I was a guest at a wedding this weekend - registry office. They had a photographer with his bronica (medium format?) who seemed to take forever getting his shots.... leaving me plenty of time to wander round taking the same shots and a few alternatives with my 20D. As a side point - I notice he set up the outdoor shots with his camera facing the sun... and then used his flashgun. sun to light the hair for glow and flash for the faces? In fact I never saw him take a shot anywhere without the flash. After the ceremony there was a picture pause in the room. The registrars desk was in a huge bay window with light pouring in behind the stars of the show. No flash - I don't own one and the built in seems to feeble too be an option. I shot RAW so I could try the under + over exposed combi trick. I have now realised that I don't have much clue where to start If I use rawshooter I can up the exposure and burn out the windows and get the people reasonably well exposed. I can also lower the exposure and get nice green grass and stuff outside the windows + a near pitch black interior. I have a work copy of CS I can use but I have never used it much. I have my two versions on two layers - now what? If I have to trace the bright/dark border for a selection I shall give up the idea now. Is there a easy way to combine the two layers with a complex shaped light/dark border? These were only a few shots amongst a couple of hundred so it not a big problem to settle for the best I can get out of rawshooter.