When it comes to tweaking and improving photos Photoshop is second to none. I am far from being a serious photographer. In fact I really rarely use the camera but one thing I know for sure, that is that by using curves in Photoshop you can improve the photos’ color and general look significantly. I will show you how to use curves on one real example. Few years ago a friend of mine visited Andes mountains and took many snapshots, I will use one of his photos to show you what you can achieve by using curves in Photoshop.