Originally Posted by Frank714
The one thing that's puzzling me is this:
Ever since the Full HD DarkChip3 (or DarkChip4) contrast performance in DLP projectors has decreased.
But the 0.47" DMD used nowadays for 4K XPR resolutions is just 'another' Full HD (1.920 x 1,080) DMD.
If a front projector manufacturer were interested in better contrast performance, couldn't they just use the 0.65" DarkChip3 DMD instead or is the 0.47" DMD part of a Texas Instruments XPR light engine that won't allow modifications?
TI only allows manufacturers to use packages they personally approve. A manuf is not permitted to come up a custom DMD combo without TI approval.
The current 4k choices TI offers:
* 1.38" XPR 8k (4-way) / Native 4k (only DPI 4 now)
* 1.38" Native 4k
* 0.98" Native 4k (only barco 4 now)
* 0.95" XPR 4k (2-way) (only barco)
* 0.66" XPR 4k (2-way)
* 0.47" XPR 4k (4-way) / Native 1080p
My guess for why it was segmented this way-
While a 0.66 1080p xpr would have better contrast (note: not tons better) than the current 0.66 1528p xpr, it would also have much lower resolution. Since the resolution would be much lower, it may just be smarter at that price point to optimize around a plain 1080p display path, since 4k requires a higher quality lens more expensive processing, etc. Most people buying a projector at the 66xpr price point want a true 4k resolution experience and the 47xpr doesn't quite deliver that; while 66xpr isn't native 4k, it's very close in performance to and sometimes better than 3chip native 4k solutions with real world content.
All manufacturers under 20k have only used xpr66/47 due to cost and marketing reasons, though I can see the native 4k .98 being an option they could justify a higher price to the consumer for and I would not be surprised to see a model under 20k with the .98 native 4k DMD in a couple years.
In 2yr or so I expect following price brackets:
* 10k-25k+ - 0.98" Native 4k
* 3k-10k - 0.66" XPR 4k (2-way)
* 1k-3k - 0.47" XPR 4k (4-way)
A lot of people reminiscing about contrast on old DLP projectors need to remember how dim they were. It's easier to achieve better contrast on DLP with less brightness. Due to the importance of brightness for HDR, a dim projector isn't a viable option anymore. In fact, projectors these days need to be what was referred to as a "light cannon" back in the day to be truly effective with HDR. 1500-2000 calibrated lumens in p3 color is a good place to be around for a medium sized screen, and older high contrast projectors in this price bracket were often under 750 lumens calibrated which is no longer acceptable