A Technique to Increase Depth of Field of an Image
Ever notice how little is in focus when taking close-up images, even with the lens set at f/22? At the closest focus distance of a 100mm macro lens of 12 inches, the depth of field is only .33 inches at f/22 with a full-frame sensor, and only .21 inches with a cropped sensor body. Well, there’s nothing to be done about the laws of physics, but there is a technique that can be used to increase the range of focus in digital images. Focus stacking is the merging of the sharp sections of multiple image captures of the same scene. I became interested in this technique as an avenue to increase the depth of sharpness in my macro images, but it can also be useful in landscape images when circumstances require. What I most desire from this technique is the ability to have a subject sharp from front to back while maintaining a pleasing out-of-focus background. [Read more…]









