A list of every G-Mount lens available from Fujifilm and third-party lens manufacturers that work for the Fujifilm GFX 50s. Currently there are no third-party G-Mount lenses.
There are also many full frame lenses that can work on the GFX 50s. You will get vignetting but it's nothing a little crop can't fix. For this I've posted some adapters that can be useful to adapt vintage lenses.
There are a few adapters still on the way that will work sort of as the opposite of speed boosters, so they will have a built-in element that will allow full frame lenses to fill the surface area of this medium format sensor. I'll list those when they are available.
Use the Depth Of Field Calculator to find equivalent focal length and apertures.
Currently there aren't too many lenses available for the GFX 50s, but Fujifilm has done a great job on covering the range most people will need for a camera of this class.
When picking lenses for the medium format Fujifilm system you take into consideration the crop factor of the larger sensor.
With the current GFX 50s sensor the crop factor is about .8, technically 0.79. I'll list the 35mm equivalent lengths along with the lenses so you don't have to think about it.
GF – Fuji's G series lens mount, for the GFX cameras. Not to be confused with the Nikon G-Mount. They are not the same.
Mitakon has started making lenses for the GFX system or the G-Mount. Mitakon is a decent lens company based out of China. They use interesting designs usually with several ultra high refractive elements to get very fast lenses as small as possible. Often they're not as bright, but you still get nice bokeh at a good price with a decent build quality.
In general, I do like these lenses for the price, but they often have decentric issues you'll have to watch out for. Focus often starts to get rough after awhile and sometimes the focusing can seize up in cold weather. I based that off the 5 SLR Magic lenses I've tried which are OEM Mitakon and several Mitakon lenses I've owned and tested with the FX mount and EOS Mount.
These Chinese companies get better over time and they continue to invest in new and better equipment. Mitakon designs keep getting better as their team learns and grows. They're definitely worth a try and they are very popular for shooters that want fast lenses on a budget. Be sure to thorough test these lenses when you buy them, especially if you buy them during a flash sale where camera stores try to offload the duds.
Venus Optics has a 17mm f4 lens coming soon to the GFX system. Their lenses have great build quality and fantastic output. A 17mm would give you a 13.4mm field of view equivalency with the depth of field output equal to f3.16 from a full frame camera.
With such expensive lenses it makes sensor to have a few UV filters for when you're out in the field and the weather is questionable.
Personally I prefer B+W and have always found their quality to be superior.
There are a few different types of B+W UV filters, multi-coated, nano coated, then 010, and 007.
This has to do with thickness. The 007 are a little thinner overall and a bit lighter.
Just different coatings that make some small marginal insignificant difference on some chart somewhere, but having used both lenses for years, the main difference I've noticed is the Nano Coated lenses don't get dirty as easier, and are easier to clean. It's worth it in my opinion.
There are some vintage lenses out there that can be adapted to the new Fujifilm G Mount. For those looking to experiment with different focal lengths, this might be a more interesting way to do it.
There are some adapters from LAOWA coming that will work sort of as the opposite of speed boosters, so you can adapt your full frame lenses without the vignetting. I believe they will work for Canon and Nikon lenses.
As new lenses and adapters rollout, I'll continue to update this list. It looks a little sparse right now but over the years this list should mature nicely considering the popularity of the GFX camera system.
If you've found anything cool and useful that you think should be on this list, leave me some feedback and I'll update.