Sometimes you think your white balance is correct when taking photos, and then in post processing you realize, well, it wasn’t. Such was the case with the above photo of roasted beet hummus.
Both images have already been brightened up and contrasted a bit, but the image on the left has a blue-ish tint that was giving it too much of a “cool” tone for my liking. I wanted the photo to be a bit warmer, so I used the photo filter tool in Photoshop to custom color balance the image. See the short, 1 minute tutorial below to see exactly how I corrected this problem.
Photo filter is a helpful tool for correcting white balance, and it’s also great for enhancing the color of a certain area of your photo.
In this image, for instance, if I wanted the hummus to appear more purple instead of pink, I could simply apply a purple photo filter, reverse that layer by hitting “command i” or “Image -> Adjustments -> Invert” and then painting the purple back on with the paint brush tool. Do this by selecting the paint brush tool after you’ve applied the purple filter, selecting the color “white,” and then adjusting your brush size so it’s large enough to quickly paint over the hummus area. This allows you to manipulate the color of the hummus without making the carrots or cucumbers appear purple as well.
See the image below for an example of this effect.
I’m sure there’s many other uses for photo filters, but these are two quick ways I’ve found the fool to be useful.