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Topic: Optoma1080HDR vs ViewSonic X10-4K
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Joined: Mar 28, 2005
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So, it would be of some benefit to you to spend some time really playing with, and asking questions if you have them, the Projector Calculator on the Projector Central website.

For the TK700STi (for example)...
https://www.projectorcentral.com/BenQ-TK700STi-projection-calculator-pro.htm

To get a 120" diagonal, you must have the projector LENS 6" (15.25cm) below the bottom of the screen and it must be between 7'10" and 9'5" from the screen. That's 2.38m at the closest point, so it may work.

Going ultra short throw really requires a fixed frame screen, and a $3,000 projector, so things get a bit tough on price on this for some people, but they look nice. The Fengmi T1 is well regarded and can sit a foot or so from a 120" diagonal, but projector placement must be EXACT in regards to the screen for things to work.

Finally, you talked about as shelf placement projector as an option.

Projectors are mostly designed to project 'upwards'. That is, the center of the lens is typically at or below the bottom edge of the image when sitting on a table. Flip it upside down and mount it from the ceiling, and the image typically projects downwards, so the TOP of the image is even with, or slightly below the center of the lens. This works out well for MOST installations (but not all).

When shelf mounting, typically the projector is upright and it is typically a foot or two above the heads of seated viewers.

To get the lens to work with an 'unknown height' in relation to the screen, you need a projector with a feature called lens shift. One with a LOT of lens shift is what is recommended as this gives you the most placement flexibility. One of the least expensive models that can do this is the Epson 3200 or 3800 models (EH-TW7000/EH-TW7100 in Europe).

This will allow you to place the projector upright and level on a shelf anywhere from the bottom of the screen to the top of the screen or ANYWHERE between and get a perfectly square on screen image.

Throw distance to 120" diagonal: 3.52-5.73m
https://www.projectorcentral.com/Epson-Home_Cinema_3200-projection-calculator-pro.htm#calc
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
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Joined: Jun 12, 2022
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Thank you for such detailed responses, I've learned a lot!
I'd rather avoid ultra short-throw for the sake of not ruining the placement.

Now it all come down to these 3 options: TK700STi, Epson EH-TW7000, Optoma Gt1080 (if still worth considering) - I can get them all here (TW7100 is unavailable). So, let's presume, both shelf standard throw and table-top short-throw are available, all 3 are of more or less the same production quality and reliability. I wonder, which one is the best pick in terms of the picture quality only? My guess woul be EH-TW7000? And which one gives more options (cinema, gaming)? Here I'd guess both TK700STi and Optoma are winning.

Practically speaking I'm inclined to pick a short-throw because I'm only renting and so I'll have to move it with me eventually and while all of them are probably not very portable, at least short-throw is more universal type for different possible layouts.

By the way, I've read a review that states TK700Sti isn't really well-done for floor mounting, only the ceiling mounting or you get to loose a lot in picture size.
[Edited by Dmit865 on Jun 15, 2022 at 4:53 PM]
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If the BenQ fits your location, it is probably the best choice overall for image quality. DLP is really sharp and while I like the Epson's brightness, it has some known lens sharpness issues that some are complaining about. It is, by FAR, the most versatile projector for typical installations, but not what I would consider the absolute best. It is the brightest by a good bit.

The BenQ I would take in a second over Optoma. Though they both may look kind of similar overall, the BenQ is likely better out of the box in terms of calibration. As well BenQ has much higher reliability at this time.

There is NO loss in anything going from ceiling mounting to shelf mounting. Many people get a two tier coffee table and put the projector on the lower tier (near the floor) and then in a room with standard 8 foot tall ceilings, they can achieve up to about a 160" diagonal without it being on the ceiling.

Please keep in mind, audio will need to be addressed separately.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
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TK700STi it is! You are the saviour, thank you for taking the time.
Audio is very separate subject on my mind. I was even thinking to ask you for an advice for an affordable 5.1 setup under $1500, but maybe it's too much to ask!
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