The TS-E 17mm f/4L Tilt-Shift Lens from Canon
is an ultra wide-angle manual focus lens for EF mount cameras with a
104º diagonal angle of view on full frame cameras. It is the widest
tilt-shift lens in the Canon lineup and provides tilt-shift functions to
control perspective and correct convergence of lines within your
frame. It is especially useful in architecture, landscape, and product
photography. The optical tilt mechanisms enable precise control of depth
of field along with perspective control.
The tilt-shift function
on the 17mm f/4 lens allows adjustment of the focal plane by an angle of
+/-6.5º and enables parallel shift of the optical axis by +/-12mm. Both
tilt and shift can be engaged singly and in combination. The tilt-shift
rotation mechanism locks at right angle and at parallel and clicks at
45º and the lens mount itself can rotate left or right by 90º with
click-stop adjustment each 30º.
Being a Canon L-series lens, its
optical design and physical structure are optimal. Aspherical and
ultra-low dispersion lens elements suppress aberrations and
provide sharp delineation. Subwavelength Structure Coating (SWC) reduces
ghosting and flare and truly circular diaphragm results in pleasing
out-of-focus backgrounds. The focus ring on the lens provides precise
manual focus action and the improved tilt and shift knobs are sturdy
and smoothly control the mechanisms.