I recently bought a D7100 and have been playing around with Aperture settings and WB settings. My indoor photographs seem to have a red / orange hue in them . i had set the WB to shade and not Auto. Can some one let me know what I am missing?
Light in the shade is quite blue, so the camera will warm things up when you set the WB to shade. Indoors is usually warm to start with if there are lights on (depending on the lights). If so, a shade WB will warm it even further. Use Auto WB and shoot RAW.
Generally speaking most home lighting is incandescent and as note is quite warm. In fact it's usually around 2800K which is beyond what AWB can handle and the only way to get an accurate WB is to either do a Custom WB or if you know the temperature of the light source set it manually.
As Alan was eluding to in shooting RAW, a RAW file does not have white balance applied until post-processing.
If you do a custom white balance (CWB) using a gray card or an expodisk the white balance information is stored and given to Lightroom (Lr) or Adobe Camera RAW (ACR) for post-processing and can be applied then.
Another option is to take a shot of a gray card or a ColorChecker Passport in the same light and use it to set white balance in Lr or ACR using the little WB eye-dropper tool. A second benefit to the ColorChecker Passport is the ability to create a color profile for your camera's sensor that can be used in Lr or ACR to correct colors for the individual camera sensor. You can then shoot, say, a wedding, with multiple cameras and have all the colors match regardless of the camera used!