Here�s a great 2-minute video tutorial that teaches a technique for fixing white balance in Photoshop. The basic idea is that you can locate a 50% gray point in a photo even if you didn�t use a gray card during the shoot. Once you identify a suitable point, you can use that Gray point in your Curves tool instead of simply selecting a Black point and a White point (a more basic color correction technique that may not work as well).
(via Graphics Geeks via Fstoppers)
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.