The Horseman Convertible 842 camera was made in the early 1970s. This Medium Format camera with a 62mm wide angle lens was a novelty. It equals a 32mm or even a 25mm wide angle in the 135 format! The camera remains a rarity to this day, sometimes these cameras surface on eBay or on camera shows. Judging from serial numbers on the lenses, there were less than 5,000 cameras made.

Mirrorless camera adapters article

With the modern day new mirrorless cameras like the Fuji X-T2 and the Sony A7-II, there's great fun in finding less-than-usual lenses in abandoned lens mounts, and adapt them to fit the camera of your choice.

There's a lot of adapters available for peanut prices if you want to try something exotic and this article lists a lot of options to get your lens and camera connected.

Don't forget to get a bunch of macro rings to add between camera and lens if that is your thing!

In this article I try to compile a comprehensive guide to adapting lenses to various types and brands of cameras and lens mounts. As you will have found out by now (or you wouldn't be reading this article), most camera manufacturers used their own, proprietary lens mounts to make sure that once a customer (that means you) bought into a system, they'd be hooked forever.

The Ricoh GXR is a remarkable camera. It is built by a unique concept, where changing a lens means you also change the sensor.

Ricoh Launched the GXR in november 2009. It was designed to be a Compact System Camera (CSC), which means it is a small camera and it featured exchangeable lenses. But Ricoh decided to not just manufacture exchangeable lenses, but incorporate lens and sensor in a single unit, called a 'lensor'. The idea behind this was simple: different lenses could benefit from different sensor sizes.

The A12 GXR Mount lensor isn't quite a lensor, in that it has no lens incorporated! Instead it has a Leica M mount in the unit that also houses an APS-C 12MP sensor.