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 post, I’ll be comparing the lens to the Fuji 45/2.8 at f/4, f/5.6 and f/8. I’ll be looking at center and corner sharpness using a 22-inch-diameter low-contrast Siemens star target that I printed for this test.
The scene, at f/4 with the 45-100:
Target distance was 14 meters.
- The heaviest RRS legs
- Arca Swiss C1 head
- ISO 100
- Electronic shutter 1/10 at f/4, 1/5 at f/5.6, and 1/2.5 at f/8
- 2-second self-timer
- AF-S, medium spot size
- 3 sets of shots at each test condition
- Developed in Lightroom
- Picked best shot of each test condition
- Sharpening amount 20 radius 1, detail 0 (much less sharpening than the default)
- Adobe Color profile
- White balanced to grey background
We’ll look at some tight crops at about 130% magnification.
The prime is slightly sharper, but not enough to make a difference in real-world photography.
I call that a wash.
Also a push.
In the upper-right corner:
Very close. The sagittal and tangential sharpnesses are more different in the case of the prime, which is not what I’d expect.
The prime is a little sharper.
The prime is better.
I am amazed at how well the 45-100 did in comparison tot he 45/2.8 in this test.