how to edit buildings in photoshop

The building is modeled in sketchup and rendered using the demo version of Shaderlight. Patulong po, baguhan kasi ako. Paano ko ba i-eedit yung background ng building ko sa photoshop, gusto ko kasi palitan ng realistic background from a real photo. Image masking ba ang solusyon???

Hello po.. kindly visit our tutorial section ..

http://www.cgpinoy.org/t2909-background-manipulation-made-easy?highlight=background

at pag aralan mo ang tinuro ni master bokkins. Hope naka help.

Try mo save as png yung output mo, I'm not sure kung magwork ito sa shadelight. Ang pag nag work, tatanggalin nya ang background mo automatically.