#' A circular fisheye photography image of a chestnut (Castanea sativa) canopy
#' @format A in-built JPG obtained using a Nikon Coolpix4500 equipped with a FC-E8 fisheye lens converter
"circular_coolpix4500+FC-E8_chestnut.jpg"

#' A fullframe fisheye photography image of a beech (Fagus sylvatica) forest
#' @format A in-built JPG obtained using a Nikon D90 DSLR equipped with a Nikkor 10-5 fisheye lens converter
"fullframe_D90_Nikkor-10.5_beech"

#' Lens projection function
#' @format A list of available lens for correcting fisheye lens distorsion using [gapfrac_fisheye()]
"list.lenses"

#' Camera+lens parameters for circular masks
#' @format A list of available camera+lens parameters for setting a circular mask in circular fisheye images using [import_fisheye()]
"list.cameras"
