Video/image Projectors these days ? - Page 1
Forum section: electronics / general

author: MathWizard
author_rank: Super Contributor
timestamp: February 26, 2021, 02:36:56 pm
content: I was just thinking about how bare my walls in my room are, and I watch lots of slide presentations on projectors. I'm wondering how good are they these days, something that I could plug into my PC, and project a nice wallpaper, or even on video, onto the white painted wall.I guess they can get pretty expensive. If a 1440p wallpaper looks great on my 27" LCD screen, what would I need to make that look good on a wall at a larger size?Can I get a projector that would project a 8ft*4.5ft 1080p image/wallpaper onto the wall ?Are we there yet

author: AndyC_772
author_rank: Super Contributor
timestamp: February 26, 2021, 02:42:35 pm
content: Yes. I have a 120 inch screen in my lounge, which I use for movies.My old projector was about £250 off Ebay and is 1080p; I used that for about 18 months and was very happy with it.A couple of months ago I upgraded to true 4K, and the picture now compares very favourably to my local cinema.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: February 26, 2021, 02:57:36 pm
content: Projected wallpaper sounds cool but don't forget the fan noise

author: MathWizard
author_rank: Super Contributor
timestamp: February 26, 2021, 03:10:12 pm
content: I hardly ever watch "TV", and no way am I getting a giant screen, but a projector could be nice, so I'll have remember to save some money and find 1 in a sotre display somewhere.

author: ajb
author_rank: Super Contributor
timestamp: February 26, 2021, 09:51:47 pm
content: Size of the projection is really just about distance. You can get any size you want by putting the projector far enough away, but eventually brightness becomes an issue even in otherwise favorable conditions due to the inverse square law. Short throw projectors are increasingly available if you can't physically get the projector far enough away for your desired size. Projector specs should include recommended throw range and what sizes you can achieve in that range.The success of the effect will very much depend on how much ambient light there is in the environment, daylight is going to be real hard to compete with, and even moderate lighting may need to be adjusted to avoid hitting the projection surface. This is the biggest disadvantage to projection versus other display technologies: you need a nice reflective surface to project on, but this surface is going to be equally effective at reflecting other sources of visible light, so the only solution is to control the environment around the screen (or rear project, but that tends to be hard to arrange in a home).Be aware that if you choose a lamp-based projector, these tend to have a live of a few thousand hours before needing the lamp replaced. That's a long time when used for a few hours of presentations a week, but if it's just sitting there on for many hours a day you're going to burn through that a lot more quickly. Cheap office-grade projectors may also have other objections to being on for that long at a stretch. I'm not sure what the current state of consumer LED/laser source projectors is these days, but if you can find one that's bright enough for your purposes that might be a better bet.

author: Bicurico
author_rank: Super Contributor
timestamp: February 26, 2021, 10:33:17 pm
content: You will probably get a 65" TV cheaper than any FullHD projetor.Apart from picture size it willbe better in all aspects: image, brightness, colors, cables management, picture geometry, operating noise, ...I wouldn't buy a projector today.Regards,Vitor