Originally Posted by Kris Deering
So I received the RS620 yesterday. This allowed me to do some direct on screen comparisons. I brightness matched the projectors and ran them both without any dynamic laser/iris but then later turned on the dynamic laser for the RS4500. Starting with Blu-ray I was surprised at how little difference there was. With paused images they were nearly identical in detail (I did this both with eShift On and Off). The RS620 has quite a bit more intrascene contrast, which was readily apparent in darker images (some clips from Oblivion and Pacific Rim). But the RS4500 had a bit more dimensionality in motion. But overall 1080p playback was a lot closer than I was expecting and I think I'd actually lean a bit toward the 620 for the improved contrast with darker material.
With 4K there was more separation. While the 620 and eShift do an admirable job with native 4K content, the RS4500 definitely takes it to another level. Fine object detail shines and the image has an ease to it that just isn't matched with the 620. The 620 also looked pretty flat in direct comparisons with the better UHD transfers out there like Lucy and Sicario. But if you didn't compare them directly and watched the 620 on its own it was surprising how good it looked. 4K transfers definitely looked better than their Blu-ray counterparts in fine detail. All of the UHD viewing was done in non-HDR (I turned HDR off in the Panasonic UHD player) to make it easier to compare until I get an HDR calibration done on the 620.
I don't think many people would be surprised by this comparison.
I have been saying since last April when I got my 5000ES, that my RS600 did a remarkably good job with true 4K content. To the point the the difference would be hard to spot unless in a side by side comparison on a very large screen.
I never expected the RS4500 contrast to look as good as my RS600, and it doesn't. The RS4500 throws an incredible image, and there are some advantages to the unit over the RS600, but contrast isn't one of them. Not sure who would of expected it to be though.
The 5000ES, the RS4500, and the RS600, all have their right places, but they are really all for very different installs.
The advantages of the RS600. Best bang for the buck. It has an incredible picture, especially when displaying true 4K content with Eshift. The unit is almost silent. The native contrast is unbeatable. Only cons, it could still use more light output and the lamp doesn't provide the same super stable image that Laser does. There can be some noticeable flicker with the lamp, especially when first warming up and the unit has uniformity issues when displaying black with increased brightness in the corners. I would limit to about 10' wide screen.
The advantage of the RS4500. True 4K projector. Excellent lens and sharpness. Decent motion handling, but I think that Sony still wins slightly in this category. More light output than the RS600. The Laser provides better image stability and uniformity. The manual iris allows for increase of native contrast. Compared to the Sony, not a bad entry price for a true 4K Laser projector. Only cons, unit can be loud especially in High Laser mode. The dynamic dimming still needs work, as its fairly distracting at this point. And the native contrast is good, not great. I would limit to about a 12' wide screen.
The advantages of the 5000ES. True 4K Laser projector. Brightest unit in the home theater market. Excellent lens and sharpness. Best motion handling and the dynamic Laser dimming works extremely well. 1000-1500 lumens brighter than RS4500, so it can handle much larger screens or offer brighter HDR. The Sony is almost silent when set to 50% power, which gives same light output as JVC in High Laser mode. Slightly better native contrast than RS4500 with iris max open. Sony HDR Contrast slider allows for easy adjustment of HDR brightness / clipping. Can be used with even the biggest of screen sizes, especially in the 14'-16' wide range. Only cons, the Sony uniformity isn't as good as the RS4500. Good contrast, but like RS4500, no where near the native contrast of RS600. Most expensive unit of them all.