Lets create a sepia tone photo with photoshop

Open the image that you want to give the effect

Convert the photo grayscale

chose image->mode->grayscale

sepia effect

now go to Image->mode->RGB

Add sepia photo filter

go to Image->Adjustment->Photo Filter

Choose sepia from the dialogue box

Set density to 85%

Double click on the layer preview

Now we have the final product

sepia effect

Credit: http://pshero.com/