When I was a kid, my father taught me that a good photograph needs a foreground, middleground and background. It is one of the very basic composition rules. And still valid today. But what if you're not shooting landscapes? And what if there is no foreground on your set?
When it comes to color grading, there are thousands of techniques. You can't
say one method is better than the other. And none of them works universal for
all images. Probably like all photographers, I try to photograph light and colors
in a way I want them, so I have less work in post production. For images that
look almost perfect out of cam, color grading using Photoshop's gradient map
is a very quick method.
In photography it's all about light. The quality and quantity of light, soft and harsh light. But one of the most important aspects is the direction of light. It's always good to know from where the sun shines at what time.