color correction

Gents, I'm in a very weird situation. 2 of my laptops (Windows and Mac) are working perfectly with 4k TV's but sub-par with ultrawide monitors. The ultrawide monitor is the Samsung C34f791, and I also tried with Samsung S34E790 and the results were the same (or slightly worse) Here's what I've...

Hi chaps I am struggling with obtaining a consistant colour balance indoors using a purple background during close up photography. I am using ambient light (natural daylight) and no artificial lighting at all. So, the camera is a Canon 5D II, the lenses either 70-200 F4L or 24-105 F4L...