Last week, I started a technical series of how to post process photos of stained glass windows. In Part 1, I went over taking and selecting which photo to use, making adjustments in Adobe Lightroom, and moving the picture to Adobe Photoshop for more complex work.
Part 2 showed how to correct for distortion (i.e., keystone effect) and adding in a hue / saturation layer.
Now that a hue / saturation layer is in place, it’s time to create a mask. The mask blocks out what part of the picture I don’t want adjusted with the next step. In this case, I will block out the background, then invert the mask (i.e., turn it inside out) so that any changes I make will adjust the background only and leave the stained glass alone.
On the hue / saturation layer, click the white box (see where the down arrow is pointing). Another box will open up to the left, which I’ve put a big circle around.
To the far left are two boxes that should be black and white. When I hover the mouse over them, they are called the foreground and background color. Make sure the black is on top as shown here. If it isn’t, click the tiny double arrow (shown with the tiny circle around it) to reverse the boxes. If the black box isn’t on top, this won’t work right. If my boxes have different colors in them, I click the itty bitty boxes next to the tiny double arrow. That will restore the default colors of black and white. I will have to click the double arrow to put the black box back on top.
Yes, itty bitty is a technical term, although I don’t think Adobe has it copyrighted :)
Now it’s time to brush in a mask and cover up the background.