OM System Olympus M.Zuiko Digital ED 12-100mm F4.0 is PRO for Micro Four Thirds System Review
The OM System 12-100mm F4 tries to be the only lens you need, with a huge zoom range and pro build. But is that convenience worth the trade-offs?
The 30-Second Version
This lens packs a 24 200mm zoom into one weather sealed barrel. It's built like a tank but it's large for the system. Buy it for ultimate convenience, not for speed or low light work.
Overview
The OM System 12-100mm F4.0 is a lens that asks one big question: what if you only had to carry one? It covers a 24-200mm equivalent range, which is a massive zoom span in a single package. That's the main event here. It's a constant f/4 aperture lens with weather sealing and a build quality that lands in the 85th percentile, meaning it's built tougher than most lenses out there.
Performance
This is an all-rounder, not a specialist. The optical performance is solid, delivering sharp images across its huge zoom range. Where it really shines is in its versatility. You can go from a wide-angle shot to a tight telephoto frame without changing lenses. The in-lens stabilization works with compatible bodies for rock-solid shots, though overall stabilization scores are about average. Autofocus and sensor performance are middle of the pack, which is fine for general photography but not for chasing fast action.
Pros & Cons
Pros
- Huge 24-200mm equivalent zoom range in one lens. 85th
- Excellent, weather-sealed build quality (85th percentile).
- Constant f/4 aperture across the entire zoom range.
- Sharp optics for a lens with this much range.
- In-lens stabilization for steady handheld shots.
Cons
- It's large and heavy for a Micro Four Thirds lens. 29th
- Autofocus performance is just average (43rd percentile). 30th
- Not a fast lens, so low-light performance has limits. 33th
- Video performance scores are below average (29th percentile).
- A pricey investment for a single lens.
The Word on the Street
Specifications
Full Specifications
Build
| Weather Sealed | Yes |
Value & Pricing
The price is the tricky part. Our data shows a wild spread from $1,180 to over $274,000 across different vendors. That high end is clearly an error or a placeholder. The realistic street price sits around that $1,180 mark. For that, you're getting a pro-grade build and incredible range, but you're paying a premium for the convenience. It's not the cheapest way to cover these focal lengths, but it might be the most convenient.
vs Competition
Compared to other systems, this lens is unique. A Nikon Z9 or Sony A7RV shooter would need two or three lenses to cover 24-200mm. For Micro Four Thirds users, the main competition is carrying a couple of smaller, faster primes or a standard zoom plus a telephoto. The Panasonic Lumix GH7 with a kit lens will be smaller and better for video, but it won't have this lens's reach or build. This lens trades ultimate speed and size for sheer versatility.
| Spec | OM System Olympus M.Zuiko Digital ED 12-100mm F4.0 is PRO for Micro Four Thirds System | Nikon Z Nikon Z9 Mirrorless Camera | Canon EOS R Canon EOS R6 Mark II Mirrorless Camera | Fujifilm X-H FUJIFILM X-H2 Mirrorless Camera | Sony Alpha Sony a7R V Mirrorless Camera | Panasonic Lumix GH Panasonic LUMIX GH7 Mirrorless Camera with 12-35mm |
|---|---|---|---|---|---|---|
| Type | - | Mirrorless | Mirrorless | Mirrorless | Mirrorless | Mirrorless |
| Sensor | - | 45.7MP Full Frame | 24.2MP Full Frame | 40.2MP APS-C | 61MP Full Frame | 25.2MP Four Thirds |
| AF Points | - | 493 | 1053 | 425 | 693 | 315 |
| Burst FPS | - | 30 | 40 | 20 | 10 | 75 |
| Video | - | 8K | 4K @60fps | 8K @60fps | 8K @60fps | 5K |
| IBIS | false | true | true | true | true | true |
| Weather Sealed | true | true | true | true | false | false |
| Weight (g) | - | 1179 | 590 | 590 | 726 | 726 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Evf | Build | Burst | Video | Sensor | Battery | Display | Connectivity | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OM System Olympus M.Zuiko Digital ED 12-100mm F4.0 is PRO for Micro Four Thirds System | 42.5 | 42.8 | 84.8 | 36.3 | 28.7 | 29.9 | 48.1 | 35.1 | 33.4 | 42 | 40.9 |
| Nikon Z 9 Compare | 97 | 97.5 | 99.6 | 92.1 | 97.4 | 98.9 | 99.2 | 86.9 | 96.1 | 92.4 | 90 |
| Canon EOS R 6 Mark II Compare | 99.1 | 96.2 | 96.8 | 95.9 | 89.9 | 94.9 | 99.4 | 95.5 | 96.1 | 98 | 90 |
| Fujifilm X-H 2 Compare | 95.6 | 99 | 87.1 | 92.1 | 100 | 92.3 | 99 | 95.5 | 96.1 | 98 | 98.9 |
| Sony Alpha a7R V Compare | 97.7 | 99.3 | 81.8 | 82.9 | 99 | 99.5 | 97.4 | 86.9 | 96.1 | 95 | 99.6 |
| Panasonic Lumix GH 7 Compare | 94.1 | 96.2 | 81.8 | 98 | 94.8 | 73 | 96.3 | 86.9 | 96.1 | 98 | 99.4 |
Common Questions
Q: Is this lens sharp at 100mm?
Yes, optical performance is a strong point. For a superzoom lens, it maintains very good sharpness throughout its range, including at the telephoto end.
Q: How is the autofocus speed?
It's about average. Our data puts it in the 43rd percentile. It's perfectly fine for portraits, landscapes, and casual shooting, but it's not designed for tracking fast sports or wildlife.
Q: Can I use this for video?
It's possible, but not ideal. The video performance score is in the 29th percentile, and the constant f/4 aperture isn't super fast for low-light video. You'd be better served with a dedicated video lens or a faster prime.
Who Should Skip This
Skip this lens if you shoot a lot of fast action or sports. Its autofocus is middle of the pack. Also, if low-light photography is your main thing, the f/4 aperture will hold you back compared to faster primes. And vloggers should definitely look elsewhere, as this lens scored in the bottom 12% for that use case.
Verdict
If you're a Micro Four Thirds shooter who hates changing lenses and values a bombproof build, this is your lens. The data backs up its role as a fantastic all-in-one travel and adventure optic. Just know what you're giving up: it's not a low-light champion, and it won't keep up with the fastest action cameras. For the right photographer, though, it's a game-simplifying tool.