Tamron 11-20mm f/2.8 Di III-A RXD APS-C Lens for Sony E-Mount {67} B060

Tamron's 11-20mm f/2.8 ultra-wide zoom built for APS-C Sony shooters.

This is the first f/2.8 ultra-wide zoom lens built natively for Sony E-mount APS-C mirrorless cameras. The constant f/2.8 aperture across the full 11-20mm range means you're not losing light at the longer end, which matters when you're shooting interiors, night skies, or any scene where stopping down is not an option. At 335 grams and 86.2mm long, it pairs with compact APS-C bodies without throwing off the balance, and the 67mm filter thread matches Tamron's 17-70mm f/2.8, so one set of ND and polarizer filters covers both lenses.

The optical formula runs 12 elements in 10 groups, with one XLD and two LD elements managing chromatic aberration, and two glass-molded aspherical elements keeping edge-to-edge resolution consistent across the frame. BBAR-G2 coating handles flare and ghosting in backlit situations. The RXD stepping motor autofocuses quietly and quickly, which matters for video work on a gimbal where motor noise bleeds into on-camera audio.

At the 11mm end, the minimum focusing distance drops to 5.9 inches with a 1:4 maximum magnification ratio. That's not a macro lens, but it gives you a wide-angle close-focus capability that no other APS-C Sony zoom in this focal range offers. Sony Fast Hybrid AF and Eye AF compatibility come built in through native mount communication, so the lens works fully within the Sony autofocus ecosystem without any feature compromise.

Who It's For

Astrophotographers shooting on Sony APS-C bodies benefit directly from the constant f/2.8 aperture across the full range, pulling in more light for Milky Way and night sky work without switching to a prime. Architecture and interior photographers get the 105° 20' angle of view at 11mm with chromatic aberration correction that keeps straight lines and clean edges intact. Travel and street photographers running a two-lens kit will find that the shared 67mm filter thread with Tamron's 17-70mm f/2.8 removes a real logistical headache. Video shooters on gimbals benefit from the near-silent RXD motor and the compact form factor that keeps rig weight down.

Key Features

• Constant f/2.8 aperture across 11-20mm range for ultra-wide zoom
• 12 elements in 10 groups with XLD and LD low-dispersion glass
• Two glass-molded aspherical elements for edge-to-edge sharpness
• RXD stepping motor delivers quiet autofocus for video work
• Minimum focusing distance of 5.9 inches at 11mm with 1:4 magnification
• BBAR-G2 coating suppresses flare and ghosting in backlit scenes
• 67mm filter thread compatible with Tamron 17-70mm f/2.8
• 335 grams and 86.2mm length pairs with compact APS-C bodies

FAQ

Is this really the first f/2.8 ultra-wide zoom for Sony E-mount APS-C?

Yes. The 11-20mm f/2.8 is the first native ultra-wide zoom with a constant f/2.8 aperture built for Sony's APS-C mirrorless mount. That constant aperture across the full range is what sets it apart from older designs that stop down at longer focal lengths.

How does the minimum focusing distance compare to other ultra-wide zooms?

At 5.9 inches (15cm) on the 11mm end with 1:4 magnification, it outperforms standard ultra-wide zooms. You get wide-angle close-focus capability without a dedicated macro lens, which opens up creative perspective distortion work that tighter focal lengths can't match.

Will this lens work with Sony's Eye AF and Fast Hybrid AF?

Yes. Native E-mount communication gives you full access to Sony's autofocus features without any compromise. The RXD motor is also quiet enough for gimbal work without motor noise bleeding into audio.

What's the weight and length, and does it balance with compact APS-C bodies?

335 grams and 86.2mm long. It pairs cleanly with compact APS-C bodies like the a6700 without throwing off balance. It's genuinely one of the lightest fast ultra-wides you can mount.

Why does the 67mm filter thread matter?

It matches the Tamron 17-70mm f/2.8, so one set of ND and polarizer filters covers both lenses. That's practical gear pairing if you're building a compact Sony APS-C system.

How is chromatic aberration handled at the widest angles?

One XLD and two LD elements manage color fringing, plus two glass-molded aspherical elements keep edge-to-edge resolution consistent. Wide-angle distortion is always present, but color separation is controlled across the frame.

Does this lens have weather sealing?

It has moisture-resistant construction and fluorine coating on the front element to protect against dust and smearing, though it's not full weather sealing like a professional telephoto. Sufficient for outdoor work in light conditions.