I use 90CRI LED lights where I study. They are Philips' non-flickering, dimmable, High CRI bulbs, yet my classic 25W halogen table lamp still provides a far better reading experience. The spiky spectra of LED lights are not comfortable for eyes as a full-spectra incandescent light, let it be classic or halogen.
90CRI isn't good enough to replicate an incandescent bulb in my experience. Something in the high 90's can be much better (but admittedly hard to find). And of course you may want to match your preferred color temperature too.
For reading black & white text, incandescent lamps are perfectly fine.
However, if your book has color illustrations, a high-quality neutral-white LED lamp is better than any unfiltered incandescent lamp.
A standard white illuminant with filtered incandescent lamps would be even better, but such lamps, as they were made a century ago, were extremely good space heaters, which may prevent their use for reading a book.
bayindirh|1 month ago
nicoburns|1 month ago
adrian_b|1 month ago
However, if your book has color illustrations, a high-quality neutral-white LED lamp is better than any unfiltered incandescent lamp.
A standard white illuminant with filtered incandescent lamps would be even better, but such lamps, as they were made a century ago, were extremely good space heaters, which may prevent their use for reading a book.