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#23608

Another attempt with macro lenses.  This would seem to show equal DOF, from 150 and 100 mm lenses.  I put a blob mid ruler and used it to gauge image size against a focusing square in the viewfinder.  It still took some playing around to get the shape exactly the same size in both shots.

2015-01-04_18-59-34_322C2412

Base view is the 150 mm lens, the 100 mm image was shifted right and masked to show.

I don’t think I mentioned it here but as you focus lenses the focal length shifts a little so the actual focal lengths are probably not exactly 150 and 100 mm, they should be close though.