Optoma EP7155 review
Small, light, with some impressive features and fair running costs, but image quality isn't quite up there with the best.
Review Date: 11 Feb 2008
Reviewed By: Jonathan Bray
Price when reviewed: (£562 inc VAT)
If you want a jack-of-all-trades projector - one you can carry around and use for presentations back at base, too - this Optoma fits the bill better than any of the other products we've looked at this month. It's the lightest and most compact by quite a distance at 1.4kg.
You might assume these compact dimensions mean less in the way of features, but the diminutive EP7155 packs plenty in. As well as 2,500 lumens brightness and a contrast ratio of 2,500:1, it's the only projector here to sport an HDMI input.
Those impressive contrast and brightness specifications mean it's fantastic at displaying dark greys and colours against black backgrounds while maintaining intense whites, but sadly image quality elsewhere just doesn't stack up. Clearly, the optics aren't quite up to the level of projectors such as the InFocus IN36, because we found gaining an even focus all across the screen to be difficult. Fine lines and small text appear slightly soft, too, and across all the tests the EP7155 couldn't match the leaders.
And although the chassis feels solid enough to take a few on-the road knocks, there are areas where the EP7155 just doesn't appear very well put together. The focus and zoom controls feel slightly cheap and light, and this makes fine-tuning tricky. We weren't fans of the rather rattly buttons on the top of the projector, either, and we just couldn't get the cheap-feeling lens cap to lock in place.
Running costs aren't too exorbitant, which rescues it from mediocrity. The cost of a replacement bulb is £179, the cheapest of any of the DLP projectors in this Labs, and its cost over 10,000 hours, although not the cheapest, is on a par with those of the InFocus and Dell machines.
Nevertheless, if you absolutely must have a portable projector, the Optoma is well worth a look - there's nothing to rival its size and weight this month, and it isn't weak on the features front, either.
Author: Jonathan Bray
- Google ditches OpenSSL in Chrome
- Apple and Swatch to buddy up for iWatch release
- StubHub fraud: how hackers stole $1m using tickets
- Mobile success boosts Facebook's profit by 138%
- What's on this week's PC Pro podcast?
- Unlock your Moto X with a "tattoo"
- Samsung continues Tizen OS push with Galaxy Gear "upgrade"
- Killing the Surface Mini hit revenues, Microsoft reveals
- How to report website overblocking and miscategorisation to ISPs
- iPad sales stall as owners "too happy to upgrade"
- How Google Glass ruined my lunch hour
- Smartphone battery packs: can a USB power pack beat the festival battery blues?
- Windows Easy Transfer – not so "easy" in Windows 8.1
- Formula 1: what a difference virtualisation makes
- Office of the future: comfy chairs and tablets everywhere
- I went to Glastonbury and the only thing that got high was my smartphone
- Meet the robots helping teach children
- PaperLater: would you pay to print the internet?
- Amazon vs Kobo: how much to make the ebook switch?
- Phishing emails: how I nearly got caught out
- Hacking the Internet of Things: from smart cars to toilets
- BlackBerry Passport release date, specs, features, and rumours: when is the new BlackBerry coming out?
- What's changing in the computing curriculum
- Teaching kids to code
- Best free translation apps for iOS, Android and Windows Phone
- Five worst SMB security threats... and how to solve them
- Apple iOS vs Android vs Windows 8 – what's the best compact tablet OS?
- The 12 best tablets of 2014: what’s the best tablet on the market?
- How to free up hard disk space
- Driverless cars: could your next car be driven by a robot?
- How to add in-app purchasing to an iPhone, Android or Windows app
- Remote-control ransomware: TeamViewer and software hardball
- Why laptops with serial ports matter to the Internet of Things
- Make your mobile battery last longer
- Small steps into handling Big Data
- Nexus 5: does it really run stock Android?
- How to get broadband to a garden office
- How to write your company's IT security policy
- Raspberry Pi and Wolfram: a must-have for every child
- Could you get by with Office Web Apps?