Many people are replacing their older projectors with new 4K HDR products from the likes of JVC, Sony and Epson. The odd thing is that most of these new projectors are not really that different in performance than the older units some people already own or that you can acquire in the used market.
HDR needs dramatic brightness to achieve the light levels necessary for this. At this time only flat panels can do this properly. A few of the newer projectors are brighter than previous models, but not be enough to reach 1000 nits. Most installations in reality with these new projectors struggle to hit 100 nits.
The UHD standard also brings with it bolder colors. Many older projectors can achieve bolder color spaces than Rec.709 with the proper settings.
Only a few products on the market are really sharp enough to do 4K any justice. These would include the JVC RS4500, Sony VPL-VW5000ES, BenQ 4K, Sim2 4K and Optoma 4K projectors.
I have had great success with creating custom user settings in some projectors to enable them to work with UHD players to achieve much of the color benefits available from this format along with some of the extended dynamic range. This has resulted in images that are very close to products being sold as 4K HDR products today. Depending on the projector you own the picture may be better than some of 4K HDR projectors on the market.
The ability to play UHD discs also allows people with Atmos surround systems to take advantage of the Dolby Atmos audio format. This format is frequently only available today on 4K UHD Blu-Ray discs. Many people feel they have been tricked into upgrading for Atmos and then must upgrade to 4K to have the format available. This is a way to avoid that expense.
The key to being able to do this is having a projector that has the ability to customize the gamma curve along with a significant level of control of the color space. It also needs to be reasonably bright as installed. Products from Epson, JVC and Sim2 are good candidates for this tweak. You will need a 4K HDR UHD player of course to take advantage of this. At this point all of the installations I have worked with have used Sony UHD players. Please contact me at www.accucalav.com if you are interested in this service.