Slow reflections

[JOSE DUENAS]

Hello....

I've been doing an architectural visualization.... and of course, lots of buildings with glass....

Something really strange is happening.... Reflections are rendered normally with objects that I can see in the camera (for example buildings or other structures in front of the glass).... but when I try to put a cilinder mapped with a background behind the camera in order to be the reflection of the glass I'm looking at... the rendering times are incredibly longer......

Is there something I'm doing wrong?? or is there another option to avoid this problem??? Is it a normal thing??

Thanks,
Jose Luis

[asango]

just put the map in the 'override max reflections' slot on the enviornment tab in the render settings. its independant of max's render enviornment so you have a different image visible in the bg than the one which is used for reflections.