Well, there is away around that depending on how into it you want to get . First off, a polarizing filter is amazing at cutting glare and reflections. That in and of itself might make your day . If you really want to get into it then you need a tripod. Take one image, then another with the light source from a slightly different angle. Merge the two and you can effectively "erase" the hotspots. That requires some time and software though . That said it is hard to capture the full essence sometimes of these paints. Especially the metallics, flakes and pearls. I find the sensors sometimes just can't render the color gamut as we see it either.