To quickly create a simple sepia effect in Photoshop, do the following:
1)Import your photo and then select the adjustment layer “Hue & Saturation”
2)Check colorize and enter the following values and hit ok! Done.
You can play with the Hue slider and the Saturation slider to add/decrease the intensity of the effect.
source:----------------------------------------------
http://www.acuitydesigns.net/30-second-sepia-effect-photoshop-tutorial/
