Takes a lot more direct uv rays to completely erase an EPROM. Theoretically it could do something if left long enough but for a quick photo I doubt it.
One year ago, i wanted to take a picture of my A2386 board without the sticker on the EPROM, exactly like this guy, and two flashes trashed the EPROM. The card stopped to work, until i got a brand new EPROM that someone burnt for me.