see also:

• perspective control, shift and/or tilt lenses
• Canon TS-E 90mm f/2.8 tilt shift lens
• Canon TS-E 24mm f/3.5L tilt shift lens
• Canon TS-E 45mm f/2.8 tilt shift lens
• Canon TS-E 50mm f/2.8L tilt shift macro lens
• Canon TS-E 90mm f/2.8L tilt shift macro lens
• Canon TS-E 135mm f/4L tilt shift macro lens

17mm tilt shift lens on a Panasonic GH-1 Micro Four Thirds system

• the 24mm shift lens is the traditional architectural lens for a 35mm full frame camera, but this lens is the first 17mm tilt-shift lens ever produced.

• introduced in 2009;
• +/- 6.5° Tilt and ±12mm Shift
• 18 elements in 12 groups
• Tilt and shift mechanism rotates +/-90° allowing shift in any direction
• Tilt mechanism rotates +/-90° allowing tilt in any direction relative to the shift
• SWC Sub-wavelength structure and super-spectra coatings minimise ghosting and flare
• 8 blade circular aperture
• 104deg angle of view
  • on APS-H cameras, it gives equivalent of a 22mm field of view
• close focus 0.28m; (maximum close-up magnification: 0.14x)
• filter is not possible as protruding convex lens
• can be used with 1.4x teleconverter to give 24mm field of view but camera may not display adjusted aperture reading and it adds a touch of barrel distortion
• 820g, 107mm long x 89mm wide.

• the tilt mechanism enables one to get all the scene in focus without resorting to extremely small apertures

• shift mechanism allows perspective control

• place the camera on a tripod and use the shift mechanism to take 3 separate images which can then be stitched to create a panorama
• you may want to investigate using a lens-based tripod mount to prevent the lens entrance pupil from moving when shifting
  • Rogeti TS-E Frame adapter costs $US300

• derived from http://www.cambridgeincolour.com/tutorials/tilt-shift-lenses2.htm
• J point is the distance below the camera that will be in focus (although this point will not be in the field of view of the lens)
  • J = lens focal length / sin(tilt angle)
• for landscapes, where nearly everything is in focus one usually selects a tilt and focus distance that changes the focus plane to horizontal (ie. 90deg) with the camera still aimed horizontally but placed at the J point above the ground.
  • thus determine how far you want to be from the ground (based on tripod, perspective, etc), then determine from the tables what tilt you will need and the focus distance to achieve close to 90deg focus plane.
• camera sensor size and aperture have NO effect on the angle of the focus plane BUT do alter the total angular depth of field, and thus the calculations should apply whether you use it on a full frame dSLR or a 2x crop Micro Four Thirds system

• derived from Barnack's calculator using 35mm full frame equivalence to COC of 0.03mm

• COC = 0.024mm == 3.2 pixels
• angle of view = 21mm on a full frame camera

• lowest light level handheld at ISO 3200 and 1/25th second as no IS available: -1 EV
• hyperfocal distance 3m (ie. set focus at that point and you will have most of the scene in soft but perhaps acceptable sharpness from 1.5m onwards)
• BUT you can't get the out of focus areas as sharp when used wide open, so this will be an issue for low light handheld scenes, to achieve that you will have to stop the aperture down and this means long shutter speeds, subject blurring and need for a sturdy tripod.

• Compared to Olympus 12mm f/2.0 lens and Canon 24mm f/1.4 lens

see more examples:

• PBase photo examples

• http://www.photozone.de/canon_eos_ff/485-canontse17f4ff
  • only slight barrel barrel distortion of just over 1.1% albeit based on a somewhat wavy subfrequency. This is highly impressive for a lens in this class, although does increase to 2% with 12mm shift
  • 1.3EV vignetting wide open (3.3EV at 12mm shift) reducing to 0.44EV at f/8 (1.3EV at 12mm shift)
  • centre sharpness peaks at f/5.6, edge and corner peaks at f/5.6-f/8, but overall peaks at f/8 when shifted 12mm
• http://www.ronscheffler.com/techtalk/?page_id=37
• https://luminous-landscape.com/canon-17mm-tse-review/
  • best at f/5.6-f/11
  • CA seems to be minimal to non-existent