Modern digital cameras are impressively small, but sometimes big is beautiful. Large format film cameras, most often designed to accept 4"x5" cut sheet film, have a certain charm. It isn't just because the big film is cool, but also because of features like very flexible tilt and shift. Features that ought to be able to work with your mirrorless camera body....
This instructable is about building your own adapter to mount your mirrorless camera in place of film.
This isn't the first digital sensor mount I've made for a large-format camera; in http://aggregate.org/DIT/4X5
/ I describe how I packaged the sensor from a cheap webcam so it could be used in place of a 4x5 film holder. It was way back in the late 1970s that I built a back to mount my Minolta SRT101 film SLR on the very same 4x5 camera. In fact, on eBay for between $150 and $200, there are now various sellers offering similar backs with the additional feature that you can slide your DSLR horizontally in order to create stitched panoramas. They don't seem to come with mounts for mirrorless cameras, but you can always just stick an adapter on the DSLR mount to convert it to your mirrorless mount. Sounds pretty good, right? So why build your own?
Well, first off, the unit described in this instructable costs more like $10 to build. No, the digital camera can't slide for panoramas -- but that's ok, because most large format cameras allow the lens and/or the entire back to do that
, giving exactly the same functionality! In fact, the lens can shift in both
the horizontal and vertical directions, giving better functionality. However, the primary motivation is more subtle and more important: the mounts of necessity force a DSLR to be quite far behind the original film plane (unless you can push your DSLR partly inside the open back of the camera, as in http://www.thingiverse.com/thing:18989
), making it impossible to reach infinity focus with some lenses. The shorter flange distance on mirrorless cameras, combined with the lack of front-facing protrusions, allows them to come much closer to aligning with the intended film plane of the large format camera... so infinity focus is much more likely to be feasible and lens tilt and shift features are less likely to be impeded by mechanical obstructions.