Hard to believe but this digital lomography photo was taken with the camera pointed towards the midday sun using the in-camera low contrast setting. No photoshop or any other post editing software have been used. What you see came straight from the camera itself. A number of in-camera settings and filters are included on the Yashica EZ F521 to produce the effects you require. The Yashica has six digital colour settings that can be applied during shooting; Normal, Sepia, B/W, Negative, Red, Green and Blue. There are also a selection post filters that can be applied after the photo has been taken including contrast, cool, warm, evening and binarize. You can apply these an infinite number of times to the same image, and it's all done in-camera.
No longer available as the Yashica EZF521, this camera is now branded as Takashi FX521.