How To Use Photoshop For Focus Stacking Multiple Images
One problem photographers face when focusing on objects extremely close to the camera's lens is the depth of field can become quite shallow. Even if you shoot at f22, your lens simply can't keep everything from 1 foot to infinity sharp and in focus. Gavin Hoey has released an incredibly helpful tutorial on how you can use "image stacking" in photoshop to create images that have much more depth of field than normal. If you are a landscape photographer or shoot tricky subjects like interiors or macro still life, stacking images for maximum sharpness can be a lifesaver.