How DxO Labs Tests Hot Cameras Like Canon's Latest SLR
Canon's 5D Mark III is perched on a tripod in front of a queasiness-inducing chessboard pattern used to test its image sensor's ability to capture sharp images. (Credit: Stephen Shankland/CNET) BOULOGNE BILLANCOURT, France — So you think you're a camera expert? Well, when was the last time you evaluated a camera by spending days analyzing hundreds of test photos? That's what DxO Labs does, over … Read News

Helicon Filter – Wikipedia, The Free Encyclopedia
This feature is especially useful for photographs taken with a wide-angle lens, as this often produces distorted images. An example of barrel distortion compensation of a 15 mm fisheye lens using the Distortions filter. … Read Article

Fisheye Lens Adapter On Medium Format Bronica Classic Cameras
The Bronica normal lens 67mm (or series VIII) filter mount. This is not a rectilinear wide angle lens, so expect to see considerable fisheye distortion effects. The edges of the 6×6 format are cut off in the corners, but only slightly (circa 3/8ths of an inch). The fisheye barrel-distortion … View Full Source

Is The Olloclip Compatible With The IPhone 4S?
Are there any limits to using a Fisheye? Updated! I've noticed an offset/vignetting in the image when using the Fisheye, is there a fix for that? Updated! Wide Angle Lens: Barrel Distortion … Document Viewer

Rectilinear Wide-angle Lenses And Fish-Eye (All Sky) Lenses
With such lenses barrel distortion, where vertical and horizontal lines tend to bow out away from the center of the image, is common; and corrections Reference List 1) Kumler, J and Bauer, M. Fisheye lens designs and their relative performance. … Read Here

AFDX Fisheye-Nikkor ED 10.5mm
A) Using a fisheye lens requires much more thought about picture composition than with a conventional lens. This lens not only produces extreme barrel distortion but also exaggerates the relative size of objects to conform to its format: objects near the center appear larger than those at the edges and … Get Doc

Lens Corrector PRO Press Media
Common Lens Distortion types: Undistorted (Planar) Map Pincushion Distortion Barrel Distortion Fisheye Distortion Lens Corrector PRO is a commercial tool. … Get Document

.8X Zoom-Thru Wide Angle Converter &Fisheye Adapter
The Super Fisheye produces an extraordinary degree of barrel distortion for a magnification factor of approximately .55X. simply attach to the front of your zoom lens..8X Zoom Thru Wide Angle Converter Wide Angle Adapter Set Super Fisheye Adapter Zoom lens at … Document Retrieval

Zoom lens – Wikipedia, The Free Encyclopedia
Although modern design methods have been continually reducing this problem, barrel distortion of greater than one percent is common in these large-ratio lenses. … Read Article

Shooting The Tokina 10-17mm With Alexander Mustard
(Centre) When zoomed in to 17mm the Tokina hides much of its fisheye barrel distortion as you can see in the jetty at the (Above) The Tokina is an excellent wreck lens. At 10mm it captures vistas and zoomed in, hiding some of the barrel distortion it is well suited to capturing interior details. … Get Doc

Panoramic Lens Applications Revisited
Figure 1 A-D: Development of fisheye lens 2 At that time a severe drawback was encountered when the fisheye was facing up or down, because in these positions the subject of interest might have appeared at the edge (large angle) of the field where the barrel distortion is very large. … Retrieve Full Source

Design Issues Of A Hy Per-field fisheye lens
The barrel distortion due to the f- mapping helps to offset the illumination fall-off by focusing the outer fields in closer to the center of the image than would be found in a normal f tan lens. The illumination is also controlled in a fisheye lens through the rotation and walking of the … Fetch Document

Tamron 28-75mm Lens Review – A Review Of The Tamron 28-75mm Lens
There is some barrel distortion between 28mm and 35mm, but this isn't unusual in a lens of this class. Tamron 10-24mm Lens Review – A Review of the Tamron 10-24mm Lens; Lens Review – Review of Nikkor 10.5mm f2.8 ED Fisheye Lens … Read Article

The World’s Most Complete Line Of Professional Add-on …
Add the Fisheye to the front of your lens for a wider angle of view and a remarkable degree of barrel distortion with no vignetting. It exaggerates depth, pulling nearby objects closer … Read Document

Showreel Test Canon Ef To XL Adaptor With 15mm fisheye – YouTube
What it does give is approx 7.5x extender, so no a 15mm fisheye becomes a 113mm lens (35mm equivalent) but with great macro. I already have a 15mm 2.8 fish eye lens. I had no idea there would be no barrel distortion. … View Video

Fisheye lens Designs And Their Relative Performance James …
The power of the fisheye lens in wide angle, panoramic and immersive imaging is that the uncorrected barrel distortion is used to distribute the light flux over increasingly smaller areas towards the edges of the field of view. In this way, the fisheye lens is able to violate the cos 4 θ illumination … Get Document

A Flexible Architecture For Fisheye Correction In Automotive …
Also known as "barrel distortion," the apparent effect is that of an image that has been mapped around a sphere. is related to θ and to the focal length f of the lens for different mapping functions (2) : ■ Perspective projection (normal, non-fisheye lens): R … Access Full Source

Fisheye-Hemi Plug-In Review
Fisheye-Hemi 3 (Cropped) works best with a lens and camera combination that covers less than 180 degrees diagonally, such as a Nikon D80 with a 16mm In the example below, I deliberately added some barrel distortion to the image (Filter>Distort>lens correction) – before- applying Hemi-3 to it. … Fetch Doc

Enhanced Optical Design By Distortion Control
Type, if the barrel distortion is increased instead of being corrected; the result is a so-called Fish-eye lens. However, if we control the barrel distortion instead of a I C. Figure 10: Schematic comparison with a fisheye lens and the Panomorph lens. … Doc Retrieval