Adobe Photoshop CC is one of the best photo editors available.
Also useful for graphics designing.Can be used to design passes, logo, banners, pamphlets much more on it, you can turn any usual sketch into Highly lucrative graphical one, it has a good demand in an industry too, moreover, the Adobe community is popular n powerful too with loads of featured tools.
Highly suggested, if you want to go through a learning curve.In short, you can do whatever you want to in your photo with this.