Originally Posted by oztheatre
You are the one claiming it has 'sophisticated glass optics'.. it doesn't. For the price it's an ok projector, but that's it, it can be stretched any further to best more expensive machines. Now if this machine had the excellent
and sophisticated optics
you're touting, there'd be no need to buy a more expensive projector. Using the words sophisticated and excellent on a $1500 projector is misleading imho. As is their marketing material. And that's proven to be the case in all the complaints and purple glowing imagery that this machine exhibits. No I wouldn't get one, for $1500 you can't get a good 4K projector, period. You can however get a projector that exhibits horrendous chromatic aberrations due to the cheap optics. And if you sit back far enough, you might not see it, win win. Not my cup of tea though. You could also just buy a big 4K (real 4K) TV and sit closer too.
It's just the marketing and how they're talked up.. I mean how does one then rate the optics on a 40 grand sony? Better than excellent? turbo charged excellent +2? The BS marketing leaves no wiggle room as they're already so perfect.. when that's completely untrue
CA and sharpness are interdependent but they are not exclusively connected. Sharpness comes from several different attributes, including focus uniformity and convergence and CA and other things. CA does not necessarily degrade a colorful image, it depends on the CA type. As a rough example, if you had a red error and you see an image with mostly dark red and a darker gray, you will see no error. That is just for convergence error. With CA, it becomes much much more complicated as the CA changes based on the size of the pixel clusters. The reason it changes is because the CA is actually the light interfering and mixing inside the lens, and if you get a big enough cluster of pixels, it can fall off to nothing, as in NO visible CA even when the projector has CA.
I'll take your word for it that the Epson was sharper (but you were also comparing the Epson 6050, not the 5050, and the 6050 now touts a 'hand picked' lens supposedly).
However, IME, the SDE of LCD is degrading to the image, if it weren't a lot more of us would own Epsons instead of a JVC or Sony.
Remember, the Epson is a Native 1080p LCD panel with a 1080p grid, yes it has e-shift which helps reduce the issue but it's still got a wider gap than LCOS or DLP (especially 4k DLP).
There is even an improvement between a 1080p JVC and a Native 4k JVC with the pixel grid, so to say it's not an issue with the Epson (as in has zero affect to the image) is misleading at best. The Epson certainly will easily hands down beat this Benq projector up in black levels, but IMO, it's likely a trade-off. Black levels vs. SDE.
For those claiming that SDE is not an issue, well to some of us it is absolutely is as I've had Epsons in my room before. With the Epson e-shift engaged, it's mostly a Non-issue at that point, but then there are limitations to that as well, and the Epson e-shift is said to be the weakest looking of all the 3 types (DLP E-Shift > LCOS E-Shift > Epson - LCD E-Shift).