Illustration, not a product photo.

OM System · Micro Four Thirds · Prime

OM System M.Zuiko 45mm f/1.8

FOCAL 45mmAPERTURE f/1.8WEIGHT 116gFILTER 37mm
Portraits
New ≈£249
Used at MPB*£85–106
Find it used at MPB ↗All lenses

Overview

The OM System M.Zuiko 45mm f/1.8 is a micro four thirds 45mm f/1.8 prime lens for the Micro Four Thirds mount. It weighs about 116g and takes 37mm filters.

It's a strong choice for portraits. Around 85mm equivalent with a fast aperture (f/1.8 or brighter) for background blur.

In our database it fits 25 camera bodies natively. Approximate new price is £249; used at MPB it sells for £85–106 depending on condition and mount (checked 5 November 2026).

Specifications

BrandOM System
MountsMicro Four Thirds (First-party)
CoverageMicro Four Thirds
Focal length45mm
Equivalent on Micro Four Thirds (×2)90mm
Maximum aperturef/1.8
FocusAutofocus
StabilisationNo
Weather sealingNo
Weight≈116 g
Filter thread37 mm
Approx. new price£249
Used at MPB (Micro Four Thirds)£85–106

Compatible camera bodies

25 native

Panasonic Lumix G9 II2023 · Micro Four ThirdsNativeFirst-party · used from £944 Panasonic Lumix G92018 · Micro Four ThirdsNativeFirst-party · used from £399 Panasonic Lumix GH52017 · Micro Four ThirdsNativeFirst-party · used from £414 OM System OM-1 Mark II2024 · Micro Four ThirdsNativeFirst-party · used from £1,239 OM System OM-12022 · Micro Four ThirdsNativeFirst-party · used from £304 OM System OM-5 Mark II2025 · Micro Four ThirdsNativeFirst-party · used from £779 OM System OM-32025 · Micro Four ThirdsNativeFirst-party · used from £1,129 OM System Olympus E-M1 Mark III2020 · Micro Four ThirdsNativeFirst-party · used from £504 OM System Olympus E-M1 Mark II2016 · Micro Four ThirdsNativeFirst-party · used from £329 OM System Olympus E-M10 Mark IV2020 · Micro Four ThirdsNativeFirst-party · used from £354 Panasonic Lumix GH72024 · Micro Four ThirdsNativeFirst-party · new ≈£1,699 Panasonic Lumix GH62022 · Micro Four ThirdsNativeFirst-party · used from £669 Panasonic Lumix GH5 II2021 · Micro Four ThirdsNativeFirst-party · used from £599 Panasonic Lumix GH5S2018 · Micro Four ThirdsNativeFirst-party · used from £409 Panasonic Lumix G1002020 · Micro Four ThirdsNativeFirst-party · used from £234 Panasonic Lumix G97 (G90)2019 · Micro Four ThirdsNativeFirst-party · used from £369 Panasonic Lumix G802016 · Micro Four ThirdsNativeFirst-party · used from £259 Panasonic Lumix GX92018 · Micro Four ThirdsNativeFirst-party · used from £429 Panasonic Lumix GX802016 · Micro Four ThirdsNativeFirst-party · used from £334 OM System OM-52022 · Micro Four ThirdsNativeFirst-party · used from £554 OM System Olympus E-M1X2019 · Micro Four ThirdsNativeFirst-party · used from £549 OM System Olympus E-M5 Mark III2019 · Micro Four ThirdsNativeFirst-party · used from £489 OM System Olympus E-M10 Mark III2017 · Micro Four ThirdsNativeFirst-party · used from £234 OM System Olympus PEN-F2016 · Micro Four ThirdsNativeFirst-party · used from £684 OM System Olympus PEN E-P72021 · Micro Four ThirdsNativeFirst-party · used from £179

Alternatives to compare

Panasonic Lumix G 42.5mm f/1.742.5mm · f/1.7 · 130g · MFT≈£399 new · used from £189
Panasonic Lumix G 35-100mm f/2.8 II35-100mm · f/2.8 · 357g · MFT≈£849 new · used from £474
OM System M.Zuiko 40-150mm f/4 PRO40-150mm · f/4 · 382g · MFT≈£799 new · used from £534

Where to buy

*Used prices on this site come from MPB on 5 November 2026. MPB only lists what it has bought in, so "None listed" means none in their stock that day, not that OM System M.Zuiko 45mm f/1.8 is hard to find. Check these trusted UK dealers too.

MPB ↗UsedOnline used specialist with condition grading and a 12-month warranty. Prices on this site are MPB snapshots.Wex Photo Video ↗New & usedOne of the largest UK photo retailers: official UK stock, a big used department and trade-ins.Park Cameras ↗New & usedSpecialist with stores in West Sussex and London; official UK stock.London Camera Exchange ↗New & usedHigh-street chain across UK towns: inspect used gear in person.Clifton Cameras ↗NewAuthorised UK dealer for Canon, Sony, Nikon and more, with UK warranties.Cotswold Cameras ↗New · grey importCheaper parallel imports. No UK manufacturer warranty; store-backed guarantee instead.

See example photos

Real-world shots taken with the OM System M.Zuiko 45mm f/1.8 lens. Results are searches on each site, so check the camera or lens listed in each photo's details.

Flickr: most interestingFlickr groupsWikimedia Commons “Taken with” category500px

Frequently asked questions

Which cameras is the OM System M.Zuiko 45mm f/1.8 compatible with?

It's available for Micro Four Thirds. Native bodies here include Panasonic Lumix G9 II, Panasonic Lumix G9, Panasonic Lumix GH5, OM System OM-1 Mark II, OM System OM-1, OM System OM-5 Mark II.

Is the OM System M.Zuiko 45mm f/1.8 weather sealed?

No, it has no weather sealing; protect it in rain.

Does the OM System M.Zuiko 45mm f/1.8 have image stabilisation?

No. Use a camera with in-body stabilisation (IBIS) for steady hand-held shots.

What is the OM System M.Zuiko 45mm f/1.8 best for?

Portraits. Around 85mm equivalent with a fast aperture (f/1.8 or brighter) for background blur.

Compare with similar lenses

M.Zuiko 45mm f/1.8 vs Lumix G 42.5mm f/1.7