Is there a fast, efficient way to position a mirror in order for it to reflect a desired object, and for that reflection to be visible to the camera used for the render?  I usually get by with trial and error, but I'm thinking there has to be a better way...

I switch to another camera to help position it, but this only helps somewhat. Still a lot of  tweaking the mirror's position, and test renders. I know that it can't be directly behind my object, unless it is set at some angle.

For example, I have a camera pointed up at figure, and its proving difficult to position a mirror behind the figure in order to get the reflection I want.

Just now I experimented with trying to set up a long prop along the POV of the camera to be used for the render, then try to align the mirror using this line-of-sight prop, if you get my meaning.  Not sure if this will help, as I'm doing yet another test render now....

Just to be clear: I don't have a problem with creating a reflecting surface, just the positioning of the surface.

Any tips? Thanks.

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