A pinhole camera renders a “perfect” rectilinear projection. Most lenses are “rectilinear”, which means “straight line”. There is a need to better handle the distortions these lenses produce. Modern advances in optics have given photographers better ultra wide angle lenses, such as the modern fisheye lens. These images can be easily projected onto a flat surface. In map making, a small part of the globe can be easily flattened on a flat surface. In photography, there is still the sphere around the camera, the real world, and still the flat surface of a print or computer screen that must accommodate that sphere with perceived accuracy.
There is no “right” way to map a sphere to a plane. The cartographer must map the sphere to a flat paper. Ideally this is represented onto the surface of a globe. Although the surface of the earth is two dimensional, those two dimensions bend into a three dimensional sphere. The mapping process has an exact analogy to cartography. The Fisheye-Hemi Plug-in produces an aesthetically pleasing image from the fisheye lens! Fisheye-Hemi: It's for people. Last, but equally important, Fisheye-Hemi straightens vertical lines. Fisheye-Hemi preserves all of this framing what was seen on the top and bottom of the image in the viewfinder is included in the processed image. Fisheye-Hemi preserves this detail by using advanced mathematics to preserve all of the content of the original fisheye image.Īdditionally, a rectilinear projection discards much of the framing of the image as composed by the photographer through fisheye lens.
A rectilinear view will shrink the center of the image which has the most detail. Fisheye-Hemi uses almost all of the pixel data in that view. Much of the data is discarded in a rectilinear view. Photographers purchase a lens to capture up to 180 degrees. A rectilinear mapping will discard approximately one third of the pixels and crop to the center along the horizontal axis. The faces and bodies must appear as normal as possible given it is a fisheye lens! The Fisheye-Hemi Plug-In preserves the people.Īnother important feature of Fisheye-Hemi is the clarity of the mapping. The most important requirement for Fisheye-Hemi is to not distort people, no matter where they are in the image.
#Camera lens distortion hands plus#
It has improved resolution of the image plus it displays the intended composition and framing better than other un-warping programs. Although the image is similar to what is seen by the eye, printed, the images appear distorted.įisheye-Hemi offers an aesthetically pleasing and natural view of the image using a unique mapping technology! Fisheye-Hemi provides a more normal view of people by not distorting their faces and bodies, and straightens vertical lines. These methods have many drawbacks, such as distortion of people near the perimeter and loss of resolution and data. Until now, the primary option available to the photographer was to render these fisheye images using rectilinear mapping techniques.
Fisheye-Hemi is a plug-in filter for Photoshop, Photoshop plug-in compatible applications, Lightroom and Apple Aperture which provides correction for hemispheric fisheye lens distortion.įisheye Hemispheric lenses in the hands of a photographer provide an expanded view of the world across approximately a 180 degree diagonal field.
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