Optoma EX525ST – A worthy short throw projector?

Product Brochure  image image Main standout feature is ultra “short throw”… drives a 40” display at only 1.5 ft away from the wall!  (2.5 ft =  60” display, 4 ft = 100”).
I’m interested in something that will support projecting to the ceiling from a bedside table in addition to the usual setups.
Wondering if the short throw would provide for easier location swapping… less mounting required…set it on top of something close to desired wall and go.
Was hoping to drive it from my mini tablet pc for more varied locations but am worried that it’s VGA only output isn’t going to be very satisfying image quality… I do have DVI-I output available from primary desktop PC in living room area which should be top notch. Reviews:


  • $1020 including APO shipping from “ProVantage” a reputable dealer (right at the top end of my desired budget)
  • 1024 x 768 native resolution (1600 x 1200 max input so supports 720p and 1080i HDTV inputs with down scaling… 720p is technically 1280 x 720 so it doesn’t quite nail that resolution natively but there are many LCD/Plasma TV’s which get away with calling this 720p so it must be fairly “ok”)
  • all the common video input types…s-video, composite, PC VGA and even digital (DVI-I which is adaptable to HDMI)
  • great brightness/contrast specs  = 2500 / 2500
  • good lamp life = 3000 hrs
  • low noise = 30 dB’s
  • ceiling mountable (mount holes and flip image mode)
  • looks to be a decent remote control
  • 3 year warranty on parts/labor, 1 yr on the lamp (both very typical)… looks like lamps are about $300-$350 which is a little high but common
  • – definitely a business class projector – there’s a well known “rainbow effect” with the ‘slower’ DLP hardware typically used in business class projectors vs true “home theater” projectors… it can bother certain people while running moving images… I don’t know whether we would notice this or not.
  • – does NOT come with a case

Anything important that I’m missing??
All the short throws I’ve found are definitely business class and not true home theater.
The more I take measurements around the apartment I see that there is plenty of throw distance as long as I can setup decent ceiling mounts so starting to think I’m shoehorning for not the best reason.

3 Replies to “Optoma EX525ST – A worthy short throw projector?”

  1. It’s a short range, probably not much more than 6 feet reliably. Designed to sit close to projection surface, thereby allowing people to walk very close to the screen (for presentations)… it’s definitely a business oriented projector, not home theater. That means it won’t have top specs with regards to video/games… this is the main difference between the two primary model lines out there today.

  2. Update: page 17 of the user manual confirms that the unit is capable of focusing up to a 12.1 ft throw. Now that would result in a 303 in (25ft) display image which is getting a little rediculous to physically look at in normal home theater surrounds; but it would be awesome to throw up on the outside of a house for summer movie night or something like that 🙂

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