I already have a Fujifilm 1.4X teleconverter and use it with the XF50-140mm. I was hesitant to invest 2.0x, wondering if the extra raise over 1.4x would be worth it. I also read that 2.0X degrades image quality compared to 1.4X. If 2.0X vs 1.4X degrades the image quality, I think you should be one of those guys doing the "Brick Wall" image quality test with a tripod. After getting used to working with 2.0X on my XPro-3 for a few days, I was very happy with my XF50-140mm F2.8 lens. I use a Gariz half bag and will probably use a Fujifilm grip adapter for longer walks with this gear. Notice that you end up with higher F-stops. And you have to compensate with a faster shutter speed and higher ISO than you could with a standard lens. In other words, there is no such thing as "free lunch". I didn't use a tripod with a lens. I will not do this unless the lighting or subject of the image requires it. Hand shots in good light deliver very good results. I really want to try night shots of the moon at 2.0x. just for fun. I think if you like lunar shots then more power is required, even with my current combo. I will keep both 1.4X and 2.0X. It's like having three lenses in my zoom arsenal. Of course, those looking for maximum performance/magnification should stick with "bigβ zoom lenses or "bigβ fixed lenses if you can afford maximum performance. But for me it's a great compromise with a lens I already own and love.
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