I've had a good few hours, one on one, with the 750 and will get some more time and more tests run tomorrow.
I just want to say upfront that I think this is a good projector and, considering the price, its a very good projector for the money. In the gammut of projector prices the 750 very clearly is well inside the bottom 5%. Its performance most definitely isn't. I think it certainly provides more bang than your buck has a right to demand, and that's not common.
There are some great points, some good points, some weak points and some bad points. Looking at it holistically its an evolution from the RS2 rather than a revolution.Posts I've read from people whose opinion and knowledge i trust indicate the same. If I post my opinion of a PJ I try to consider the cost as well as the application and target audience. There is no point, in my opinion, judging every machine against the very best as this simply would lead to far too many negative opinions and reviews. My answer as to how good a machine performs will differ (obviously the numbers dont) if the person asking the question wants it compared to similar priced units or if someone was asking to compare it to the best available. I think that's fair.
This has taken a bit longer to post as I have been waiting for feedback from people who I asked to proof read it to make sure I wasn't being unfair. I had no complaints.
Here is a brief outline of my initial impressions. I'll update later if need be
1.Its nice looking unit. Not important to me, but if it doesnt need to be butt ugly, it shouldn't have to be.
2.Contrast...Obviously very high, with blacks looking good in an ideal room. I left the masking OPEN to show the blacks in their worst condition regarding perception and they were still great.Masking closed was sweet. I have more testing to do and will get CR and lumens numbers soon.
3. OOTB Color...Not great OOTB. Quite overblown This is well worth considering as many people simply operate OOTB color. The THX preset, as has been mentioned a number of times before, has a greenish/yellow tone to it. I personally couldn't use it as its pretty obvious. Thats more an observation than a criticism, as its a preset and need not be used. Some peoples expectations of it were understandably high. I had hoped for a reasonably good fall back in lieu of a full calibration.
4. CMS....This was one of the things I was most looking forward to. Sadly, its not the home run I hoped it would be. It wasn't possible to get a color perfect result, which disappointed me. It was a good deal better than OOTB. Much has been said regarding difficulty using the CMS. I didn't find it that bad as I had read Ekki's advice. The fact that its laid out the way it is, with a non standard implementation and the juggling act that's needed, make it a bit of a mess. It seems like either an afterthought or possibly the best that can be achieved with the current architecture. It just doesn't feel properly integrated compared with a normally functioning CMS. Perhaps JVC could look at the architecture on future units, even if it means the internal control needs to appear as an external unit to the rest of the PJ, as external color control seems straightforward.
5.ANSI CR....At 230, it was fairly typical of LCOS units. Having tested the JVC 4k unit and the derivative Meridian 810, they both advertise an ANSI of 300 and delivered 190 and 210 respectively. This has a major effect on the pop and 3 dimensionality of an image. Low ANSI results in a flatter overall image and the RS20 image is typical of a 200 ANSI machine.
6.Sharpness. The lens is apparently an improvement and sharpness may,or may not, be improved over previous units.I didn't have an older RS unit to compare directly. Objectively it looks pretty much the same. The lens performance would seem to be far better than the technology can deliver. If the RS2 was sharp enough for you, there hasn't been any retrograde steps. If you found the image too soft, you will probably still have an issue.
7.Uniformity...A good improvement, but still not the greatest out there. The corners are no longer beaming out, but the issue has not disappeared When I measured CR I took a number of readings and gave the number based on the best black level. If the CR was measured using the worst area of the screen, it would obviously be lower.
8. Corner to Corner focus...I wish more people would report this. I focus one corner pixel and the check the others, especially the one diametrically opposite. I could focus 3 corners fairly well, but not all 4. Thats not at all unusual at this price.
9. Motion blur...Looks the same as before. If it didn't bother you, no problems. If it did, it still will.
10. Halo effect....Looks the same. A bright object on a dark background has have a haze around it and will washout some of the black. This may be somewhat related to the ANSI performance, but it varies in intensity so its obviously not that simple.
11.Image noise....Its still noticeable as with the RS1. This also effects the 4k units so its not just an RS issue.
12.MC....a shade shy of 1 pixel at the edge, around 1/2 pixel across most of the range, perfect at center. I found the correction option to be useful so long as major corrections are not needed.
13.CA....Some CA is apparent on test patterns, but that's normal at this price point (and quite a bit higher too).Its better than previous RS models Its not an issue with normal viewing. Nice
14.RBE...This unit is 100% RBE free. Just thought Id throw that in there to see if anyone was actually still reading this far.
15.Source Compatibility/Handshaking...No issues i could see using....Sat,cable, BD, HDDVD, DVD,PS3,360.Camcorder.....all at the various resolutions and rates. Havent tried HTPC yet, but some are reporting issues. Hopefully they can be addressed by JVC quickly if that is, in fact, the case.
16. Anamorphic compatibility.....This is a simple On/Off preset that works exactly as would be expected with no issues. This is where Id like to make a suggestion that would be a great boon, to this and many other PJs....JVC should implement a full AR control option to allow for other aspect ratios that are in common use like 185 and 240. The fact that an Overscan and Mask option are provided shows that the machine can be controlled in both axes, so why not give us full control. The onboard scaling is certainly up to the job. This option allows for amazing flexibility, and covers all three modes in a single option. My 360 displays some white artifacts on the top 2 pixels, I don't want to have to dump 25 or 50 pixels to remove it. These machines, and their users, are reaching a level of sophistication that this sort of control is more than justified.
17. Scaling...I didn't go overboard here as it been my experience that all good current machines scale well, some better than others. This PJ scales very well.
18. Brightness...As is well reported the unit is brighter than previous units. Some numbers below. I was on the shorter end of the throw, but not minimum. Your lumens could therefore be higher or lower. I will provide a set of numbers for the range. Zoom position has a major effect on brightness as it does with all machines that don't use a pro level constant aperture zoom. It doesn't seem to be a bad performer in that aspect. No worries there.
I will also map the effect of lens shift on the output and the PQ when I get time.
Overall this is easily one of the better machines available for under $10k and possibly stretching well into the teens. Is this a major upgrade to an RS1? yes, but not stratospheric. The jump from the RS2 is not major, but it may be worth it to some.
I would most certainly recommend that this PJ be on anyone's shortlist who is looking to spend this sort of money.
Hope this helps and is of interest.