I’ve tested the Fujifilm 45-100 mm f/4 against two other Fuji GFX zooms, the 32-64/4 and the 100-200/5.6. In this and the two posts after it, I’ll be comparing the lens to the Fuji 45/2.8, 63/2.8, and 110/2. I’m doing the 110/2 in this post, and testing it against the 45-100 at f/4, f/5.6 and… [Read More]

In my last post, I did a quick-and-dirty calculation of the focal length of the Fuji 45-100 mm f/4 G-mount lens when the nominal focal length was set to 100 mm. I got about 80 mm at 3 feet. There is an accurate method of measuring the focal length of lenses that was, if not… [Read More]

In the previous test, I was surprised to find that the focal length of the Fujifilm 45-100 mm f/4 at close range seemed to be more than 10% shorter than the Fuji 110 mm f/2. It could be that the marked focal lengths weren’t accurate on one or both of the lenses. Or it could… [Read More]

I’m hoping the title made the oenophiles reading this blog chuckle a bit. In the last post, I took a technical look at the out-of-focus performance of the Fujifilm 45-100 mm f/4 lens, and found it substantially inferior to that of the Fuji 110 mm f/2. Do these differences carry over into real-world shooting? This… [Read More]

I’ve had some questions about the bokeh of the Fujifilm 45-100 mm f/4. There are two aspects to bokeh. The first is relatively simple: how do the far-out-of-focus point spread functions (PSFs) vary across the frame, and what it their nature? That’s what determines the bokeh characteristics of the background on a wide-open, close-range portrait…. [Read More]