photo:canontse45mm
Canon TS-E 45mm f/2.8 tilt shift lens
introduction
2011 prices suggest $A1999 new online
minimum focus 40cm giving 0.16x magnification
10 elements in 9 groups floating optical system, and rear focusing mechanism
8 blade diaphragm
72mm filter thread
manual focus
up to 8deg tilt, 11mm shift and 90deg rotation
Super Spectra coatings for accurate colour balance and enhanced contrast
645g, 90mm long by 81mm diameter
introduced April 1991
many reverse the factory default lens tilt-shift orientation otherwise the tilt tends to counteract the shift but this causes some vignetting on full frame
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versatility of this lens
portraiture
product photography
landscape photography
architecture
panorama stitching
tilt calculations
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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)
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
at closest focus of 0.4m, you can change the plane of focus to max. 54 deg from horizon (or 36deg from perpendicular to camera), thus if you angle you camera down on your flat subject at an angle of 36deg with an 8deg lens tilt, your flat subject should be in focus (without tilt, your camera sensor has to be at parallel to the flat surface)
tilt amount (degrees) | untilted focus distance (m) | angle of plane of sharpest focus (degrees) | J point |
8 degrees | 0.4m | 53.6 deg | 0.3m |
8 degrees | 1m | 75.8 deg | 0.3m |
8 degrees | 1.5m | 81.7 deg | 0.3m |
8 degrees | 2m | 84.8 deg | 0.3m |
8 degrees | 5m | 90 deg | 0.3m |
6 degrees | 0.4m | 44.3 deg | 0.4m |
6 degrees | 1m | 69.3 deg | 0.4m |
6 degrees | 1.5m | 76.8 deg | 0.4m |
6 degrees | 2m | 80.8 deg | 0.4m |
6 degrees | 5m | 88.1 deg | 0.4m |
6 degrees | 10m | 90 deg | 0.4m |
4 degrees | 0.4m | 32.4 deg | 0.6m |
4 degrees | 1m | 58.6 deg | 0.6m |
4 degrees | 1.5m | 68.4 deg | 0.6m |
4 degrees | 2m | 74 deg | 0.6m |
4 degrees | 5m | 84.6 deg | 0.6m |
4 degrees | 10m | 88.3 deg | 0.6m |
4 degrees | 20m | 90.2 deg | 0.6m |
2 degrees | 0.4m | 17.3 deg | 1.3m |
2 degrees | 1m | 38.2 deg | 1.3m |
2 degrees | 1.5m | 49.9 deg | 1.3m |
2 degrees | 2m | 57.9 deg | 1.3m |
2 degrees | 5m | 76.5 deg | 1.3m |
2 degrees | 10m | 83.6 deg | 1.3m |
2 degrees | 20m | 87.3 deg | 1.3m |
2 degrees | 60m | 90 deg | 1.3m |
examples
photo/canontse45mm.txt · Last modified: 2017/08/29 14:56 by gary1