[NorthMountain]

Is that why the LED lights I purchase as a replacement for an Edison type incandescent light bulb is such a crappy replacement?

Define "crappy".

[Texas Fossil]

define crappy?

You can hardly read by them. It will light the room well enough so you don’t run into things but try to shoot a photo under “daylight” LED light bulbs and you won’t be able to view the pic well at all. Take the same picture under even shaded daylight, it is like night and day comparisons.

I knew the LED light was not pleasing light, but until I took photos under it, I did not know why.

I have 6 so called 60W (by lumens) (9W power consumption) LED light bulbs over my kitchen table. Compared to the incandescent lamps that were previously in the fixture we have <1/4 the light level (not measured with light meter). And the glare is much worse.

[Texas Fossil]

Thanks for the graph. If it is accurate as to emission level, looks like LED lamps produce roughly 1/2 the emission of an incandescent lamp. And that the emission of the LED lamp has a pronounced spike of intensity and rest of the spectrum is 1/2 that spike level.

That uneven emission spectrum might explain why it sucks to read by.