Originally Posted by Mike Johnson 3
I thought XD measures just under 1.0 gain (maybe around 9.5ish) and the UF comes in closer to 8.
I personally would only do a massive screen like you guys with a high lumen laser, then use high power without losing brightness so soon and having to deal with that nonsense. Or stockpile some bulbs
Are you running your NX7 on low or high?
Yeah, the XD is just under 1.0, I was just throwing out numbers off the top of my head. But even so, plugging it into a screen calculator an NX7 would max out around 7-8 foot lamberts on a 205" wide screen without a lens, and that is with a fresh bulb on high lamp. After a couple hundred hours it would be around 5fL. With a lens it could maybe reach 10fL, but again, even with the best tone mapping that is awfully dim.
Even an RS4500 wouldn't get over 15fL under the best case scenario on that size of screen, and although it would be tolerable with good tone mapping, that is a lot of money to spend to get an image that looks a bit dull and lifeless.
I run my projector on high lamp for HDR, low for SDR. With the lens I get around 20-23 fL, and with tone mapping it is quite an amazing picture. But I have to put up with the issues that screen gain and microperfs bring, and I am not too happy with that part. Panning shots on bright scenes highlight the hotspot and show off any inconsistencies in the vinyl. I just received my third replacement screen that will hopefully help with these issues, but based on what other forum members with 1.3 gain microperf screens have said, it is just an inherent issue with this type of screen. Unfortunately my options are limited, I could go to an XD screen and lose ~20% of my light and maybe still see the weave in the fabric, or I could go to a dreamscreen and lose 35% of my light and not see any weave or artifacts for sure, but then I am in that same 15fL boat with far less punch in my colors and highlights...
I agree with you, at the very least, if I were running a larger screen than I have now, I would opt for the laser DLP before a JVC, just because of the added lumens. With a Lumagen or an Envy and an anamorphic lens, the only drawback would be contrast, but contrast is always an issue on higher lumen projectors unless you spend 6 figures on a Christie... That is the compromise - big size means either spending 6 figures or putting up with 1000:1 contrast.