Focus stacking can also be useful in landscape photography.įocus stacking offers flexibility: since it is a computational technique, images with several different depths of field can be generated in post-processing and compared for best artistic merit or scientific clarity. Focus stacking can be used in any situation where individual images have a very shallow depth of field macro photography and optical microscopy are two typical examples. Black is no contribution white is full.įocus stacking (also known as focal plane merging and z-stacking or focus blending) is a digital image processing technique which combines multiple images taken at different focus distances to give a resulting image with a greater depth of field (DOF) than any of the individual source images. Three source images at different focus distances (top left) are combined with masks (top right) to obtain the contributions of their respective images to the final focus stacked image (bottom). This example is of a diatom microfossil in diatomaceous earth. Focus stacking (for extended depth of field) in bright field light microscopy. First two images illustrate typical DOF of a single image at f/10 while the third image is the composite of six images. Series of images demonstrating a six-image focus bracket of a Tachinid fly. ( June 2019) ( Learn how and when to remove this template message) Unreliable citations may be challenged or deleted. Please help this article by looking for better, more reliable sources. Some of this article's listed sources may not be reliable.
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