If you forget the set the white balance on your camera, photo-editing software can easily fix that. But what do you do when your image has mixed lighting? Combined, Lightroom's local adjustment brush ...

Marumi's amazing Magnetic Graduated Neutral Density use science, rather than slots ...

Cokin's Z-Pro Nuances Extreme Graduated ND filters are some of the most expensive on the market, but I reckon they're worth the asking price ...