How can I take a photo of a picture in a glass frame?

[arcadian]

Without getting a reflection? Is it impossible? Like in a museum and such.

[ManiacJoe]

1. Depends on where the light is coming from.

If the light is from the top, try standing slightly to the side.

If you are allowed to use a tripod (not likely in a museum), a polarizing filter will remove much (if not all) of the reflection at the cost of low shutter speeds.

[arcadian]

2. Thanks, I'll try the polarizing filter.

The problem with standing to the side is that the picture won't be squared off. It's a pretty low lite area inside of a state capitol building, actually. The only place worst than that for lighting that I can think of is a church.

[ManiacJoe]

3. Everything is a trade off.

Yes, standing to the side throws off the perspective.

The polarizing filter eats LOTS of light (2+ stops?). If you are not allowed a tripod, see if they will allow a monopod.