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LED vs CFL Bulbs: Color Temp, light spectrum, and more

Putting some LED and CFL bulbs on the test bench to see what's better.
- By Geoffrey Morrison
- Posted May 7, 2013
This is one of the nerdier posts I’ve done, but since I’m unabashedly a nerd, and I hope many of you are too, I figured it would work.
You see, I love LEDs. I think they’re fascinating in how they work, what they can do, and so on. As you’d expect, I’m slowly replacing the CFL bulbs in my house with LEDs.
The thing is, not all LED bulbs are equal, and one of the biggest drawbacks is that not all offer the “warmth” in color temperature most of us love in incandescents. So I put a few different LEDs on my test bench, measuring them sort of how I measure TVs, to see how they do.
Curious? Well I was, hopefully you will be too.

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Panasonic Low(ish)-Cost LED Projectors

Would someone please kill off UHP lamps already
- By Geoffrey Morrison
- Posted February 26, 2013
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I am a vocal and unrepentant projector fanatic. I think projectors represent the best value in home entertainment, and wish more people would embrace the awesome as I have (for over 10 years now).
However, projectors aren’t without drawbacks, and the UHP lamps in nearly all of them are a big one. Hot, expensive, and not particularly long lasting, UHP lamp replacement is often cited as one of the biggest annoyances of projector ownership. The alternative, LED lighting, has mostly just been found in uber-high-end projectors, and inexpensive wee little projectors.
But not anymore.

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Philips Hue Review

For you, too, to view
- By Geoffrey Morrison
- Posted February 18, 2013
Lighting is a powerful thing. Lighting can set a mood consciously, and perhaps subconsciously too. Does anyone like the green, cold bluish look of a florescent-lit cubeland office? How about a candle-lit dinner? By a fireplace? What about a cool winter morning, or a hot summer sunset?
The color of light plays a significant role in our lives, and most of the time, we barely notice. The comely nature of incandescent light bulbs has been disappearing for years, replaced by CFLs that despite a similar color temperature, offer little of their predecessor’s warmth (literally).
Enter LEDs: Energy efficient sure, but more importantly, with red, green, and blue diodes, able to generate any color imaginable. If only someone would hook one up to an app. Oh wait!

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Review: ViewSonic Pro9000 LED/Laser Hybrid Projector

LEDs AND Lasers
- By Geoffrey Morrison
- Posted December 31, 2012
Can I like the idea of a thing, better than the thing? This is the question I’m pondering as I write up this admittedly cool LED/laser hybrid projector from ViewSonic. Instead of UHP lamps or even “regular” LEDs, the Pro9000 adds a laser to the mix, because ... well because it’s cool, right?
While it gets an “A” on the technology front, its performance grade is notably lower.

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From Sharp minds come large products

Sharp introduces a new line of 70" LED LCD TVs; time to get rid of those extra bookshelves
- By Michael Berk
- Posted April 14, 2011
Sharp yesterday announced a new line of 70" Aquos Quattron LED-backlit LCD TVs, responding to market research indicating that their target market of 35 to 45 year old men—even those already owning 60"-plus sets—felt a "need to go bigger." The new LC-70LE732U (shipping now at an MSRP of $3,799) is truly immense; the launch event—also a fundraiser for Japan earthquake/tsunami relief—featured the

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Review: Optoma PT100 PlayTime Projector

A big picture at a small price from Optoma's pint-sized projector
- By Kevin James
- Posted April 11, 2011
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Mitsubishi to exit LCD TV market
- By Michael Berk
- Posted March 21, 2011
As noted by HDGuru over the weekend, Mitsubishi Digital Electronics America has confirmed that it will indeed "exit the LCD-TV market entirely" by the end of 2011, concentrating from here on out on its consumer rear-projection televisions (including its highly regarded

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CEDIA 2010: 2D Video Projectors
- By sandv blog
- Posted September 25, 2010
A few large manufacturers excepted, most of the video projection industry seems in no big rush to get into 3D. As a result, there was plenty of 2D projection action at this year’s CEDIA Expo, a gathering in Atlanta this week of custom installers and the manufacturers who supply them.

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Test Report: LG 47LX6500 3D LCD HDTV

Solid 3D and a wide viewing angle distinguish LG's 6500 series TVs.
- By Al Griffin
- Posted September 17, 2010
For some, 3D TV’s arrival came on a bit too suddenly. Avatar was still lighting up theater screens when the first 3D sets checked in to tempt us with the promise of stereoscopic golf tournaments — as if that alone was reason enough to buy a new TV.

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LG unveiling new high-tech HDTVs at IFA
- By sandv blog
- Posted August 30, 2010
The IFA consumer electronics trade show in Berlin is giving electronics companies ample opportunity to show off their newest toys, and LG is taking that opportunity and run with it.

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LG unveils its first 3D LED HDTV
- By sandv blog
- Posted March 25, 2010
3D marches on, with a notable advance in LED display technology.

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LEDs light Sharp's newest line of HDTVs
- By sandv blog
- Posted July 8, 2009
Yesterday, Sharp announced its newest HDTV line, the Aquos LED series. As its name implies, the Aquos LED HDTVs use LED backlighting instead of conventional CCFL.
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