Best travel lenses for the Sony a7 III
20 travel lenses that fit the Sony a7 III (Sony E mount) — one-lens range and low weight. Sorted brightest-aperture first; every spec from the manufacturer's catalog.
Start with the Samyang AF 45mm f/1.8 FE. At f/1.8 it is the brightest of the 20 travel Sony E lenses that fit the Sony a7 III — the full comparison is below.
Check the Samyang AF 45mm f/1.8 FE price on Amazon →
One limit of this table: it lists only Sony E lenses that mount natively on the Sony a7 III — lenses fitted through an adapter are not included here. See which mounts adapt to which.
Weight & weather sealing on the Sony a7 III
On long approaches the decision is often made by weight, not aperture. Published weights for 20 of the 20 lenses above:
| Lens | Weight | Weather sealing |
|---|---|---|
| Viltrox AF 20mm f/2.8 | 157g | None claimed |
| Samyang AF 45mm f/1.8 FE | 162g | None claimed (Samyang makes no weather-sealing claim) |
| Sony FE 24mm f/2.8 G | 162g | Weather-sealed |
| Sony FE 28-60mm f/4-5.6 | 167g | Not verified (weight from Sony product code SEL-2860; sealing not stated on the source page) |
| Sony FE 40mm f/2.5 G | 173g | Not verified |
| Sony FE 50mm f/2.5 G | 174g | Not verified |
| Sony FE 28-70mm f/3.5-5.6 OSS II | 293g | Not verified (weight from Sony product code SEL-28702; sealing not stated on the source page) |
| Sony FE 28-70mm f/3.5-5.6 OSS | 295g | Not verified (weight from Sony product code SEL-2870; sealing not stated on the source page) |
| Tamron 20-40mm f/2.8 Di III VXD | 365g | Weather-sealed |
| Sony FE 16-25mm f/2.8 G | 409g | Weather-sealed |
| Sony Vario-Tessar T* FE 24-70mm f/4 ZA OSS | 426g | Not verified (weight from Sony product code SEL-2470Z; sealing not stated on the source page) |
| Sony FE 24-50mm f/2.8 G | 440g | Not verified (weight from Sony product code SEL-2450G; sealing not stated on the source page) |
| Sony FE 20-70mm f/4 G | 488g | Weather-sealed |
| Sony Vario-Tessar T* FE 16-35mm f/4 ZA OSS | 518g | Not verified (weight from Sony product code SEL-1635Z; sealing not stated on the source page) |
| Sony FE 24-105mm f/4 G OSS | 663g | Not verified |
| Sony FE 24-240mm f/3.5-6.3 OSS | 780g | Not verified (weight from Sony product code SEL-24240; sealing not stated on the source page) |
| Sony FE 70-200mm f/4 G OSS | 840g | Not verified (weight from Sony product code SEL-70200G; sealing not stated on the source page) |
| Sony FE 70-300mm f/4.5-5.6 G OSS | 854g | Not verified |
| Sigma 100-400mm f/5-6.3 DG DN OS | 1135g | Mount gasket only |
| Tamron 150-500mm f/5-6.7 Di III VC VXD | 1725g | Weather-sealed |
Packing light? The lightest here is the Viltrox AF 20mm f/2.8 at 157g. The lightest weather-sealed option is the Sony FE 24mm f/2.8 G at 162g.
Complete the kit for the Sony a7 III
- The Samyang AF 45mm f/1.8 FE takes 49mm front filters. One 49mm set (polariser, ND) also fits every other 49mm lens you add later — see which ones. 49mm filters on Amazon →
- The Sony a7 III takes an NP-FZ100 battery (Memory Stick, SD cards) — a spare battery and the right card class are body-specific, not lens-specific. NP-FZ100 battery on Amazon →
FAQ
What is the best travel lens for the Sony a7 III?
Samyang AF 45mm f/1.8 FE (45mm f/1.8) is the standout travel option that fits the Sony a7 III. 20 travel Sony E lenses fit in total — compare them below.
Do these travel lenses fit the Sony a7 III?
Yes — every lens here is a Sony E mount lens, so it fits the Sony a7 III and covers its full-frame sensor.
What is the lightest travel lens for the Sony a7 III?
The Viltrox AF 20mm f/2.8 at 157g (manufacturer-published weight). The lightest weather-sealed option is the Sony FE 24mm f/2.8 G at 162g. Weights for 20 of the 20 lenses on this page are in the weight table above.
Already own the Sony a7 III, shopping for a spare or an upgrade? Sony a7 III on Amazon →
All lenses for the Sony a7 III · the same use across mounts: Travel lenses for Sony E · all cameras