Originally Posted by Seegs108
It's not really a fair comparison when you factor in the price difference. If you compare the X9000 to the 520ES, which is closer in price but the JVC still being cheaper, it's 43000:1 and 320:1 ANSI vs 13500:1 and 410:1 ANSI. By most accounts the JVC looks better with HDR due to the slightly brightness, better on/off contrast, bigger color gamut and an impressive eshift implementation paired with better lens quality over the Sony.
If you check out this site and plug the numbers in (I tend to plug in a gamma of 2.2) you'll see all but the brightest images (aka the Nurse scene) will look better in terms of intra-scene contrast on the JVC.
I knew this website already and like it very much.
However, you should be carefull how you interpret the results.
The number given for each picture after gamma correction "Projector A Luminance"-->"Average", for example for the "Nurse picture" 24,6% with a gamma of 2,2 is also called "ADL" for "Average Display Luminance".
So proposed on the calculator are following pictures (with a gamma of 2,2):
- Gladiator: 3,37% ADL
- Saruman: 2,53% ADL
- Starfield: 0,19% ADL
- Nurse: 24,6% ADL
You can read the well documented thread on ADL/brightness study of movies here on avsforum:
The results for a study over 53 movies has shown:
90% of all movie pictures have a brightness below 20% (ADL=% of white)
80% of all movie pictures have a brightness below 13%
50% of all movie pictures have a brightness below 5%
The average brightness/ADL of all analyzed movies is 8%
It means that more than half the pictures of all movies are brighter than the pictures: Gladiator (3,37% ADL), Saruman (2,53% ADL), Starfield (0,19% ADL)
I have plotted the contrast curve behind the "online calculator" of the SONY VW520ES, JVC DLA-X5000 and JVC DLA-X9000 using the average On-OFF and ANSI contrast numbers provided by Cine4home.
I have then compared it to the repartition of picture having a certain ADL.
Here is the results in image:
Sony VPL-VW520ES vs JVC DLA-X5000:
Only for 10% of all movies pictures (the darkest) below 0,8% ADL brightness, does the JVC DLA-X5000 have a better contrast. For the other brighter 90%, the Sony VPL-VW520ES has a better contrast.
Sony VPL-VW520ES vs JVC DLA-X9000:
Only for 38% of all movies pictures (the darkest) below 3,4% ADL brightness, does the JVC DLA-X9000 have a better contrast. For the other brighter 62%, the Sony VPL-VW520ES has a better contrast.
ps: I also attached the excel sheet in the zip file so that everyone can play with it and other projectors. :-)