Like the other day when I shot a company event in the Hockey Hall of Fame in Toronto. Shooting the Stanley Cup was tough, and sometimes you just have to take what you can get.
This quick grab-shot of the Original Stanley cup is illustrative. The cup reflects and you have to get close in a small room (the vault). Little space for umbrellas. The Plexiglas around the object reflects. The Plexiglas behind the object reflects, too. The existing lights cannot be turned off. Oh and there is limited time.
So then, you get this – best I could do under the circumstances. And my hands give it charm. That’s my theory and I am sticking to it.
One thing to keep in mind: flash systems will be confused by strong reflections. Either switch to centre-weighted flash metering, or use FEC (Flash compensation) of up to +2 or +3 stops, as needed.
Have you thought about using a polarizing lens to cut down on the glare/reflection?
Not 100% perfect, and of course it cuts down on the light a lot as well, but when taking pics of things behind glass/plexiglass I sometimes find that it is worthwhile.
Still better to do without and find an angle that doesn’t produce reflection or glare, but sometimes that is not an option.