most 2499$+ projector support 24hz. For example, TW1000 (1080UB) support it @ 96hz. The new batch that are coming soon (Cedia is next Week) will probably support it too

I remember reading somewhere that LCD refresh rate is about 11-15ms and SXRD is 2.5ms and DLP is measured in microseconds. I did indeed notice that VW60 looks "cleaner" than my previous LCD projector Mits HC5000.