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My wife also likes having super-bright lights in her home office. We ended up getting something like this: https://www.amazon.com/150W-Adjustable-15000LM-Deform

by imgabe 5y ago

My wife also likes having super-bright lights in her home office. We ended up getting something like this: https://www.amazon.com/150W-Adjustable-15000LM-Deformable-Workshop/dp/B09DKC4L8P/ref=sr_1_6 https://www.amazon.com/150W-Adjustable-15000LM-Deformable-Wo... It's not quite 20k lumens, and you can't adjust the color temperature, but it is very bright and fits in a standard light socket. For other bright lighting options look for "high-bay" or "shop" lights. High-bay lights are intended to be installed in warehouses or places with very tall ceilings so they tend to be very bright.

bradknowles 5y ago
And their color balance is almost always way off. So is their CRI.
- namibj 5y ago
  Not inherently, though. I doubt it's much harder to find good high bay lamps than it is to find good E27 lamps, and expect the opposite once you cross the 20-30 W limit that's realistic for a passively cooled normal-sized E27.
  - bradknowles 5y ago
    Sure, you could build 95CRI lamps at 2700K, or 3000K, or whatever lower color temperature you want. Build whatever you want with the right LED type. But can you actually easily find them on the commercial market, outside of tape reels? Every garage light or high bay LED light I've found is always at or above 5000K, and their CRI is almost never listed. The CRI might never even be officially tested. If you do have sources for garage or high bay lights that do have a low color temperature but a high CRI, please let me know. Because right now I'm stuck with a 50W corn bulb, and even though it's supposedly low color temperature, I can tell you that the CRI is absolutely horrible and this is the upper limit of how far I can go with this manufacturer.
    - nicoburns 5y ago
      If you're willing to hook up the power supply and cooling yourself, then I suspect this would be excellent https://www.amazon.co.uk/dp/B08H5BWJ86 https://www.amazon.co.uk/dp/B08H5BWJ86 Also available off AliExpress (but it's not any cheaper). IME, if the CRI is high enough then the cooler colour temperatures are much more pleasant and 4-5k is ideal.
      - bradknowles 5y ago
        That would get you 20,000 lumens out of a 200w panel, which is a lot closer to what I think the original post was all about. You'd still have to wire the whole thing up, however. Unfortunately, that doesn't help me with my problem of trying to get a brighter and higher CRI "bulb" for my garage. I have resisted replacing the T-8 fluorescent light fixture, because I'd like to have a mix of technologies for the lights in that space. You know, in case the temperature in the garage gets too low and takes out one or the other technology -- I've seen major flickering and strobing with LED lights when it's really cold outside. But I am starting to wonder if maybe I should replace the T-8 with LED-based models.
        namibj 5y ago
        If T8 is what you want and you can handle the 15 2ft pack size, you can get them for $800 at 3200K: https://store.yujiintl.com/collections/high-cri-light-fixtures/products/bc-series-high-cri-t12-led-tube?variant=41785289043 https://store.yujiintl.com/collections/high-cri-light-fixtur...
      - namibj 5y ago
        You don't even need to go that far if you accept neutral white; see this one from Yuji: 150W 13600lm CRI95+ 4000K high bay for $230: https://store.yujiintl.com/collections/high-cri-light-fixtures/products/high-cri-95-high-bay-ufo-led-light-pack-1pc https://store.yujiintl.com/collections/high-cri-light-fixtur... There's a slightly more expensive (per-W) 200W version there that's dimmable and has an optional microwave motion detector.
    - convolvatron 5y ago

by imgabe 5y ago

bradknowles 5y ago

And their color balance is almost always way off. So is their CRI.

namibj 5y ago
Not inherently, though. I doubt it's much harder to find good high bay lamps than it is to find good E27 lamps, and expect the opposite once you cross the 20-30 W limit that's realistic for a passively cooled normal-sized E27.
- bradknowles 5y ago
  Sure, you could build 95CRI lamps at 2700K, or 3000K, or whatever lower color temperature you want. Build whatever you want with the right LED type. But can you actually easily find them on the commercial market, outside of tape reels? Every garage light or high bay LED light I've found is always at or above 5000K, and their CRI is almost never listed. The CRI might never even be officially tested. If you do have sources for garage or high bay lights that do have a low color temperature but a high CRI, please let me know. Because right now I'm stuck with a 50W corn bulb, and even though it's supposedly low color temperature, I can tell you that the CRI is absolutely horrible and this is the upper limit of how far I can go with this manufacturer.
  - nicoburns 5y ago
    If you're willing to hook up the power supply and cooling yourself, then I suspect this would be excellent https://www.amazon.co.uk/dp/B08H5BWJ86 https://www.amazon.co.uk/dp/B08H5BWJ86 Also available off AliExpress (but it's not any cheaper). IME, if the CRI is high enough then the cooler colour temperatures are much more pleasant and 4-5k is ideal.
    - bradknowles 5y ago
      That would get you 20,000 lumens out of a 200w panel, which is a lot closer to what I think the original post was all about. You'd still have to wire the whole thing up, however. Unfortunately, that doesn't help me with my problem of trying to get a brighter and higher CRI "bulb" for my garage. I have resisted replacing the T-8 fluorescent light fixture, because I'd like to have a mix of technologies for the lights in that space. You know, in case the temperature in the garage gets too low and takes out one or the other technology -- I've seen major flickering and strobing with LED lights when it's really cold outside. But I am starting to wonder if maybe I should replace the T-8 with LED-based models.
      - namibj 5y ago
        If T8 is what you want and you can handle the 15 2ft pack size, you can get them for $800 at 3200K: https://store.yujiintl.com/collections/high-cri-light-fixtures/products/bc-series-high-cri-t12-led-tube?variant=41785289043 https://store.yujiintl.com/collections/high-cri-light-fixtur...
    - namibj 5y ago
      You don't even need to go that far if you accept neutral white; see this one from Yuji: 150W 13600lm CRI95+ 4000K high bay for $230: https://store.yujiintl.com/collections/high-cri-light-fixtures/products/high-cri-95-high-bay-ufo-led-light-pack-1pc https://store.yujiintl.com/collections/high-cri-light-fixtur... There's a slightly more expensive (per-W) 200W version there that's dimmable and has an optional microwave motion detector.
  - convolvatron 5y ago