11 element / 9 group design
Manual focus
Closest Focusing Distance 0.3m / 1 ft.
Filter Size: 72mm
Max. Diameter: 78.0mm
Max Length: 86.7mm
Weight: 570g / 1.3 lbs
New Street Price: $1100-1400
Used Value: $700-900

Canon 24mm f3.5 TS-E
Adapts with Av metering and infinity focus to Nikon, Olympus
Movements
8° tilt plus 11mm shift
Image Circle
58.6mm 
35mm equivalent
field of view
16mm* (full frame sensor)
22mm (1.6x sensor)
Stitched file sizes

Canon
1Ds:

8200x3000 pixels (landscape) 22MP
6000x5000 pixels (portrait) 24MP

Canon
1Ds2:
10,400x4000 pixels (landscape) 28MP
8000x5000 pixels (portrait) 32MP
Canon
20D:
8200x2500 pixels (landscape) 20MP
6000x3000 pixels (portrait) 22MP
Nikon
D50:
7000x2000 pixels (landscape) 18MP
4000x3000 pixels (portrait) 19MP
Manufacturer's MTF
Photodo Test
Photodo rating: 3.3
Tests, opinions and further reading

Luminous Landscape
Jack Flesher article
Photography Review
Fred Miranda
Henning Wulff
photo.net Forum Thread
Outback Photo Forum Thread 1
Outback Photo Forum Thread 2
Rob Galbraith Forum Thread 1

StitchPix verdict

Not the best 24mm, but the only one that tilts. Expect nasty parallax correction in any shift lens this wide when stitching.

Superbly made L-class lens with fluorite elements and unique in offering shift and tilt in the same axis (with a little factory modification), this versatile lens has a mixed press with regard to optical quality: some love it, others are disappointed. Most samples seem to perform better than its woeful photodo rating suggests, but there's little doubt that it doesn't perform well at the edge of its image circle. Though direct comparisons are rare, the received wisdom is that the Olympus 24mm PC (if you can find one) justifies its extra cost. As with all 35mm tilt lenses, you may find that 8° just isn't enough.

* Chromatic aberration, vignetting and resolution loss make movements +8mm shift unviable for critical work. This limits the practical FOV to nearer 18mm on full frame.