Barnack Software

  • Thread starter Thread starter whiteflyer
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whiteflyer

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Don't know if anyone will find this little bit of software useful , but here is the link anyway http://www.stegmann.dk/mikkel/barnack/


Barnack is a program for learning about the intrinsic camera parameters and their effect on the hyperfocal distance, depth of field, field of view, et cetera.

The hyperfocal distance (hfd) is the focus distance that maximises the depth of field; range: [hfd/2;infinity]. E.g. if the hyperfocal distance is 5 m, then everything from 2.5 m to infinity will be in focus.

barnack_screenshot.png


The recomposition focus circle (rfc) is the area that a target can be moved within and remain in focus, i.e. using the central focus point. This assumes that the recomposition is carried out as a rotation around the entrance pupil of the lens, that the autofocus is accurate, and that the object focus field is flat. Notice that these conditions may not be satisfied.
The red and green circles show the bounds of the rfc for an autofocus tolerance of 1 depth of field (dof).
Click to expand...
 
Just been playing with this. Interesting to see the tiny fraction of millimetres DOF you get with macro type settings and how it changes with aperture - from very little to not much :)
 
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