What's the best way to take photographs thru glass at a zoo? Any techniques

[PhotoAmateur]

What's the best way to take photographs thru glass at a zoo? Any techniques
for taking pictures of aquatic animals in an aquarium thru glass too? I
have a Canon EOS Elan IIe. What settings, equipment, film should I use?

[Glen]

Yes have your flash on a remote cord on another tripod. And have
it angled not 90 degrees. I used a flash meter and figure it out
you usually lost 1 stop shooting through glass and water. Good
luck. I have shot fish in aqauriams with good results. Its the
way to go as you get much better results than without flash

[jrf]

If you aren't going to use a flash, you need to get your lens right up to
the glass to eliminate reflections from your side of the glass. I have a
large flexible rubber lens shade that I use in such cases. I can lean it
against the glass and eliminate all reflections while its flexibility lets
me aim in differing directions.