While I was testing the capabilities of the glowing item frames, I realized, they don't illuminate light onto a player even when fully surrounded by them.
In the picture below, I'm using a fully white map in glowing item frames and my player is in the middle of the room
MC-212258
Glowing Item frames don't light up the player
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Glowing item frames don't illuminate light at all. They only have emissive textures which gives the effect of lighting themselves up but nothing else around it.