A tiny aperture is great for adding twinkle to Christmas lights but it also means you need a lot more light to take those photos so the shutter has to stay open longer. This isn’t difficult for some shots but when you have a child, friend, or pet in front of the lights it can be very difficult to get them to hold perfectly still long enough to capture the scene.
This is why we turn to post processing. Adding the twinkle to Christmas lights isn’t hard and it adds a lot of visual impact to the photos.
Get the step by step instructions for creating Christmas light stars in this tutorial I wrote for About.com Graphics Software. (Click HERE or on the photo to go to the instructions. The tutorial also includes a link to free star brushes.)