The Sony FE 300mm f/2.8 GM OSS (SEL300F28GM) is a full-frame telephoto prime lens for Sony E cameras with a fixed f/2.8 aperture, optical image stabilisation, weather sealing, 20 elements in 16 groups, and a minimum focus distance of 2 metres โ weighing just 1470g with an 11-blade aperture diaphragm.
Key Specifications
- Focal length: 300mm (prime)
- Maximum aperture: f/2.8
- Minimum aperture: f/22
- Lens construction: 20 elements in 16 groups
- Aperture blades: 11 (for smooth, circular bokeh)
- Image stabilisation: Yes (OSS โ Optical SteadyShot)
- Minimum focus distance: 2m
- Weight: 1470g
- Dimensions: 124mm diameter ร 264mm length
- Filter: Drop-in filter system (40.5mm); front filter thread 40mm
- Weather sealing: Yes
- Lens mount: Sony E / FE (full-frame compatible)
What makes the Sony FE 300mm f/2.8 GM OSS special?
At 1470g, the Sony FE 300mm f/2.8 GM OSS is among the lightest 300mm f/2.8 large-aperture telephoto primes in its class. Competing 300mm f/2.8 lenses from other systems typically weigh closer to 2400โ2500g. That's a real-world difference of nearly a kilogram on your shoulder during a full day at a stadium or in the field.
Compared to the Sony FE 200-600mm f/5.6-6.3 G OSS โ a popular wildlife zoom โ this lens gives up reach but trades it for three stops of aperture advantage and substantially better subject isolation. The faster aperture also means dramatically higher shutter speeds in the same light, which matters enormously when freezing a sprinter mid-stride or a bird banking into a turn. The Sony FE 200-600mm f/5.6-6.3 G OSS costs considerably less, but for professional-grade output in challenging light, f/2.8 at 300mm is a different league.
The GM optics โ 20 elements in 16 groups โ deliver the kind of centre-to-corner sharpness and contrast that holds up when you push into pixel-level crops from high-resolution bodies like the Sony Alpha 7R V or Sony Alpha 1. The 11-blade aperture produces smooth, rounded bokeh even when the background is busy, which is exactly what you need when isolating an athlete against a packed crowd or a bird against a forest edge.
One of the most compelling real-world features is teleconverter compatibility. This lens pairs natively with Sony's 1.4ร and 2ร teleconverters, giving you effective focal lengths of 420mm f/4 or 600mm f/5.6 with full autofocus retained. That turns one lens into three focal length options, which is genuinely useful when mobility and lens economy matter.