Question 1

What is the 35mm equivalent of the Fujifilm GF 45-100mm f/4?

Accepted Answer

The Fujifilm G mount uses a 0.79x crop factor relative to 35mm full frame, so the GF 45-100mm f/4 gives you a roughly 36–79mm equivalent field of view. That means the wide end behaves like a classic 35mm street focal length and the long end sits comfortably in portrait territory — a genuinely useful everyday range on a medium format body.

Question 2

How does the Fuji GF 45-100mm compare to the GF 32-64mm f/4?

Accepted Answer

The Fujifilm GF 32-64mm f/4 R LM WR is the wider standard zoom in the GF lineup — it has no OIS but starts at a broader angle. The GF 45-100mm trades that wide-angle reach for the longer portrait end and adds optical image stabilisation, making it the better pick for handheld indoor portraits or low-light events. If you only own one GF zoom, the overlap you actually lose is modest and the stabilisation gain is real.

Question 3

Is 1005g too heavy for the GF 45-100mm to use handheld?

Accepted Answer

In practice, no — GFX bodies are already substantial, and the lens balances well on them. The built-in OIS helps compensate for any fatigue-induced camera shake during longer shoots. Photographers who shoot weddings or editorial sessions handheld regularly report no issues carrying it through a full day, especially on the GFX 100 or GFX 50S II.

Question 4

Does the Fujifilm GF 45-100mm f/4 have image stabilisation?

Accepted Answer

Yes — the OIS (Optical Image Stabiliser) is built into the lens itself, which is especially useful because not all GFX bodies have in-body stabilisation. The stabiliser works independently of the camera body, so you get handheld stability regardless of which GFX model you pair it with.

Question 5

What AF system does the GF 45-100mm use and how fast is it?

Accepted Answer

The lens uses a Linear Motor (LM) autofocus drive — the same type Fuji uses across its higher-end GF optics. Linear motors are known for being quiet and responsive, which matters for portrait sessions where a loud AF whirr is distracting. For video users, the near-silent operation is a practical bonus too.

Question 6

Is buying a used Fujifilm GF 45-100mm f/4 worth it?

Accepted Answer

Medium format glass holds its optical quality very well — there are no moving sensor elements inside a lens that wear out with use. A second-hand GF 45-100mm that's been properly inspected and graded performs identically to a new copy. On this platform every pre-owned lens is individually photographed and comes with a minimum 12 months warranty, so you're covered if anything unexpected shows up.

Question 7

What filter size does the Fuji GF 45-100mm f/4 take?

Accepted Answer

The filter thread is 82mm — a common size shared with several other large-aperture and medium format lenses, so if you already shoot with 82mm ND or polariser filters you won't need to buy new ones. A lens hood is included in the box.

Question 8

What cameras is the Fujifilm GF 45-100mm f/4 compatible with?

Accepted Answer

The lens uses the Fujifilm G mount and is compatible with all GFX series bodies — including the GFX 50S, GFX 50R, GFX 100, GFX 50S II, and GFX 100S. It is not compatible with Fujifilm X-series bodies, which use the smaller X mount.

Mount	Fujifilm G
Focal range	Standard
Prime / Zoom	Zoom
Focal length (min)	45 mm
Focal length (max)	100 mm
Max. aperture	f/4
Stabilisation
Weight (Grams)	1005
Year of release	2017
Auto Focus

Cart (0)

Fujifilm GF 45-100mm f/4 R LM OIS WR

Cart (0)

About the Fujifilm GF 45-100mm f/4 R LM OIS WR

Key Specifications

Who Is This Lens For?

Frequently asked questions