You may have heard that Fujifilm has opened the door slightly to third-parties regarding their APS-C based X-mount. It seems they've finally given in to both unrelenting pressure from their users and the reality of being able to fully flesh out their lens lineup with more niche lenses in a timely and profitable way. One example: poor sales of the $5995 XF 200mm ƒ/2 with 1.4x Teleconverter, a specialty prime designed for sports and wildlife photographers. It seems very few people "clamoring" for that sort of lens actually put their money where their mouths are and has made Fujifilm gun shy about serving up more high performance, expensive, niche lenses. However, the result is Fujifilm opening up X-mount to approved third parties...
Eye-AF works pretty well with this combination. Focus is slow, but it's able to find and lock onto an eye. Because of my experience with the X-T3, sometimes my expectations can be a bit skewed; face and eye detect on the 2018 X-T3 is quite good, especially on distant (small) faces as Fujifilm has improved by leaps and bounds in this area. How quickly I forget the GFX 50S is over a year and a half older, with an imaging processor based on the X-Processor 3 design in the X-T2 and not the current X-Processor 4. Combined with other hardware limitations, plus the fact that the latest firmware update was over a year ago, eye AF on the GFX 50S (or 50R, for that matter) cannot be expected to perform anywhere near that of my X-T3.
There are some drawbacks though. Uncannily enough, they’re the same as with the Canon EF 28mm ƒ/1.8 USM: slight vignette with a hard vignette at infinity focus. At ƒ/8, it isn’t very prevalent as you’ll see in the samples, easily corrected with a 5:4 crop that retains 48MP. However, as the aperture gets smaller, the vignette hardens, as you can see at ƒ/32, but still works at a 5:4 crop ratio. The lens works fine with a 3:2 crop at full sensor width and in 35mm crop mode, so you can choose what works best for you.
Weirdly, the lens changes focus as you move in and out of playback mode on the GFX...
After spending a few weeks with the Sigma 50mm ƒ/1.4 Art, I've come to realize maybe Sigma lenses aren't the solution for me. At least the 50mm has a very short focus throw, making manual focus a tedious process, even with focus aids like focus peaking and focus zoom. Autofocus is just too unreliable and slow to depend on for all occasions, making manual focus capability a priority.
One thing I quickly discovered is the intrusion of the lens hood when adapting 35mm lenses onto the medium format GFX. Since the 50mm Sigma casts an image circle closer to 40mm, it's going to pick up more of what's on the periphery of the field of view; in this case it's the lens hood.... Continue Reading →
This is the first in a series of posts on individual lenses adapted to the Fujifilm GFX 50S with the TechArt Pro EF-GFX adapter.
Fujifilm GFX 50S, firmware v3.30 (latest) TechArt Pro EF-GFX, firmware v1.01 (latest) Sigma 50mm ƒ/1.4 Art, firmware v2.02 (latest)
Summary: Full compatibility: Autofocus, EXIF OK. This lens shows a correctable vignette throughout the aperture range but is heavily affected by focus breathing. As the aperture shrinks, focus toward infinity causes the vignette to become harder and more pronounced. Despite this, it is easily cropped and corrected while maintaining 45mp or more.
As I have alluded to in a burst of recent posts, I am planning to generate a small database of lenses for use on the Fujifilm GFX series. Here's my chance for an introduction to give my rationale and to lay the foundation of this endeavor. I'd like to break this down into three "Y's."
Let's begin with a personal "why": I'm choosing to use Sigma lenses to obtain focal lengths and apertures not currently offered in the GF lens lineup. Fujifilm's lineup is sparse at best, and apertures wider than ƒ/2 aren't represented. It's not that I'm a bokeh whore; it's that I need more light gathering for astrophotography and Fujifilm's widest lens, a 23mm, has a maximum aperture of ƒ/4 and that's just not going to work without a star tracker due to the sensor's 51MP resolution. I'm hoping to print a few of these so what counts for "sharp" on the web doesn't work at 20" print sizes. Other benefits: 35mm lenses are much cheaper, especially used prices, and these lenses mostly have direct focusing units unlike the "fly by wire" systems used on Fujifilm lenses. The GFX system just isn't mature enough to have grown both a complete lens lineup or a diverse used lens market.
Shot the Blue Angels performing on Sunday from the top of my condo building. This year, I benefitted from both the autofocus speed of the Fujifilm X-T3 and the reach of the XF 100-400mm ƒ/4.5-5.6 lens. The result was being able to actually see into the cockpits during some of the low passes around downtown. This is also without the 2x teleconverter installed, whose 2 stops of reduced light gathering would have slowed down the shutter speed to being nearly unusable.
This lens was once an excellent value from the inception of the X-Series system until now. Unfortunately due to Fujifilm's push to dominate in video, the introduction of the ƒ/2 lens, and the announcement of the 33mm ƒ/1, the 35mm ƒ/1.4 has lost all reason to exist in its current form. A complete redesign, implementing these features, could create a lens that outsells all of their other lenses by appealing to the widest range of users and without having to compromise.
I went out and bought the Fujifilm X-T3 on release day, which was September 20th. The spec sheet intrigued me because a lot of the bullet points revealed improvements that would improve my ability to shoot under less than optimal conditions, situations that can sometimes stump my X-T2. Mind you, this is not my review of the X-T3. That will come later when I've spent more time with it. As for the features relevant to me, they are as follows:
Just a quick little non-review of my first 24 hours with the v4.0 firmware for Fujifilm's X-T2.
On Sunday, I decided to give my X-T2 its first test of the ability to continuously autofocus during high speed burst shooting by attending the PAC-12 North Beach Volleyball Invitational Tournament held at Alki Beach in Seattle. As I plan on using this camera for a few airshows and motorsports events this season, specifically Seafair and motorcycle road racing, knowing what the Fujifilm X-T2 can, and can't, do while shooting 11 FPS bursts is sort of important to me. My needs are quite simple and easily achievable with a professional-grade dSLR like the Nikon D5 or D850, but based on all of the blogs reviewing the X-T2, it may not be so simple. So, I went out to find out for myself...
Beginning with a Fujifilm X-T20, a cold, wet November hike to photograph Twin Falls enlightened me to the benefits of a weather sealed camera. It was then durability surpassed convenience in priority and I bought my Graphite Silver Edition X-T2. 90 days later, I feel I’ve spent enough time with it to render a proper judgment, so here’s my own review of what I’ve experienced and ultimately learned.