Originally Posted by blee0120
If you need lumen output to be higher than 700 lumens, you are going to get close to the same contrast numbers on all JVCs. The get those numbers on the higher models, you need to close the iris down. For instance, if you was running a rs49 with the iris open, you should get close to 25000:1, and on the RS57, you should get 30,000:1, then on the RS67 about 35,000:1. Those are not very noticeable for the amount of money. But if you close them half way, its a difference but you get maybe 500 lumens at max. If you close the iris, you get about 250 lumens
I made some calculations based on my screen (Black Diamond 110" 21:9):
With 900 calibrated lumens I should get 60 cd/mq white so, yes, I will need Iris fully open or ... use the new dynamic iris function but i wonder if it really does make sense to use dynamic iris on a jvc : when a particular scene will make the iris fully close down blacks will probabibly became better then an Oled but whites should be like 7-8 cd/mq (in my case) like a grey 35 ire ... -__-
So I think I'd go for fixed iris fully open and so, as you say, an RS49 would be a wise choise.
Maybe rs57 is better in some other department then rs49 ? lens quality is the same ?
Another question : I have a RGB-LED vpr and never had a JVC : how muh cd/mq loss should I expect as lamp ages to the end ? half ? or even less ?Edited by Qualunquemente - 12/19/13 at 7:18am