projectors

Epson PowerLite Home Cinema 705HD

Compact & bright projector that produces a lot of light, but lackluster color performance.

July 04, 2010
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Throw

All projectors have a distance (or range of distances) across which they can project (or "throw") an image. This is important as it determines where the projector has to be mounted. If a projector has a small throw distance, it can be located close to the screen. If it has a long throw distance, it can be placed far back, away from the screen. Some projector (like the 705HD) also include a zoom lens which allows you to adjust the throw angle, and this makes the projector more flexible. To project onto a 64-inch screen (measured diagonally), the 705HD has to be placed between 6 foot 7 inches and 7 foot 9 inches away.

Screen Brightness

The bigger the screen, the less bright the image that the projector produces. In the table below, we calculated how bright the image would be for a number of different sizes, and if this would be usable in a number of different lighting situations.

We found that the 705HD produces an image which would still be usable up to about 120 inches in a darkened room (such as your living room at night), but would only be usable in a typical office to a size of about 64 inches: anything bigger than this, the image becomes almost unrecognizable, as it is not visible.

To show how the image would look in a number of different lighting levels, we project a test image onto our test screen (which is 80 inches on the diagonal) and adjust the light levels. As you can see below, the image becomes rather pale and unattractive at the higher light levels, so this proejctor would do a poor job in a moderate and well-lit room: it simply can't produce enough light to still be visible with moderate ambient light.

ambient-light.jpg
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Screen Materials

You don't always have a projection screen handy: sometimes, you have to project onto whatever is on the walls. Below, you can see photos of the images that this projector produced when shining onto a number of materials: a white-painted wall, a cream painted wall, wood paneling and a glossy whiteboard screen. The 705HD doesn't have many options to compensate for different materials or colors, apart from a color tint control that can be used to tweak the color to some degree. Other projectors offer a number of presets for different paint colors, but the 705HD does not.

Optical Issues

We use a number of test screens to examine the optical performance of projectors, but we found very few issues with the 705HD: it produced a very clean, sharp image across our test screen. The top image is the original test screen that we are projecting, with the crops below showing how the proejctor reproduces the image. As you can see, the result is a sharp, clean image with little or no distortion or other issues.

Video Processing

The 705HD includes a few video processing features. However, we found that most didn't have any significant effect on image quality.

Formats

The 705HD is a WXGA projector, with a native resolution of 1280 by 800 pixels. The cloest video equivalent to that is 720p, with a resolution of 1280 by 720.

Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.

Sections

  1. Introduction
  2. Tour & Design
  3. Blacks & Whites
  4. Color Accuracy
  5. Motion
  6. 3D
  7. Viewing Effects
  8. Calibration
  9. Remote Control
  10. Connectivity & Media
  11. Power, Noise & Heat
  12. ViewSonic PJD6531w Comparison
  13. Optoma HD66 Comparison
  14. Canon LV-8310 Comparison
  15. Conclusion
Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.
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Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.

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