![]() ![]() The most typical situation is photographing a small (cm-sized) specimen (e.g. distance between the front of the object and the back when viewed from the camera. You may need to focus stack when you are trying to take a photo of something with a lot of relief, i.e. Aperture size: The smaller the aperture size (greater f number) the greater the depth of field.įor more information look at the Wikipedia article on Depth of Field When do you need to focus stack?.Camera to subject distance: the closer you are to a subject the narrower the depth of field.Focal length: The Macro photography setup in the Graphics Lab is a 50mm prime lens so we can ignore the effects of changing focal length.For DSLRs the primary factors are lens focal length, subject distance and Aperture size (f number). Most compact cameras have a far greater DOF than DSLRs. There are several factors that affect Depth of Field (DOF). For example Zerene Stacker took 72s to stack 11 images and photoshop took 125s, the difference in stacking speed is even more pronounced when more images are used.įocus stacking images using macro or stereomicro photography equipment and Zerene stackerīackground information What is focus stacking?įocus stacking is the process of stacking (combining) multiple images with different levels in focus into a single image that is “in focus”. I have made a new post with instructions using Zerene stacker to stack the images rather than photoshop because it is faster, easier and produces better results in all cases that I have seen. Concepts are applicable to other equipment and versions of Photoshop. This article has been specifically written for using the macro-photography setup in the Graphics Lab in the geology department and Adobe Photoshop CS5. ![]()
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