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I am trying to take pictures with a smartphone camera of scratches which may/may not exist on another powered off smart phone. Is there a way to do this without changing the angle of the camera?

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    \$\begingroup\$ Why "without changing the angle"? \$\endgroup\$
    – mattdm
    Nov 21, 2019 at 10:20
  • \$\begingroup\$ I need to capture images of many phones so ideally I have a fixed camera pointed a surface and I just replace the "subject" phones. \$\endgroup\$
    – Brandon Eller
    Nov 21, 2019 at 10:32

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Change the angle of the lighting? To make scratches visible, you want them to be able to cast shadows (or rather have a shadow cast onto them), so the lighting should be quite from the side. Don't use an on-camera light or flash, obviously.

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