Mirrorless lens mount statistics
Sony E is the most open major mount: 68% of its 103 lenses in this dataset come from third-party brands (10 brands in total), against 15% on Canon RF. Across all 295 verified lenses here, 63% are primes. Computed from manufacturer catalogs — full tables below.
Every figure on this page is computed from the 295 manufacturer-verified lenses and 77 camera bodies in the FitMyLens dataset (methodology) — a curated, growing set, not a census of every lens ever made. That scope is stated so the numbers can be cited honestly. Free to reuse with a link (how to cite).
The ecosystem, mount by mount
| Mount | Lenses | Brands | Third-party share | Zooms | Primes | Bodies |
|---|---|---|---|---|---|---|
| Sony E | 103 | 10 | 68% (70) | 32% | 68% | 22 |
| Nikon Z | 48 | 3 | 35% (17) | 35% | 65% | 14 |
| Fujifilm X | 43 | 7 | 51% (22) | 28% | 72% | 13 |
| Canon RF | 40 | 3 | 15% (6) | 50% | 50% | 13 |
| L-Mount | 32 | 3 | 0% (0) | 47% | 53% | 7 |
| Micro Four Thirds | 29 | 3 | 0% (0) | 45% | 55% | 8 |
"Third-party" means a brand other than the mount owner — for the L-Mount Alliance (Leica, Panasonic, Sigma) and Micro Four Thirds (Olympus/OM System, Panasonic), alliance members count as first-party, which is why both show 0% here.
Third-party support is the widest gap between mounts
In this dataset, Sony E carries 70 third-party lenses from brands like Sigma, Tamron, Viltrox, Samyang and Zeiss — 68% of its native line-up. Canon RF, which only began licensing third-party autofocus lenses in 2024, carries 6 (15%). Nikon Z sits between at 35%. For a buyer, that share is the practical difference between three price quotes per focal length and one.
Zoom vs prime
Primes dominate mirrorless catalogs: 63% of the 295 lenses here are primes. The outlier is Canon RF at 50% zooms — Canon's first-party line leans on zoom coverage where open mounts fill the prime gaps with third-party glass.
Cameras per mount
Sony E: 22 · Nikon Z: 14 · Fujifilm X: 13 · Canon RF: 13 · L-Mount: 7 · Micro Four Thirds: 8 — of the 77 current mirrorless bodies indexed here. Every body, with every lens that fits it →
Common questions
Which lens mount has the most third-party lens support?
Sony E: 70 of its 103 lenses in this dataset (68%) come from brands other than the mount owner, across 10 lens brands in total. Canon RF remains the most closed major mount, with 15% third-party lenses in this dataset.
Are most mirrorless lenses zooms or primes?
Primes. Across the 295 verified lenses in this dataset, 63% are primes and 37% are zooms. Canon RF is the outlier: half of its current native line-up here is zooms.
How many brands make lenses for each mount?
Sony E: 10 · Nikon Z: 3 · Fujifilm X: 7 · Canon RF: 3 · L-Mount: 3 · Micro Four Thirds: 3. Sony E leads with 10 distinct lens brands in this dataset.
How to cite these statistics
Free to reuse under CC-BY-4.0 — cite FitMyLens with a link to this page. Suggested citation:
FitMyLens mirrorless lens dataset (295 manufacturer-verified lenses across 6 mounts, verified 2026-06-21). https://fitmylens.com/statistics/
Methodology
Counts are computed at build time from the FitMyLens dataset: every lens's mount, brand, focal length, aperture and type comes from the manufacturer's official product name and catalog entry (sources). The set is curated and growing — figures describe this dataset, not every lens ever manufactured, and update automatically as lenses are added. We deliberately store no prices, so no price statistics appear here. Corrections: tell us.