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Cree LED bulbs at Home Depot $13 — Parallax Forums

Cree LED bulbs at Home Depot $13

Ron CzapalaRon Czapala Posts: 2,418
edited 2013-04-25 16:40 in General Discussion
Home Depot is now carrying Cree 60W and 40W equivalent LED bulbs for around $13.

NOTE: They sell Warm White and Daylight so be careful which you pick up.

The are slightly taller than regular bulbs but shaped the same and vitrually 360 degrees.

They appear brighter than other LED bulbs I have purchased. I bought two and went back for two more.


Cree 9.5-Watt (60W) A19 Warm White (2700K) LED Light Bulb

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Comments

  • Ron CzapalaRon Czapala Posts: 2,418
    edited 2013-04-20 17:09
    Here is a video showing what the LED tower looks like.

    Looks like there are 20 LEDS inside.
  • wasswass Posts: 151
    edited 2013-04-20 21:01
    Optically, they are very nice bulbs for LED's. They fit all the fixtures I've tried them in and have a rubbery coating on them to keep the glass from shattering if dropped, it makes them really easy to grip as well. My only gripe is that there is a small dark spot on the top of the bulb that you can clearly see if installed in a frosted globe ceiling fixture.
  • henrytjhenrytj Posts: 90
    edited 2013-04-22 15:26
    I wonder how these would work as movie lights. CFs have a reputation of having a flicker that sometimes shows up on video. And how good is the color balance.

    Always looking for alternatives for hot (very hot) movie lights. Of course, at 60w equivalent, they are kind of pricy to have to buy a bunch of them. But if they have 100w versions and the price drops. It would be worth considering.
  • prof_brainoprof_braino Posts: 4,313
    edited 2013-04-22 18:48
    henrytj wrote: »
    .... CFs have a reputation of having a flicker ...

    .. 60w equivalent...100w versions and the price drops.

    So far, many of the cheaper predecessors (Fiet, etc) can have flicker when dimmed. This comes and goes, its not visible at max, it can be fixed by adjusting the dimmer agressively. So to me it feels like the circuit is doing something weird with the AC. This batch of 60W replacement from Cree have not exhibited this to me so far, but mines only a week or two old. The Cree seems better than even the Phillips. At 800 lumens, its pretty good. I have not forked out the $$ for the 1100 lumen or 1600 lumen parts, its seems like they would cook themselves and shorten life. I'm waiting on those, but thats where I'm heading. I spend too much time on LED lights....
  • CuriousOneCuriousOne Posts: 931
    edited 2013-04-22 21:56
    Just a side note, PWM dimming is always evil on eyes. So, if you have chance, disable PWM dimming and use feedback voltage adjustment to adjust brightness.
  • henrytjhenrytj Posts: 90
    edited 2013-04-23 08:32
    I'm wondering about shooting video though. No so much flicker visible to the human eye, but that shows up on video because the bulb is ON and OFF 60 times a second, and its not always exactly in sync with a video camera. Some CFs are known to produce a noticeable flicker that shows up on video.
  • electronupdateelectronupdate Posts: 2
    edited 2013-04-25 07:34
    The Cree bulb is quite directional. No problems, however, shooting video with them on my camera. A video here which compares this bulb with others:

    http://www.youtube.com/watch?v=I1DuVDD8Nmc
  • Ron CzapalaRon Czapala Posts: 2,418
    edited 2013-04-25 09:02
    electronupdate wrote: »
    The Cree bulb is quite directional. No problems, however, shooting video with them on my camera. A video here which compares this bulb with others:

    http://www.youtube.com/watch?v=I1DuVDD8Nmc

    Thanks for creating the comparison video!

    Cree should move or add a couple of LEDS to the top of the tower. Most of my lamps have cloth shades so the Cree bulbs do a great job.

    I have two of the 75W and one 60W equivalent Philips bulbs. They are excellent but rather expensive...
  • CuriousOneCuriousOne Posts: 931
    edited 2013-04-25 11:12
    Yes, thanks for video, a great work. Just to note, the kind of luxmeter you use is not suited for led sources. It favors certain phosphors, so a weaker led can "win" against the more powerful led.
  • electronupdateelectronupdate Posts: 2
    edited 2013-04-25 13:11
    Good point, light meters are indeed sensitive to only a specific set of wavelengths and their response is rarely flat .... however, in this video these are all "2700k" bulbs (with the exception of the one pointed out as being 3000K).

    If these bulbs are all the same in regards to both lumens and 'color' they should all produce the same reading on the meter.
  • CuriousOneCuriousOne Posts: 931
    edited 2013-04-25 13:15
    I own the same one (bought on amazon), and was quite amazed when accidentially, I've covered a led with specific color gel, and luxmeter reading actually increased! It is not all about specific wavelength, it seems more like that certain relation of phosphor intensivity makes it mad. Remember color calibrators? earlier models which were fine on CRT displays and LCD displays with CCFL backlight, refused to properly work on LED backlight LCD displays, so, intensity measuring of white leds is totally different story.
  • henrytjhenrytj Posts: 90
    edited 2013-04-25 16:40
    electronupdate wrote: »
    The Cree bulb is quite directional. No problems, however, shooting video with them on my camera. A video here which compares this bulb with others:

    http://www.youtube.com/watch?v=I1DuVDD8Nmc

    From the video it seems the "Phillips bulb #2" being about 2000lux axially directional (not sure that is the right phrase) seem the best for what I'm planning. Though its 3000K color temp could be an issue. I'll take a look for these at Home depot. Anyway to confirm the exact model number of that bulb?

    If it's the bulb I think I found, it looks like it's slightly discounted at a 2-pack.
    http://www.homedepot.com/p/Philips-10-5-Watt-60W-A19-Soft-White-3000K-LED-Light-Bulb-2-Pack-424895/203630147#.UXm9ycosnKc
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