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functionenddof(d, f, cf, a, c=0.00002)

Far limit of DOF If the lens is sharp to infinity the result will be negative.

functionstartdof(d, f, cf, a, c=0.00002)

Near limit of DOF

functiondof(d:real vector, f:real vector, cf:real vector, a:real vector, c:real vector=0.00002, infinity=NAN)

DOF interval d : focussed distance f : focal length of lense (relative to film) cf : crop factor (f/cf then is the true focal length) a : aperture (F stop) c : acceptable blur radius (0.00002 is the industry standard) infinity : Use for infinity If the lens is sharp to infinity the result will be negative. Returns a 1x2 vector containing the bounds of the interval. If one of the inputs is a vector the result is a nx2 vector of interval bounds. >dof(4m,18mm,1.5,[2,4,8,16]) 2.30081 15.2975 1.61483 NAN 1.01161 NAN 0.579026 NAN See:

enddof (Depth of Field of an Ideal Lens),

startdof (Depth of Field of an Ideal Lens),

hyperfocal (Depth of Field of an Ideal Lens),

coc (Depth of Field of an Ideal Lens)

functionhyperfocal(f, cf, a, c=0.00002)

Hyperfocal distance f : focal length of lense (relative to film) cf : crop factor (f/cf then is the true focal length) a : aperture (F stop) The lense will be acceptably sharp from the hyperfocal distance divided by 2 to infinity. >hyperfocal(18mm,1.5,[2,3,8,16]) [5.412, 3.612, 1.362, 0.687] See:

dof (Depth of Field of an Ideal Lens)

functioncoc(od, d, f, cf, a)

Circle of Confusion od : object distance d : focussed distance f : focal length of lense (relative to film) cf : crop factor (f/cf then is the true focal length) a : aperture (F stop) See:

dof (Depth of Field of an Ideal Lens),

hyperfocal (Depth of Field of an Ideal Lens)