FUJIFILM Fujinon GF 45mm f/2.8 R WR Autofocus Lens for G-Mount, Black {62}

GF 45mm f/2.8 R WR: the GFX system's proven wide-angle workhorse.

At a 36mm equivalent, the GF 45mm sits at the most useful end of the wide-angle range for medium format work. The 11-element, 8-group construction draws on one aspherical and two ED elements to control chromatic aberration across the frame, and Nano GI coating handles the flare and ghosting that diagonal incident light reliably causes in wide-angle designs. Fluorine coating keeps the front element clean in the field. The result is a lens that earns its keep on the GFX sensor's demanding resolution.

At 490g and 88mm long, this is one of the lighter options in the GF lineup. The aperture ring includes a lockable A position and a C position for body-controlled exposure, giving you clean access to either workflow. Internal focus keeps the barrel length constant, and the lens operates down to -10°C with sealing across ten points. A 62mm filter thread is straightforward to fit into any existing kit.

For photographers already invested in the GFX system, the GF 45mm is the wide prime that makes the kit genuinely portable. Few other medium format lenses at this focal length combine weather resistance, f/2.8 aperture, and sub-500g weight.

Who It's For

Documentary and street photographers get a 36mm-equivalent field of view in a package light enough for hours of carry, with weather sealing rated to -10°C for unpredictable conditions. Landscape shooters benefit from the 62.6-degree angle of view and the aspherical and ED element corrections that matter at the pixel-level demands of the GFX sensor. Architecture and travel photographers working from a tripod will appreciate the aperture ring and lockable A position for deliberate exposure control. Portrait photographers needing a wider environmental option find f/2.8 sufficient for subject separation at medium format scale.

Key Features

• 45mm prime with 36mm-equivalent focal length on GFX
• f/2.8 maximum aperture, f/32 minimum
• 11 elements in 8 groups with one aspherical and two ED elements
• Nano GI and fluorine coatings reduce flare and ghosting
• Internal autofocus with full-time manual focus override
• Weather sealed to -10°C with ten sealing points
• 490g weight, 88mm length, 62mm filter thread
• Magnesium alloy construction with lockable aperture ring

FAQ

What focal length does the GF 45mm actually give you on a GFX body?

36mm equivalent in 35mm terms, which places it squarely in the wide-angle sweet spot for documentary and environmental work without the distortion aggression of ultra-wide lenses.

How does this lens handle flare and ghosting?

The Nano GI coating specifically targets diagonal incident light, which is where wide-angles struggle most. Combined with two ED elements and one aspherical element, you get clean rendition across the frame without the characteristic halo and loss of contrast that plague many fast wide primes.

Is autofocus fast enough for street photography?

Yes-internal focus means the barrel stays put, and the AF is responsive. Full-time manual focus override lets you override if you need it, which matters more for GFX than absolute AF speed.

Will this lens survive field use?

Ten sealing points and -10°C operating temperature are real specs, not marketing hyperbole. Fluorine coating on the front element keeps fingerprints and moisture from sticking. Magnesium alloy body handles knocks. It's built to work.

How much does it weigh and how long is it?

490g and 88mm long. For a medium format prime at f/2.8, that's legitimately compact. The 84mm diameter fits standard filter threads without adapter sprawl.

Can you use manual focus with the aperture ring in A mode?

Yes. Full-time manual focus works regardless of aperture ring position. The lockable A and C positions just control whether the body or ring sets aperture-they don't lock out focus control.

What's the closest you can focus?

45cm minimum, which gives 0.14x magnification. Tight enough for detail work but not macro territory.