Lenstool reference implementation for Lensfun version 0.3.4
Copyright (C) 2007 Andrew Zabolotny

For distribution rules and conditions of use see the file
COPYING which is part of the distribution.

Command-line options:

  -d    --distortion Apply lens distortion
  -g#   --geometry=# Convert image geometry to given (one of:
                     rectilinear,fisheye,panoramic,equirectangular,
                     orthographic, stereographic, equisolid, thoby)
  -t    --tca        Apply lens chromatic aberrations
  -v    --vignetting Apply lens vignetting
  -a    --all        Apply all possible corrections (tca, vign, dist)
  -i    --inverse    Inverse correction of the image (e.g. simulate
                     lens distortions instead of correcting them)

  -C#   --camera=#   Camera name
  -c#   --crop=#     Set camera crop factor in case the camera is not given

  -L#   --lens=#     Lens name to search for in the database
  -F#   --focal=#    Set focal length at which image has been taken
  -A#   --aperture=# Set aperture at which image has been taken
  -D#   --distance=# Set subject distance at which image has been taken

  -s#   --scale=#    Apply additional scale on the image
  -I#   --interpol=# Choose interpolation algorithm (n[earest], b[ilinear], l[anczos])

  -o#   --output=#   Set file name for output image
        --verbose    Verbose output
        --version    Display program version and exit
  -h    --help       Display this help text