Canon is a Japanese multinational corporation and they are specialists in optics and imaging products. Their headquarters is in Ota, Tokyo, Japan. They produce products such as cameras, steppers, photocopiers and computer printers. Canon introduced a tilt shift ultra wide angle prime lens called Canon TS-E 17mm f/4 L Lens.
The lens gets constructed with a combination of 18 elements in 12 groups. The size of the lens is 88.9 x 106.7 mm (3.5 x 4.20 inches) (diameter x length). The focal length of this lens is 17 mm. The minimum and maximum aperture of the lens is f/22 and f/4 respectively. It includes eight diaphragm blades in it. The closest focusing distance of the lens is 0.28 m. The maximum magnification ratio of the lens is 0.14x. The diagonal angle of view offered by the lens is 104 degrees. This TS-E lens can cover full frame over the focus range.
TS-E 17mm f/4 L lens offers four degrees of freedom. The filter size of the lens is 77 mm. It allows 6.5 degrees of tilt with respect to film or sensor plane. It permits 12 mm shift to the image area and the lens can be moved and rotated at about 90 degree of the lens axis. Without moving the camera back, the shifting allows to adjust the position of the subject in the image area. The shift mechanism and tilt mechanism allows only one shift and tilt about one axis. This tilt and shift lens is compatible with all type of Canon EOS cameras.
The sub wave length structure offers very good capturing and focusing on the subjects. The lens bears super spectra coating and so it avoids the ghosting and flare brilliantly. This lens uses aspherical and UD lens elements which minimize the chromatic aberration (CA) effectively. It includes a high precision lens element and so the distortion is very low. TS-E 17mm f/4 L lens incorporates a floating internal focus mechanism which delivers high quality images throughout the entire focus range.
The supplied accessories comes with this lens are front cap, rear cap and soft case LP1219. This Canon TS-E 17mm f/4 L lens is best suitable for architecture and landscape photography. The lens weighs 820 grams (28.92 ounces). The circular aperture is found in this lens which produces creative shooting and removes the blurred highlights. It provides high resolution till the edge of the images covered. Canon TS-E 17mm f/4 L Lens is priced around 2500 US Dollars.
Tue, 27 Apr 2010 11:57:30 +0000
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