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Fujinon GF 45-100mm F/4 R LM OIS Lens Review - Performance

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Fujinon GF 45-100mm F/4 R LM OIS Performance

At 45mm central sharpness is outstanding from f/4 right through to f/16, excellent at f/22 and very good at f/32. The edges are very good at f/4, excellent at f/5.6 and f/8, outstanding at f/11 and f/16, very good at f/22 and good at f/32.

At 60mm, central sharpness is excellent at f/4, outstanding from f/5.6 to f/16, excellent at f/22 and very good at f/32. The edges are excellent at f/4, outstanding from f/5.6 to f/16, excellent at f/22 and good at f/32.

At 80mm, central sharpness is excellent at f/4, outstanding from f/5.6 to f/22 and very good at f/32. The edges are excellent at f/4, outstanding from f/5.6 to f/22 and very good at f/32.

At 100mm, central sharpness is outstanding from f/4 to f/22 and very good at f/32. The edges are very good at f/4, outstanding from f/5.6 to f/22 and very good at f/32.

That is a pretty remarkably set of results. There is even value in having the smallest aperture of f/32, which does extend the depth of field that is viable.

Fujifilm Fujinon GF 45-100 f/4 R LM OIS WR MTF Charts

How to read our MTF charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges.

The scale on the left side is an indication of actual image resolution and sharpness as LW/PH and is described in detail above. The taller the column, the better the lens performance.

For this review, the lens was tested on a Fujifilm GFX 50S using Imatest. Want to know more about how we review lenses?

 

CA (Chromatic Aberration) across the entire zoom range is all but banished at the centre of the frame and the edges are very close behind. This results in clean images even in very demanding circumstances, such as branches against bright sky, so it is highly unlikely that any further correction would be needed, in any circumstances.

 

Fujifilm Fujinon GF 45-100 f/4 R LM OIS WR Chromatic Aberration Charts

How to read our CA charts

Chromatic aberration (CA) is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on a Fujifilm GFX 50S using Imatest.

 

Distortion is tightly under control throughout, measuring -0.36% Barrel at 45mm, -0.06% Barrel at 60mm, -0.04% Barrel at 80mm and +0.01% Pincushion at 100mm. For most applications this can be considered to be rectilinear and straight lines at the edge of the frame will remain straight.

Bokeh is gorgeous throughout, very smooth indeed.

Flare is perhaps the only area where the lens falters even a little, and with the sun right at the edge of the frame, it is possible to generate some faint artefacts and also see a drop in contrast. However, to be fair, this is pretty extreme and in most situations, images are crisp and do not show any signs of loss of contrast due to flare.

Vignetting is also well controlled, despite the large image area being covered.

 

Aperture

45mm 60mm 80mm 100mm
f/4 -1.1 -0.8 -1.3 -0.5
f/5.6 -0.9 -0.8 -1.2 -0.4
f/8 -0.9 -0.8 -1.2 -0.2
f/11 -0.9 -0.8 -1.2 -0.2
f/16 -0.9 -0.8 -1.2 -0.2
f/22 -0.9 -0.8 -1.2 -0.2
f/32 -0.9 -0.8 -1.2 -0.2

 

As can be seen from the results, this is indeed a remarkable lens of the very highest calibre.

 

Fujifilm Fujinon GF 45-100 f/4 R LM OIS WR Sample Photos

 

Fujifilm Fujinon GF 45-100 f/4 R LM OIS WR Aperture range

 

You can view additional images in the Equipment Database, where you can add your own review, photos and product ratings.


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