White balance.

Your brain makes constant adjustments, enabling you to recognize a white object as white whether it's under moonlight, candlelight, daylight or incandescent light. Unlike your brain, digital cameras need the help of White Balance. For this reason, the DSC-R1 incorporates five white balance presets, manual white balance and white balance tuning from -3 to +3. And unlike D-SLRs, the R1 enables you to preview the effect of your adjustments in the LCD monitor and electronic viewfinder!