The 10 Best Micro Four Thirds f/2.8 Zoom Lenses, Ranked
A constant f/2.8 zoom keeps the same wide aperture across its whole focal range, so exposure and depth of field do not shift as you zoom. These are the workhorse professional zooms of the Micro Four Thirds system, covering wide, standard, and telephoto ranges. Because the M43 sensor is smaller, an f/2.8 zoom here is far smaller and lighter than the f/2.8 equivalent on full frame, which is one of the format’s real advantages for travel and event work. A few lenses go even faster, with constant f/1.7 zooms that have no equivalent in any other system.
Olympus M.Zuiko Digital ED 12-40mm f/2.8 PRO II
The default professional standard zoom. A 24-80mm equivalent at f/2.8, weather sealed, sharp across the frame, with a close-focus trick for near-macro. The first f/2.8 zoom most M43 shooters buy, and around $899 it is well priced.
- Constant f/2.8, 24-80mm equivalent
- Near-macro close focus
- Compact and weather sealed
- Same formula as the original
Panasonic Lumix G X Vario 12-35mm f/2.8 II
Panasonic’s equivalent standard zoom, a 24-70mm equivalent with Power OIS for Dual IS on Panasonic bodies. Slightly more compact than the Olympus, and the natural choice in a Lumix kit.
- 24-70mm equivalent with Power OIS
- Very compact at 305g
- Dual IS on Panasonic bodies
- Pricier than the Olympus 12-40mm
Olympus M.Zuiko ED 40-150mm f/2.8 PRO
The telephoto half of the PRO f/2.8 pair, an 80-300mm equivalent. Excellent for portraits, events, and sports, and it accepts the MC-14 and MC-20 teleconverters for extra reach.
- 80-300mm equivalent f/2.8
- Takes MC-14 and MC-20 teleconverters
- Sharp wide open, weather sealed
- Heavy at 880g
- No built-in OIS
Panasonic Leica DG Vario-Elmarit 35-100mm f/2.8 Power OIS
A 70-200mm equivalent in a remarkably small body, far lighter than any full-frame 70-200mm f/2.8. With Power OIS it is the Panasonic telephoto match for the 12-35mm.
- 70-200mm equivalent in a compact body
- Power OIS for Dual IS
- Leica rendering
- Expensive at $1,499
OM SYSTEM M.Zuiko Digital ED 50-200mm f/2.8 IS PRO
A constant f/2.8 reaching 400mm equivalent, with built-in stabilisation. The longest-reaching f/2.8 zoom in the system and the most expensive here at around $3,499, aimed at wildlife and sports shooters who want one bright zoom.
- Constant f/2.8 to 400mm equivalent
- Built-in stabilisation
- Longest reach at f/2.8
- Very expensive at $3,499
- Large and heavy
Leica DG Vario-Elmarit 12-60mm f/2.8-4
Not a constant f/2.8, but a hugely versatile 24-120mm equivalent that starts at f/2.8. The best single walkaround zoom for many Panasonic shooters, certified by Leica, and great value around $797.
- 24-120mm equivalent, wide range
- Leica optics with Power OIS
- Great value at $797
- Variable aperture, not constant f/2.8
Olympus M.Zuiko ED 7-14mm f/2.8 PRO
The professional ultra-wide zoom, a 14-28mm equivalent at constant f/2.8. The go-to for landscapes, architecture, and astro where you want a bright, wide field of view.
- Constant f/2.8 ultra-wide
- Sharp corners wide open
- Weather sealed
- Bulbous element, no standard filters
Panasonic Leica DG Vario-Elmarit 8-18mm f/2.8-4
A 16-36mm equivalent ultra-wide that takes standard front filters, unlike the bulbous 7-14mm. A practical wide zoom for landscape shooters who use ND and polarising filters.
- 16-36mm equivalent, takes filters
- Compact and weather sealed
- Leica optics
- Not constant f/2.8
Panasonic Leica DG Vario-Summilux 10-25mm f/1.7
A constant f/1.7 zoom, brighter than any f/2.8 and with no equivalent in any other system. A 20-50mm equivalent that effectively replaces a bag of fast primes for video and low light, at a premium price.
- Constant f/1.7, unique to M43
- Replaces several fast primes
- Weather sealed
- Large, heavy, and expensive
Leica DG Vario-Summilux 25-50mm f/1.7 ASPH
The telephoto partner to the 10-25mm, a 50-100mm equivalent at constant f/1.7. Together the two cover 20-100mm equivalent at an aperture primes usually own, ideal for run-and-gun video.
- Constant f/1.7, 50-100mm equivalent
- Pairs with the 10-25mm
- Weather sealed
- Premium price near $1,500
Frequently Asked Questions
What is a constant f/2.8 zoom lens?
A constant aperture zoom holds the same maximum aperture across its entire focal range. An f/2.8 zoom stays at f/2.8 whether you are at the wide end or the telephoto end. This is different from a variable aperture kit zoom, which might be f/3.5 at the wide end and f/5.6 zoomed in. The constant aperture means your exposure and depth of field stay consistent as you zoom, which matters for video and for fast-changing scenes.
Are M43 f/2.8 zooms smaller than full-frame ones?
Yes, significantly. Because the Micro Four Thirds sensor is a quarter of the area of full frame, the lenses that cover it are smaller and lighter for the same aperture and equivalent field of view. An M43 f/2.8 standard zoom is noticeably more compact than a full-frame 24-70mm f/2.8, which is a major reason photographers choose the system for travel, events, and all-day carry.