Thursday, June 12, 2008

Digital Techniques For Increasing DOF

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
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 than any of the individual source images. Available programs for multi-shot DOF enhancement include Syncroscopy AutoMontage, PhotoAcute Studio, Helicon Focus and CombineZM.

Wavefront Coding
Wavefront coding is a method that convolves rays in such a way to provide an image where fields are in focus simultaneously with all planes out of focus by a constant amount.

Plenoptic Cameras
A plenoptic camera uses a microlens array to capture 4D light field information about a scene.

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