Originally Posted by thorr
Quick question: I already own a Lumagen HDP. Is there much benefit to getting an RS25 over an RS15 if I were to use my Lumagen for color correction on the RS15? I know the Lumagen served me well with my CRT for color correction but it did so by monkeying with the HDMI color values before they reached the projector. Does anyone know how the CMS works on the RS25? Does it work in the same way, or does it control the color of the internals of the projector after the HDMI part of the signal so you don't lose some of your color range by boosting R, G, B values etc.? Is the CMS more powerful than the Lumagen for color correction? How so?
A couple of things here. First, the HDP is a very nice device but it is getting a little bit long in the tooth. You know all the reasons why that is so, so I won't go into them. Second, I used the HDQ for a time to do gamut correction on an RS1. It does a very nice job but it will never measure perfectly. Plus, the CMS only works well at certain stimulus levels. If you measure the lower stimulus levels, they will hardly be corrected. Granted, it is more difficult to spot oversaturation at those levels, but you know that it is there. If you can live with that, save a few bucks and get the RS15 and also have a little less contrast so maybe your blacks will be a little more elevated. If it were me, I would spring for the RS25. The CMS is killer and you can get all your colors within just a few dE. If there is any sacrifice associated with the use of the CMS in the RSs, it has never been mentioned here. Your calibration will be as good as your skill level and effort that you put into it.