Fujifilm GF 45-100mm F4 R LM WR Lens

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

The Ultimate Medium Format Standard Zoom

For photographers who want the staggering resolution of the Fujifilm GFX system without constantly swapping prime lenses, the GF 45-100mm f/4 R LM OIS WR is the definitive everyday workhorse. Offering a highly versatile 36-79mm equivalent field of view on full-frame terms, it bridges the gap perfectly between wide-angle storytelling and short-telephoto portraiture.

Designed to resolve the massive detail of 50MP and 102MP medium format sensors, this lens refuses to compromise on optical quality just because it's a zoom. It combines a constant f/4 maximum aperture with robust optical image stabilization (OIS), making it a formidable tool for landscape photographers hiking into the backcountry, wedding shooters needing flexibility, or studio photographers demanding corner-to-corner perfection.

Why You'll Love This Lens

• The Perfect Focal Range: Covering a 36-79mm full-frame equivalent, this is the medium format version of a classic 24-70mm standard zoom (albeit starting slightly tighter). It covers almost everything you need for environmental portraits, landscapes, and documentary work without taking the lens off your camera.

• Constant f/4 Aperture: Unlike variable-aperture kit lenses, the f/4 maximum aperture remains consistent whether you are shooting wide at 45mm or zoomed all the way in to 100mm. This makes calculating exposure incredibly predictable, especially for video work or studio strobe setups.

• 5-Stop Optical Image Stabilization (OIS): Medium format sensors are notoriously unforgiving of camera shake. The built-in OIS provides up to 5 stops of compensation. When paired with the In-Body Image Stabilization (IBIS) of a GFX100 II or GFX100S, you can shoot handheld at surprisingly slow shutter speeds in fading light.

• Fast, Silent Autofocus (LM): Driving large medium format glass elements is no easy task, but the powerful Linear Motor (LM) ensures that autofocus is incredibly fast, precise, and nearly silent—crucial for both tracking subjects and recording video without picking up motor noise.

• Pro-Grade Build (R WR): The "R" denotes the physical, clicked aperture ring, allowing for tactile exposure control. The "WR" signifies exceptional weather resistance, with 11 distinct seals protecting the lens from dust, moisture, and temperatures down to 14°F (-10°C).

Technical Specifications

Things to Note

At 2.21 lbs (1005 g) and almost 5.7 inches long, this is a substantial piece of glass. While it replaces the need to carry two or three prime lenses in your bag, it will add noticeable weight to your camera rig and requires a large 82mm filter thread if you plan on using circular polarizers or ND filters.

Additionally, because it starts at a 36mm full-frame equivalent, it isn't ultra-wide. If your primary focus is expansive architecture, tight real estate interiors, or sweeping grand vistas, you might find the 45mm wide end a little too restrictive and may want to pair this with the wider GF 32-64mm f/4 or a dedicated wide-angle prime like the GF 23mm f/4.

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