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Fujinon GF45-100mmF4 R LM OIS WR vs Fujinon GF63mmF2.8 R WR
Short answer
The Fujinon GF45-100mmF4 R LM OIS WR (45–100mm) and Fujinon GF63mmF2.8 R WR (63mm) are both standard lenses for the Fujifilm GFX mount. The Fujinon GF63mmF2.8 R WR is the faster lens at f/2.8 against f/4 on the Fujinon GF45-100mmF4 R LM OIS WR. Only the Fujinon GF45-100mmF4 R LM OIS WR has optical stabilisation.
Fujinon GF63mmF2.8 R WR: 6 specs ahead
Side by side
| Fujinon GF45-100mmF4 R LM OIS WR | Fujinon GF63mmF2.8 R WR | |
|---|---|---|
| Brand | Fujifilm | Fujifilm |
| Focal length | 45–100mm | 63mm |
| 35mm equivalent | 36–79mm | 50mm |
| Maximum aperture | f/4 | f/2.8 |
| Mount | Fujifilm G | Fujifilm G |
| Autofocus | Yes | Yes |
| Optical stabilisation | Yes | No |
| Weather resistant | Yes | Yes |
| Aperture ring | Yes | Yes |
| Macro | No | No |
| Linear motor | Yes | No |
| Minimum aperture | f/32 | f/32 |
| Lens construction | 16 elements in 12 groups | 10 elements in 8 groups |
| Special elements | 3 aspherical, 1 ED and 1 superED elements | 1 extra-low dispersion elements |
| Angle of view | 62.6°-30.6° | 46.9° |
| Minimum focus | 0.65 m | 0.5 m |
| Maximum magnification | 0.13× | 0.17× |
| Weight | 1005 g | 405 g |
| Diameter | ⌀93 mm | ⌀84 mm |
| Length | 144.5–174.5 mm | 71 mm |
| Filter thread | ⌀82 mm | ⌀62 mm |
Where each one is ahead
Reasons to choose the Fujinon GF45-100mmF4 R LM OIS WR
- Longer reach 79 mm vs 50 mm
- Wider view 36 mm vs 50 mm
- Optical stabilisation Yes vs No
Reasons to choose the Fujinon GF63mmF2.8 R WR
- Maximum aperture f/2.8 vs f/4
- Minimum focus 0.5 m vs 0.65 m
- Maximum magnification 0.17× vs 0.13×
- Weight 405 g vs 1005 g
- Diameter ⌀84 mm vs ⌀93 mm
- Length 71 mm vs 144.5–174.5 mm
Both have weather sealing and an aperture ring.
Neither has a macro design.
Framing and reach
| Lens | Frames like | Horizontal view | Frame width at 10 m |
|---|---|---|---|
| Fujinon GF45-100mmF4 R LM OIS WR | 36–79 mm | 51.9°–24.7° | 9.7–4.4 m |
| Fujinon GF63mmF2.8 R WR | 50 mm | 38.3° | 7 m |
The Fujinon GF45-100mmF4 R LM OIS WR gets 1.58× closer to the subject than the Fujinon GF63mmF2.8 R WR: whatever it points at fills 1.58× more of the frame edge to edge, or 2.5× more of its area. With the Fujinon GF63mmF2.8 R WR you would have to walk about 37% of the distance towards the subject to get the same picture — or crop it later, which leaves roughly 40% of the original pixels.
Angles and widths are calculated from focal length and sensor width, horizontally, on the native sensor of each mount.
Size and weight
- The Fujinon GF63mmF2.8 R WR is 600 g lighter than the Fujinon GF45-100mmF4 R LM OIS WR, about 60% less.
- The Fujinon GF45-100mmF4 R LM OIS WR is 73.5 mm longer.
- The Fujinon GF45-100mmF4 R LM OIS WR is 9 mm wider.
- The Fujinon GF45-100mmF4 R LM OIS WR takes ⌀82 mm filters and the Fujinon GF63mmF2.8 R WR ⌀62 mm, so filters are not shared.
What each one suits
| Fujinon GF45-100mmF4 R LM OIS WR | Fujinon GF63mmF2.8 R WR | |
|---|---|---|
| Birds and wildlife | Poor | Poor |
| Sports | Poor | Poor |
| Portrait | Average | Good |
| Travel | Very good | Very good |
| Street | Average | Very good |
| Weddings | Very good | Very good |
| Walk around | Good | Excellent |
| Vlogging | Fair | Poor |
| Landscape | Very good | Average |
| Macro | Poor | Poor |
Scored from the published specifications — focal length, aperture, stabilisation, weather sealing and weight. Sharpness, bokeh and rendering are not in a spec sheet and are not scored here.
Cameras that take both
Both lenses fit every GFX body with interchangeable lenses — 7 in our list.
Which one to choose
Choose the Fujinon GF45-100mmF4 R LM OIS WR if
- your subject is far away. It magnifies 1.58× more, and walking closer is not always an option.
- you want more in the frame. It starts at 36 mm equivalent, against 50 mm on the other lens — interiors, landscapes and groups at close range.
- your camera body is not stabilised. Of these two, only this lens has optical stabilisation.
Choose the Fujinon GF63mmF2.8 R WR if
- low light is the priority. At f/2.8 it lets in 1 stops more than f/4 — faster shutter speeds indoors and softer backgrounds.
- weight matters to you. It is 600 g lighter, roughly 60% less to carry.
Everything above comes from published specifications. How sharp each lens is, how quickly it focuses and what its pictures look like are not in any spec sheet, so this comparison does not try to judge them.
Common questions
Which is lighter, the Fujinon GF45-100mmF4 R LM OIS WR or the Fujinon GF63mmF2.8 R WR?
The Fujinon GF63mmF2.8 R WR, by 600 g — about 60% less.
Which is better in low light, the Fujinon GF45-100mmF4 R LM OIS WR or the Fujinon GF63mmF2.8 R WR?
The Fujinon GF63mmF2.8 R WR. At f/2.8 against f/4 it gathers 1 stops more light, which matters without flash and for background blur. Stabilisation can offset some of that for still subjects, but not for moving ones.
Do the Fujinon GF45-100mmF4 R LM OIS WR and Fujinon GF63mmF2.8 R WR use the same filters?
No. The Fujinon GF45-100mmF4 R LM OIS WR takes ⌀82 mm and the Fujinon GF63mmF2.8 R WR ⌀62 mm. A step-up ring lets the smaller lens use the larger filters.
Will both lenses fit my camera?
Both use the Fujifilm G mount, so they fit any GFX camera with interchangeable lenses. They do not fit X Series bodies.
compare.faqTitle
Which one is lighter?
The Fujinon GF63mmF2.8 R WR, by 600 g (405 g against 1005 g).
Which is better, the Fujinon GF45-100mmF4 R LM OIS WR or the Fujinon GF63mmF2.8 R WR?
On measurable specs the Fujinon GF63mmF2.8 R WR leads, 6 wins against 1. That is a spec count, not a field test.
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Built from the specifications Fujifilm publishes.