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Recently, I have taken a liking to focus stacking. The focus stacking tecnique is a method where we need to take multiple photographs of one object, with each frame focusing on a different portion of the object. Then, these frames are blended in software, to create one frame, where the complete object is in focus.

How different is this from using a small aperture? With focus stacking, you can get close to the object and keep a wide aperture and still achieve the end result of having the complete object in focus.

While shooting such sequences, it is important to know where the sequence starts and where it ends. While reading up on focus stacking, I came across the method of using one finger to indicate start of sequence and two fingers to indicate end of sequence. I can say with experience that the method is very helpful.