Verdict
Head-to-head · Best Wide-Angle Lenses for Sony E-Mount

Sony FE 14mm F1.8 GM vs Sony FE 20mm F1.8 G

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Sony FE 14mm F1.8 GM comes out ahead by a narrow margin (4.8 vs 4.7). The gap is mostly about Astrophotographers, landscape and architecture shooters who want the widest, brightest rectilinear prime in a travel-friendly size. — read the strengths below before deciding.

Sony FE 14mm F1.8 GM
Higher ratedRanked #2 in Best Wide-Angle Lenses for Sony E-Mount
Sony FE 14mm F1.8 GM
$1,698as of Jun 7

The FE 14mm F1.8 GM is an exceptionally compact and light ultra-wide prime that punches well above its size. It is razor-sharp from f/1.8, controls coma well enough for serious astrophotography, and weighs a fraction of competing 14mm lenses. The trade-offs are the fixed focal length, the rear-only filter system, and a premium price for a specialist angle of view.

Strengths
  • Outstanding center sharpness wide open at f/1.8, holding through f/11
  • Remarkably compact and light for the class at 460g, far smaller than rival 14mm primes
  • f/1.8 ultra-wide aperture is a serious tool for Milky Way and astro work
Watch-outs
  • Bulbous front element means no front filter thread; uses a rear filter holder only
  • Some wavy distortion that benefits from the correction profile
  • Fixed 14mm focal length offers no framing flexibility
Sony FE 20mm F1.8 G
Ranked #3 in Best Wide-Angle Lenses for Sony E-Mount
Sony FE 20mm F1.8 G
$998as of Jun 7

The Sony FE 20mm F1.8 G is one of the best-value ultra-wide primes in the E-mount lineup, pairing excellent sharpness and fast autofocus with a notably light 373g body. The 20mm f/1.8 combination is well suited to astro and low-light work, and the standard 67mm filter thread adds practicality. Mild coma wide open and the fixed focal length are the only meaningful trade-offs.

Strengths
  • One of the sharpest ultra-wide primes available, with few optical shortcomings
  • Very light and compact at 373g for a fast full-frame ultra-wide
  • Fast, accurate G-series autofocus suited to hybrid stills and video
Watch-outs
  • Some visible coma at the widest apertures that improves on stopping down
  • Fixed 20mm focal length limits framing flexibility versus a zoom
  • No optical stabilization, relying on in-body IS

How they stack up

Sony FE 14mm F1.8 GM

It goes wider and brighter than any zoom here, including the Sony FE 16-35mm F2.8 GM II, making it the astro and low-light specialist of the group. Compared with the Sony FE 20mm F1.8 G it is wider and pricier but loses the front filter thread. The fixed 14mm view is the trade-off versus flexible options like the Tamron 17-28mm F2.8 Di III RXD.

Sony FE 20mm F1.8 G

It is the cheaper, more practical prime sibling to the Sony FE 14mm F1.8 GM, sharing the f/1.8 aperture and astro pedigree but with a 67mm front filter thread the 14mm lacks and a less extreme 20mm view. At $898 it sits at a similar price to the Tamron 17-28mm F2.8 Di III RXD and Sigma 16-28mm F2.8 DG DN Contemporary zooms but trades their flexibility for a brighter aperture. It is far cheaper than the Sony FE 16-35mm F2.8 GM II.

Specs side-by-side

SpecSony FE 14mm F1.8 GMSony FE 20mm F1.8 G
Focal Length14mm20mm
Max Aperturef/1.8f/1.8
MountSony E (full-frame)Sony E (full-frame)
Weight460g373g
FilterRear filter holder (no front thread)
StabilizationNone (relies on in-body IS)None (relies on in-body IS)
Dimensions83 x 99.8mm73.5 x 84.7mm
Aperture Blades9
Filter Thread67mm
Minimum Focus0.18m (AF) / 0.19m (MF)
← See the full ranking of best wide-angle lenses for sony e-mount