Gallery of Widefield Images. The images displayed here are those taken with a range of Canon EOS lens from 20mm to 200mm. Cameras used include a Canon EOS 550D, a Canon 60Da and a QSI 683 cooled CCD. The field of view of these photos ranges from 6.5 degrees for the 200mm EF prime lens to approximately 58 degrees for the 20mm F2.8 lens.