Canon have an impressive range of tilt and shift lenses for their full frame cameras, offering focal lengths of 17mm, 24mm , 45mm , 50mm and 135mm . Joining the line up is this new Canon TS-E 90mm f/2.8L Macro lens, focusing continuously down to a 1:2 magnification, a very useful half life size.

This tilt-shift lens is a huge improvement over the previous model that I have been using for the past 7 years. It's sharper, has more contrast, and focuses much closer. I use this lens for 90% of my jewelry shots. Great product! And, the memory card was an added bonus.

I used the older version of the 90mm t-s for years. The wear of daily use made it just about unusable, despite Canon's repair of the gearing. I haven't yet examined the files to check for optical improvement, but am extremely pleased by the greater resolution of the controls.

Shift lenses allow you to compensate perspective distortions (converging verticals) by shifting the optical path off its horizontal axis. By doing so the projected image (rectangle) on the film/sensor plane gets distorted to a trapezoid negating the original effect.