Focus stacking

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At f/11, the DOF in this image of a Wolf Spider is very limited.
Combining 8 exposures, each taken at f/11, gives good DOF.

Focus stacking 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.

Getting sufficient depth of field can be particularly challenging in macro photography. The images at right illustrate the increase in DOF that can be achieved by combining multiple exposures.

Other digital imaging techniques used to increase DOF include wavefront coding and plenoptic cameras.

[edit] Software

Focus stacking software
Name Primary author Platform License
ALE David Hilvert Linux, Windows GPL
CombineZM Alan Hadley Windows GPL
Helicon Focus Danylo Kozub Windows, Mac OS X Proprietary, 30-day trial
Extended Depth of Field
plugin for ImageJ
Alex Prudencio Multi-platform (Java) Free for use for research purposes
PhotoAcute Studio Almalence Inc Windows, Mac OS X, Linux Proprietary, time-unlimited trial
Stack Focuser
plugin for ImageJ
Michael Umorin Multi-platform (Java) GPL
Adobe Photoshop CS4 and newers Adobe Windows, MAC OS X Proprietary

[edit] See also

[edit] External links

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