RF 28mm f/2.8 STMvs A1 II
Canon
RF 28mm f/2.8 STM (2023)
Starting from £299 new
Best for Travel, street & lightweight everyday carry
View RF 28mm f/2.8 STM
VS
Sony
A1 II (2025)
Starting from £6500 new
Best for Professional sports, wildlife & high-resolution studio work
View A1 II
GearScore™ Verdict — Which should you buy?
Travel, Street & Lightweight Everyday Carry — RF 28mm f/2.8 STM (2023): The most compact RF prime — at 85g it turns any EOS R into a true everyday pocket camera.
Professional Sports, Wildlife & High-Resolution Studio Work — A1 II (2025): The most complete camera ever made — 50MP, 30fps, 8K, and the world's best EVF in a single flagship body.
Who should buy what
A1 II (2025)
- Professional sports and wildlife photographers who need 30fps, 50MP, and the best AF available
- Commercial and advertising photographers who demand 50MP resolution alongside pro video specs
- Photojournalists who need a single body capable of handling every assignment
- Sony system shooters ready to invest in the absolute best
Quick take: The rf 28mm f/2.8 stm is the most affordable; only the a1 ii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | RF 28mm f/2.8 STM (2023) | A1 II (2025) |
|---|---|---|
| Price | £299 | £6,500 |
| Sensor | Canon RF mount (full-frame) | 50.1MP full-frame stacked BSI CMOS |
| Resolution | — | 50.1MP |
| Video | N/A — lens | 8K/30p, 4K/120p 10-bit, 4K/240p super slow-motion |
| Autofocus | STM — quiet, suitable for video | AI subject recognition — human, animal, bird, insect, vehicle, aircraft, train |
| Stabilisation | None | 8.5-stop IBIS (with in-lens OSS) |
| Burst Rate | N/A | 30fps electronic (with full AF/AE), 10fps mechanical |
| Battery Life | N/A | ~530 shots (CIPA) |
| Weight | 85g | 743g body only |
| Dimensions | 69.2mm diameter × 24.7mm length | 136.1 × 96.9 × 82.9mm |
| Weather Sealed | No | Yes |
| Viewfinder | N/A | EVF 0.9× 9.44M-dot — the highest resolution EVF available |
| Screen | N/A | 3.2" fully articulating touchscreen, 2.1M dots |
| Mount | 55mm filter thread | Sony E-mount (full-frame) |
| Memory Cards | N/A | Dual CFexpress Type A / SD UHS-II slots |
| Connectivity | N/A | USB-C 3.2 Gen 2, Wi-Fi 6GHz, Bluetooth 5.3, HDMI full-size |
Suitability by genre
| Genre | RF 28mm f/2.8 STM | A1 II |
|---|---|---|
| Travel | ||
| Street | — | |
| Vlogging & Video | ||
| Sports | — | |
| Wildlife | — | |
| Portrait | — | |
| Landscape | — |
More comparisons with RF 28mm f/2.8 STM
Camera family history