How the heck do you do color correction for pictures taken at night?
While coming back from a cruise up to Lake Piru this evening (I went to drive a new road which turned out to be dirt, so I passed) I eventually caught a pack of slow folks near the top of Grimes Canyon leading me to stop.
I had the camera and a tiny tripod I keep in the camera case, the full moon was rising and I figured I'd give it a shot. I setup the tripod on the trunk and took about a dozen shots. It worked! (now I need to go back and get some tail lights, I caught just a whiff) Using various exposure times between 1.2 and 4 seconds and f-stops between 2.8 and 5.0 I caught a lot of shots that look a lot like day light. Except they're really blueish purple, like this:
That's the window of my car on the bottom right. I'm sure there's some tinting but it's definitely not normally blue. And just to prove that I can't get things right even with light, here's a shot of Lake Piru taken just above the dam about 35 minutes earlier.
I hate image manipulation software, it makes me feel so stupid.
Posted by Dave at July 8, 2006 11:42 PMColor correction is always the same. In Photoshop you go to the menu -- layer -- add an adjustment layer -- curves. In curves you select a grey point with the middle dropper, it is grey. This is looking for 18% grey (which is what neutral is for a camera). You find a point which is close by knowing what its real color was. The white of an eye in not quite direct sunlight is a middle grey. Certain shades of blue will also help you.
Posted by: Nathaniel on July 29, 2006 09:20 AM commLink