Many cell phone cameras respond to IR, showing it either as white or as a pale purple. This is great when we want to verify that a remote control is outputting IR.

But I've noticed that photos of sunsets are a lot brighter, and less red, than the visible sunset. And while there's A LOT of red in the sky and the clouds, obviously visible reds are white in the photos. It's as though IR in the sunset is converted to white.

Anybody have some idea if there are IR filters for cell phones? I've looked using google. All I've found is how to do the opposite: filter out visible light to see only IR. I want to filter out the IR so it doesn't influence the photo.

Thanks for any, uh.... light you can shed on this.