Sigma 24-70mm f/2.8 DG DN II Review: 90% of G-Master Quality at Half the Price

The Sigma 24-70mm f/2.8 DG DN II makes a compelling argument against paying the Sony G-Master premium. Over several months of professional use — ski shoots, commercial work, landscapes, and gimbal video — this lens proved itself as a true workhorse that delivers roughly 90% of the flagship's performance for around half the cost.

Key Specs

Focal length: 24-70mm (full-frame Sony E)
Aperture: f/2.8 – f/22
Weight: 735g (1.6 lbs) — 100g lighter than V1
MFD: 6.7" (17 cm)
Filter: 82mm
Weather-sealed throughout
De-clickable aperture ring, AF/MF switch, 2× custom focus buttons
No optical stabilization

Build & Handling

The lens combines metal and high-quality plastic into a body that feels sturdy without being bulky. The 100g weight reduction from the original Sigma makes a real difference on gimbals — this version balances on a DJI RS3 Pro where the V1 didn't. The zoom and focus rings are well-damped and tactile. The aperture ring de-clicks for video work.

The barrel extends while zooming and there's no optical stabilization, but neither is a dealbreaker given modern Sony IBIS performance and the compact form factor tradeoff.

Autofocus & Image Quality

AF is fast, accurate, and fully compatible with Sony Eye AF and tracking. At a high-speed ski shoot with subjects moving 60+ mph, the lens never lost lock. It's virtually silent — a major plus for video.

At f/2.8, center sharpness is excellent, and edge performance holds up well. Stopping to f/4-5.6 delivers tack-sharp results across the frame. Bokeh is smooth for a zoom. Vignetting is present at f/2.8 but easily corrected. Chromatic aberration is well-controlled.

One caveat: third-party lenses are capped at 15 fps on Sony a1/a9 bodies — a limitation worth knowing for sports shooters.

Value & Alternatives

At under $1,200, this represents exceptional value. The Sony 24-70mm GM II is slightly sharper and lighter with no frame-rate limits but costs nearly double. The Tamron 28-75mm f/2.8 G2 is more affordable but sacrifices the 24mm wide end. The original Sigma V1 is heavier with fewer controls — buy it only if significantly discounted.

FAQ

Q: Is this lens weather-sealed? Yes — sealing at key points throughout the barrel.

Q: Does it work well on a gimbal? Yes — it's compact and light enough for DJI RS3 Pro setups.

Q: Is it sharp wide open? Very — especially in the center. Edge sharpness improves as you stop down.