Teleconverter | FUJI X WEEKLY

WCL-X100 & TCL-X100 for GFX??!!

I said something in my Is $5,000 A Bargain or Bust? article that caught a couple people’s attention. In regards to the upcoming fixed-lens GFX camera, I stated, “I really hope for conversion lenses—both wide and telephoto—like the X100-series has. I highly doubt that the WCL-X100 and TCL-X100 will work on it (although it would blow my mind if they somehow did), but something similar should be made for the GFX100RF.” I received two messages from people wanting to further discuss the idea that the wide and telephoto conversion lenses for X100-series cameras might be compatible with the upcoming medium-format model.

Just to be clear from the top, I’m highly skeptical that the WCL-X100 and TCL-X100 will be officially compatible with the GFX100RF. It’s possible that they might be, but that seems like improbable engineering. I don’t think Fujifilm designed the lens on the new camera to be compatible with those two conversion lenses. More likely—if there are conversion lenses—new ones will be designed specifically for the GFX camera. But…

Above: Surprisingly, the world’s smallest lens covers the APS-C sensor.

There’s a strong likelihood that you could actually use those two conversion lenses if you want to. Now, the camera is unlikely to account for and fix the distortion (unless the engineers programmed it to). There’s a good chance that the conversion lenses won’t cover the whole frame, or—if it does—there could be strong vignetting and soft corners. But maybe it won’t be as bad as you might think. For example, Pentax Auto-110 lenses, which are tiny, cover the APS-C sensor. The Helios 44-2 lens, which is for 35mm cameras, fully covers the GFX sensor. So there is a possibility that the WCL-X100 and TCL-X100 conversion lenses will cover most or maybe even all of the GFX sensor.

If they don’t, that may not be a big deal. Using a different aspect ratio will likely crop out whatever isn’t covered. If the conversion lenses cover almost all of frame, then the 3:2 ratio might be all you need. If the coverage isn’t quite that good, 16:9, 65:24, and 1:1 should do the trick. Or, with 100mp to work with, a simple crop should do—I could see using the teleconverter lens in conjunction with the in-camera digital teleconverter, which would crop out whatever isn’t covered.

*Fujifilm GFX100S II & Helios 44-2 – Fujicolor PRO 160C Warm Recipe*

The real question is if the adapter ring on the GFX100RF will be the same size as the X100-series. My guess is no. Most likely it will be larger on the GFX—I think that’s a pretty safe assumption. In the unlikely case that it is the same size, you’d be able to just screw on the conversion lenses just like you would on the X100VI. Much more likely, you would need a step-down ring to attach the conversion lenses. This would have (at least) two side effects: less coverage of the sensor, and more close-focusing capabilities—maybe even macro—like using an extension tube.

My hope is that Fujifilm releases conversion lenses for the upcoming GFX100RF. If they don’t, or if they do but they’re unaffordable or difficult to find in stock, then adapting the WCL-X100 and TCL-X100 should be possible; however, it may not be ideal. There will certainly be some vignetting and soft corners, and they probably will not cover 100% of the GFX sensor, among other potential issues. But, technically speaking, it should work. If I do purchase the upcoming camera at some point in the future, I’ll be sure to test it out and report back to you what I discover.

Fujifilm X100F Digital Teleconverter

Posted on August 28, 2017 by Ritchie Roesch

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Fujifilm has included an interesting feature on the X100F that I wanted to talk about. They call it a “Digital Teleconverter” which is a fancy name for zoom-by-cropping. It doesn’t sound all that useful, but it actually is.

As you are probably well aware, the Fujifilm X100F has a fixed 23mm (35mm equivalent) lens. That’s a great focal length for many types of photography; however, it’s not particularly versatile. Unlike an interchangeable-lens camera, you have just one focal-length to work with.

This isn’t necessarily a bad thing. You’d be surprised at the number of well-known and well-respected photographers who used just one camera and one lens for decades. Limiting oneself can be beneficial because it fosters creativity. Having only one focal length at your disposal is only a disadvantage if you make it so.

One great thing about the 24-megapixel X-Trans III sensor found inside the X100F is that it has a lot of resolution. Almost nobody prints at billboard size. Rarely do people print at poster size, and the X100F files are just fine for printing that big. Most people show their pictures on the internet and make 8″ x 10″ prints, and only occasionally print larger. Many find that this camera has a ton of headroom for cropping.

The Digital Teleconverter that Fujifilm programmed into the X100F isn’t just a way to crop pictures in-camera. It applies an upscale algorithm to the crop, and also applies some smart sharpening. It makes the crops look less, well, cropped. They don’t look so much like you used a “digital zoom” (which is what you used), but more like you had a couple other prime lenses at your disposal. Fujifilm really did an excellent job with how they designed this feature.

Sky Keepers – SLC, UT – Fujifilm X100F 75mm

You could do this all yourself with software. You could shoot RAW and do all the editing, cropping, upscaling, sharpening and so forth. Or you could let Fujifilm’s excellent JPEG engine do it automatically in-camera. This could save you some serious time!

The Digital Teleconverter has two options: 50mm (equivalent) focal length and 75mm (equivalent) focal length. This significantly increases the versatility of the fixed-focal-length X100F! It’s almost as if the camera has three different lenses built in.

The 50mm option uses 16 megapixels of resolution from the sensor, which is still plenty (the X100S and X100T had “only” 16 megapixels). 16″ x 24″ prints are no problem, and, if you have a good quality file, you can make nice looking 2′ x 3′ prints. Unless you are pixel-peeping or making poster-sized prints, you’ll have a hard time distinguishing the 50mm Digital Teleconverter images from full resolution files.

The 75mm option uses 12 megapixels of resolution from the sensor, which is still plenty for most people and most uses (the original X100 had “only” 12 megapixels). 12″ x 18″ prints are no problem, and, if you have a good quality file, you can make nice looking 16″ x 24″ prints. Unless you are pixel-peeping or making large prints, nobody will be able to tell that you cut out half of the picture.

In a sense, it’s like getting an X100 with a 75mm lens and an X100T with a 50mm lens packaged with your X100F. As good as that sounds, it’s actually even better because of the advancements and updates the new camera has that the old ones don’t.

Black Conduit – SLC, UT – Fujifilm X100F 50mm

Another advantage of the Digital Teleconverter is that it allows you to do macro photography with the X100F. The closest focus distance is about four inches, which isn’t quite close enough for macro at the 35mm (equivalent) focal length. But the 50mm and 75mm options allow you to achieve true macro, even if barely.

You can custom program many of the controls on the X100F. I have the Digital Teleconverter set to the manual focus ring, which I believe is the default setting. In auto-focus mode, turn the ring to the right and it zooms in and turn it left and it zooms out. It’s very convenient.

Some have complained that the Digital Teleconverter is a JPEG-only function. If you shoot RAW and you want to do a similar zoom-by-cropping, you’ll have to use a couple different software programs and spend awhile in front of a computer. Thankfully Fujifilm has included some excellent Film Simulation settings for camera-made JPEGs on the X100F. My favorites are Acros and Classic Chrome.

Here are some 50mm examples, all straight-out-of-camera JPEGs: