Reviewers say the Vivitek D511 portable digital projector delivers good image quality, but that its real advantage lies in its value. At 2,600 lumens, things aren't quite as bright as better performers, such as the Epson PowerLite 1775W (*Est. $1,150) , but there's more than enough light output to meet the needs of most presentations. That said, a limited zoom range and short throw does limit placement flexibility to some extent, though finding a spot in a moderately sized meeting room shouldn't pose too much of a challenge.
Images are sharp and colors and contrast are good, but uniformity isn't perfect. The color wheel in this DLP projector is on the slow side, meaning a small percentage of viewers might see DLP's rainbow effect artifact. Ease of use is good -- as long as you don't lose the small remote control. The speakers are on the weak side, though sound quality itself isn't bad. Some complain that the construction could be sturdier. The inclusion of 3-D capability comes in for some praise, though reviewers also say few people will need that feature.
The most helpful review of the Vivitek D511 is at ProjectorCentral.com, which puts the portable digital projector through its paces and details pluses and minuses. The review in Britain's What Laptop isn't quite as detailed, but is balanced and testing based. More than 50 users at Amazon.com are generally complimentary of the projector's overall value.
Projector Central gives the D511 5 out of 5 stars for value and stamps it with its Highly Rated designation. Reviewer Allan Abbott likes the functionality of the D511, noting that it handles most data and video analog inputs. Also, it's small and light enough for any mobile presenter yet bright enough to capture an audience's attention in a small conference room. Abbott concludes that the D511 offers great bang for the buck and represents an outstanding value in the current market.
Review: Vivitek D511 Mobile Business Projector Review, Allan Abbott, April 29, 2010
More than 50 Amazon users give the Vivitek D511 projector an overall rating of 4 stars, with the majority awarding a perfect 5-star score. Customers gave it high marks for picture quality and brightness, especially for its price level, but there were some complaints from those who found build quality to be lacking.
Review: Vivitek D511, Contributors to Amazon.com
In a report that originally appeared in Britain's What Laptop magazine, reviewer Michael Browne finds enough to like with the Vivitek D511 to give it a solid 4-star rating, adding that it's a perfect example of what an entry-level portable digital projector should be. Placement flexibility and construction quality are mildly criticized. Image quality is praised, but value comes in for the biggest kudos of all.
Review: Vivitek D511 Review, Michael Browne, April 30, 2010