This is probably the least meaningful lens development in the past week, but it will assuredly be the most noted across the ages. People love magnetic mechanisms. Sigma’s new cheap-and-cheerful line of Sony E-mount lenses is to sport magnetic caps (in Japanese).

Sigma’s previous lens caps for their high-end Art series have been the only thing about those lenses that appeared to me made cheaply. The early Art lenses employed a cheap plastic, and used friction locking mechanisms that wore poorly. More recent Art releases featured rubberized materials and locking detents.

Taking lens caps to a new level, it can’t be far off that a third party makes a metallic shirt pocket insert, allowing a fast-moving photographer to swipe the cap off and swipe it onto the shirt pocket without looking.