Near sunset, photographers tend to fixate on the setting sun itself and often lose situational awareness to everything in their periphery and at six o'clock. Every now and again turn around and see what is behind you. These images demonstrate the difference 180 degrees can make.
Not sure if I will ever use or finish optimizing these images but I thought they showed an incredible variation that we sometimes miss. Interestingly, on this photo tour we had a total of eight photographers; six stayed with the setting sun and two looked east. The important thing is everyone was aware of what was happening with the light and made an informed choice where to shoot.