The Best Astrophotography Lens for the Sony a6700 in 2026

This isn’t a ranked list. Only one lens earns a place for night-sky shooting on APS-C E-mount: Sony’s E 11mm F1.8. It’s the one lens both counted guides name for this mount, and each puts it first. Other APS-C lenses do turn up in astro roundups, but either as multi-mount picks with no mount tag, or in guides that don’t rank lenses by mount, so we didn’t count them. They’re listed under Also considered below.

Both guides we counted for this mount, Amateur Photographer and Space.com, name it first for APS-C E-mount. No other lens has a counted a6700 pick.

It’s an 11mm prime with an f/1.8 maximum aperture, made for APS-C E-mount, so it gives the a6700 a wide view of the sky and a bright aperture for short exposures.

✅ Buy it if you want a bright ultra-wide prime made for APS-C E-mount.
❌ Skip it if you’d rather have a zoom, or a faster f/1.4 prime from one of the lenses below.

Bottom line: 11mm prime, f/1.8 maximum aperture, named first by Amateur Photographer and Space.com; it’s the only a6700 / APS-C E lens with counted picks.

We have not reviewed it yet.

These lenses are named for APS-C E-mount astro work in guides we read but didn’t count, so they aren’t picked here.

• Sigma 16mm F1.4 DC DN Contemporary: named the best low-light lens for the Sony a6400 by Kevmrc, and called “the budget APS-C pick” by Next in Photography. Kevmrc is an a6400 low-light roundup, not an a6700 astro ranking, and Next in Photography names it in the text, not in its ranked lens list.
• Sony E 15mm F1.4 G: called “the best overall APS-C astrophotography prime” by Next in Photography, which names it in its text rather than its ranked lens list.
• Rokinon 12mm f/2.0 (AF and MF versions): named by Kevmrc as its astrophotography and budget astro picks for the a6400. Not counted, for the same reason.
• Sony FE 12-24mm F4 G: called “the best wide-angle Milky Way lens to pair with Sony crop-sensor models” in the APS-C section of Capture the Atlas, which doesn’t number its APS-C picks.
• Sigma 10-18mm f/2.8 DC DN Contemporary: called the best generic wide-angle lens for Milky Way photography on APS-C (Sony, Canon RF, L-mount and Fujifilm X versions) in the same Capture the Atlas section, also unnumbered.
• Sony E 10-18mm F4 OSS: listed in Markus Hagner Photography, which calls it “The APS-C Option”. That guide covers Sony E-mount lenses as a whole, mostly full frame, not by mount, so we didn’t count it for the a6700.
• Viltrox AF 13mm f/1.4, Sigma 12mm f/1.4 DC Contemporary, Sigma 15mm f/1.4 DC Contemporary, Samyang AF 12mm f/2 E, Sirui Sniper 16mm f/1.2, Laowa 9mm f/2.8 Zero-D, Tokina atx-m 11-18mm f/2.8 E, 7Artisans AF 10mm f/2.8, Yongnuo YN 11mm f/1.8S DA DSM WL and Yongnuo YN 16mm f/1.8S DA DSM: tagged APS-C and astrophotography in FitMyLens, a compatibility list that doesn’t rank lenses.

We counted every ranked pick in published best-astrophotography-lens guides for each mount. A pick counts only for the exact model, and only when it’s the camera maker’s own lens or a third-party lens the guide tags with that mount. Maker blogs, kit pages, star-rating roundups, compatibility lists and unranked pages don’t count. For the a6700 (APS-C E-mount), that leaves one lens, so we didn’t pad the page out to five.

Sources counted:

• Amateur Photographer (published date not shown, updated 2026-02-19)
• Space.com (published date not shown, updated 2026-03-05)

Read but not counted for this mount:

• FitMyLens (published date not shown)
• Markus Hagner Photography (published 2026-05-01, updated 2026-05-01)
• Kevmrc (published date not shown, updated 2023-10-17)
• Digital Camera World (published 2024-02-07, updated 2026-07-14)
• Capture the Atlas (published 2026-01-25, updated 2026-01-25)
• Next in Photography (published 2026-05-31, updated 2026-05-31)