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I've been looking for a portable reading light to use with my Sony Reader PRS-500. Finding the LightWedge here on Amazon, I thought I'd given it a try even though it makes no claims that it would be suitable for anything beyond a REAL paper book. But with the relatively low price it seemed a reasonable gamble and besides, given the reviews it's clear that it would work with regular, tried-and-true paper books and magazines, which in actual use I found it does indeed do very well.Even as a reading light for Sony's electronic reader it works quite well, but how WELL it works does depend upon the angle that I need hold the Reader relatively to my eyes. Any angle that's not close to perfectly perpendicular to my face, and there's a "glaring" problem (sorry...bad pun I know). The lack of a backlight on Sony's electronic ink device means any user must operate it just like regular printed reading material, so to read in low or no ambient light an external light source is mandatory. The LED, as great as they are shining on a printed page, given the wrong viewing angle are too intense even for the matte-finished LCD screen of the Sony Reader, even when set on the lowest of the two lighting settings.
While the bright, blue-white given off by the LEDs is relatively easy on my eyes on printed paper, there's often a brutally intense, three-spotted focused reflective glare bouncing off from the face of the LCD of the Reader. This makes reading the immediate surrounding text difficult if not impossible to read when the Sony is held at an angle to my face, and requires constant fiddling with the angle of the LED light housing or adjusting the hold on the Reader to make it perpendicular to my eyes' line-of-sight. Moreover, the non-'inked' portion of the Sony's LCD (the background to the text) is rather dark compared to the usual printed page, and makes the overall lighting effect of the LCD seem rather cold and sterile relative to its look on the printed page. That said, it does light the screen pretty well, but at the cost of having to read with a specific viewing posture--something that for me can be hard to do when attempting to read in bed or lying around on the couch.
The unit's batteries are another bone for me to pick on. Rated at 30 hours of use per fresh set of batteries, the LightWedge relies on two relatively large, button-type CR-2450 3V lithium watch cells for juice. Not exactly cheap and not necessarily the most common size around, the batteries are a literal drain on the wallet. In a watch you could easily get a year's worth of use out of one of them. But if you read in bed an hour a night, you're replacing TWO of these roughly every month. Assuming the cost of a pair of these cells at $3 a set (that's what a lone seller here on Amazon charges at the time of this review), that's $36 a year in batteries just for a little night reading. I'd go through nearly a couple of sets of batteries before I even use up a single charge on the rechargeable Li-ion cell built into the Sony Reader. Frankly, I think it might be advantageous for the makers of LightWedge or any other LED light maker to devise a slimline rechargeable solution instead, even if it costs more up front. Certainly within a couple of years it will have paid for itself, seems more congruent with the long-lived nature of LEDs, and we wouldn't have all these spent lithium watch batteries to dispose of.
In general, the LightWedge offers a decent non-AC solution for low-light reading, particular with printed page media. Less obstrusive that most table lamps and certainly portable, the LightWedge is easily adjustable for tackling almost any sort of book or magazine, as long as you don't have any problems with the cost of operating the unit and have a well-stocked source for all of those batteries you will end up needing at some point.
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