I want to take a photo of an Apple Watch to show the scuff marks and the scratches on the watch face. However if I take a short cut and use an mobile phone to take a shot, because of the reflectiveness of the watch face surface, the watch face appears to be smooth.
I have read this SO answer which seems to be related: How do I photograph coins with a glossy surface?
However I find it hard to understand part of the answer:
The first thing to do is move the light to the side and put a dark object where it used to be. The dark object is now reflected in the coin, but that's not noticeable
I just find it incomprehensible to me. Maybe because I can't actually visualise the arrangement.
Therefore I want to ask this question specifically for an Apple watch. I as a hobbyist have access to a mirrorless camera (which is hopefully more capable than a mobile phone camera) but I don't have any sophisticated studio lighting equipment or light diffuser.
How can take a photo of the watch face that can shows the defects?