Leica has spent generations making cameras and lenses for everyone from photojournalists to street photographers, but one of the stranger chapters in the German brand’s history involved covert U.S. Navy reconnaissance. Now, Leica is bringing that story back with the new Leica Summicron-M 66 f/2, a modern reinterpretation of an ultra-rare military lens developed during the late 1960’s.

The original Elcan 66mm f/2 was designed by optical engineer Dr. Walter Mandler at Ernst Leitz Canada specifically for the U.S. Navy. Only around 200 examples were produced, making it one of the rarest lenses associated with the Leica M-System.

And this wasn’t simply military equipment in name only. According to the release announcement, the original camera-and-lens sets came with instructions explaining how to destroy the gear if the photographer was captured. That Cold War history is now being repackaged into a highly collectible lens that costs $10,900.

The Leica Summicron-M 66 f/2 Started as a U.S. Navy Spy Lens

The Elcan 66mm f/2 came from a very specific request. The Naval Intelligence Service wanted a compact lens that could look relatively ordinary while delivering exceptional resolution for covert reconnaissance photography.

Mandler’s solution was the unusual 66mm focal length. According to a press release the number wasn’t arbitrary; it represented a precise compromise between maximum resolution, fine contrast and keeping the lens compact enough for discreet use.

The Elcan was also frequently paired with the Leica KE-7A, a military version of the Leica M4. Together, the camera and lens created a small photography system capable of recording the kind of fine detail necessary for intelligence work.

Historical accounts cited by Leica suggest similar equipment also found its way to Western allied partners during the Cold War. Then there was the instruction manual. The brand says the original sets included directions for destroying both the camera and lens in the event of capture, an unusual detail that says plenty about the environments these cameras were built to operate in.

Leica Kept the Original Lens’ Military Quirks

The new Summicron-M 66 f/2 isn’t simply a standard lens wearing some vintage engravings. Its optical design is based on the original Elcan but has been updated to meet modern standards. Also preserved are some of the military lens’ unusual mechanical characteristics, including an aperture ring that rotates in the opposite direction from conventional Leica M lenses.

The distance scale arrangement follows the military configuration as well, while the exterior markings were redesigned to closely reference the original. One of the smallest details is also one of the more interesting. A tiny “60” engraved on the side of the lens doesn’t mean 60mm. It follows an old precision-lens convention and represents the individually measured focal length of exactly 66.0mm.

Its 66mm focal length remains unusual even today, positioning it between a traditional 50mm standard lens and longer portrait lenses. The brand says that combination provides a natural perspective with subtle compression. At its maximum f/2 aperture, the lens is designed to deliver high contrast with soft bokeh. Stopping it down emphasizes the resolution and fine-detail reproduction that made the original Elcan valuable for reconnaissance work in the first place.

Only 660 Leica Summicron-M 66 Lenses Will Be Made

The brand is limiting production of the Summicron-M 66 f/2 to just 660 examples worldwide, an obvious nod to its distinctive focal length. Each lens receives an individual serial number on the front ring alongside technical markings inspired by the military original. It measures roughly 60mm in length, weighs 456 grams and uses a Leica M bayonet with 6-bit encoding and an E49 filter thread.

Collectors will need to pay accordingly. The Leica Summicron-M 66 f/2 is priced at $10,900 in the United States and is available through Leica Stores, online shop and authorized dealers. Leica’s U.S. store is currently restricting purchases to one unit per customer.

One particularly desirable example won’t be sold through the normal channels. Serial No. 001 is being reserved for the Leitz Photographica Auction in Wetzlar this November. For most photographers, there are considerably less expensive ways to put excellent glass on a M camera. But judging the Summicron-M 66 f/2 strictly on specifications misses much of the point.

This is effectively a functional collectible built around one of the most unusual stories in Leica’s history. By preserving the 66mm focal length, reversed aperture operation and military-inspired details of an optic once reserved for covert reconnaissance, Leica has made a piece of its Cold War past available to civilians for the first time.

No security clearance required.

$10,900.00