The Canon TS-E 17mm lens, introduced in 2009, has proven itself to be a magnificent wide-angle optic, with stellar corner-to-corner performance. However, from the perspective of a landscape photographer, it has one shortcoming: a protruding bulbous front element that does not admit filters.
A German photographer recently came up with a solution that uses the lens’ cap itself to put together a filter adapter ring to match a Lee filter holder. The idea was immediately embraced by American photographers who cobbled together their own jigs and reported their fabrication details on the Fred Miranda Forums.
Since working with my hands is not my strong suit, I decided to outsource the job. A friend recommended S.K. Grimes, a machine shop in Rhode Island that specializes in photography-related work. The turnaround time was 2 months and the cost $85 plus shipping. The quality of the work is first-rate.