You see everything directly above, below and to the sides of the camera as well as everything in front of the camera. I positioned the camera directly above the windshield frame on our '92 MasterCraft ProStar 190 ski boat and instructed my brother to drive us into the sunset. You are looking at everything in front of the plane that runs across the front of the lens. Here is a full circular fisheye sample photo. Small amount of the image circle being cropped at the corners (where diagonal AOV is measured) at 15mm with an infinity focus distance. This means that the diagonal angle of view remains similar through most of the FLR with only a Here is why: the Canon EF 8-15mm f/4L USM Fisheye Lens, on a full frame format DSLR body, is a 'circular fisheye' at 8mm and a 'full-frame fisheye' at 14-15mm. Not by zooming through the entire focal length range (FLR). This range seems very small for a lens with a nearly 2x zoom range - and provides a clue about the 8-15's uniqueness.Īdding to the unusualness is that this full frame DSLR AOV range is achieved via zooming between approximately 14mm and 15mm. The 8-15's AOV spec, for full frame sensor cameras, is 180º - 175º 30' respectively. Canon Announces New Firmware for EOS R5 C, EOS C70 and EOS C500 Mark II/EOS C300 Mark III CamerasĪs you may have guessed from its name, the 8-15 Fisheye is all about angle of view (AOV).Today Only: Robus RCTT-200 Carbon Fiber Tabletop Tripod with Ball Head – Only $79.95 (Save $60.00).

Should I Get the Canon EOS R6 Mark II or the EOS R8?.Save 20 or 41% on Select Jackery Outdoor Generators and Solar Panels at Amazon.Act Fast: The Awesome and Elusive Canon RF 135mm F1.8 L IS USM Lens is In Stock at Canon USA and Wex.Topaz Labs Photo AI On Sale – Save $40.00.Just Posted: Sigma 17mm F4 DG DN Contemporary Lens Review.cv::fisheye::undistortImage(input_frame,output_frame,cameraMatrix,distortionCoeffs, E, cv::Size(input_ls,input_frame. When I dig into about using these 2 function combination( initUndistortRectifyMap and remap) instead of using undistortImage, I have found this post which answered. When I read the documentation, I have seen that:įisheye::initUndistortRectifyMap (with unity R ) and remap (with I couldn't exactly find what the real problem is in your code. In case you want to try it yourself here is the original fisheye image:

As you can see in the below code, I'm using cv::fisheye::undistortImage. I obtained the camera matrix and the distortion coefficients from the internal memory of the camera.

I am trying to undistort a fisheye image using OpenCV.

Fisheye image