The Fujifilm GFX100RF is collecting general praise all over the internet for just how incredibly small and light it is for a medium format camera, and also for its excellent build quality.
But of course they also address the fact that it does not have IBIS.
Now, you can read more about it below, but in general it seems the consensus is that at 1/30th you can still get away with sharp images, but below that it starts to get tricky. That’s according to Luca Petralia (review below) and docma (article in German below) and also to the Vistek video we shared in our live blog. Of course I have not tested it myself (I am just a mere mortal like you and I don’t get anything from Fujifilm unless I pay full price for it), so for now I will just report what reviewers have to say about it.
Out of curiosity I checked the shutter speeds of my last few hundred images, and I found one at 1/33th, one at 1/50th a few at 1/60th and 1/80th but mostly I am well over that. So if the statements of reviewers so far holds true, if I were to use the GFX100RF with my style of shooting I could live very well without IBIS. Of course I have shots at even slower shutter speeds, but for those I used a tripod anyway, as I was working either in blue hour landscape/cityscape or with filters and I needed exposures of multiple seconds.
With that said, here are the reviews I mentioned above as well as a few more, including interviews with Fujifilm managers that while nice to listen at, do not really disclose anything new, hence I did not dedicate them a specific article but I decided to include them in this roundup.
I thought that given the rumor, we could re-share his renderings and trigger a discussion about how you guys would like the Fujinon XF23mm to be.
Should it be ultra-mega compact and have an f/2.8 aperture? Or make it a big bigger but give it an f/2 aperture as in the renderings above, making it more of a “muffin-lens” rather than a “pancake-lens”?
As reference, you can see how such a XF23mm muffin-lens version would compare in size to the current Fujinon XF23mmF2 R WR. Too close in size? Better make it even smaller and f/2.8, making it closer in size to the Fujnon XF27mmF2.8 R WR?
There are GF lens savings also in Europe. However, Europe also has X deals. They end March 31.
Note 1: in UK you can buy X-T50 body or any kit, you’ll save £210 if you add XF23mmF2 or XF50mmF2 to you purchase Note 2: Amazon IT is an authorized retailer, but make sure it is shipped and sold by Amazon. Amazon UK is not authorized. Also Amazon DE is not listed as authorized, but I see the X-T50 deal anyway (so far) at Amazon DE at the same price of authorized dealers
Well, that’s exactly what Thomas and Andreas asked the Japanese product managers of Fujifilm when they met them in Prague, who passed them the chart you can see above (video below).
Let’s take a look:
The important lines in the chart are the black diagonal lines. In that chart you can see that in order to get sharp images with for example a 250mm lens, you need to shoot at about 250th of a second.
On the very top (over the red line) we have the telephoto lenses that need OIS.
The purple on the left is the range where you need a tripod.
The yellow part shows where IBIS works best.
On the right we see the range that does not need IBIS and can be shot handheld without IBIS and yet get sharp images, and they marked the 35mmF4 in that range.
So, looking at the chart, I’d say that if you shoot at 1/40th of a second or higher, then IBIS would be of little use anyway.
And maybe in real world, you might be able to squeeze a bit more out of it. Test samples shared at the German fuji-x-forum.de look still sharp at 1/20th. So probably I personally would feel confident to go down to 1/30th, unless I am on my 7th coffee and my hands shake like crazy ;).
Also the leaf shutter helps to get sharper images, because it does not introduce as many vibrations as the mechanical shutter does.
One more tidbit about IBIS discussed in the video:
implementing IBIS would have made the camera bigger, but not that much.
Apparently the increase in body size would still be acceptable for Fujifilm. The problem would have been the lens, as in order to cover the entire sensor plus the area in which the sensor can move due to IBIS, the lens would have become significantly bigger. And since compactness was paramount for Fujifilm when developing the GFX100RF, they decided not to go with IBIS. The body size increase would have still been acceptable, but not the lens size.
And always keep in mind: whatever moves in your frame at very slow shutter speeds will get blurry anyway, as IBIS only compensate for camera shakes.