Best compact lenses for the Sony a9 II
12 compact lenses that fit the Sony a9 II (Sony E mount) — small and light enough to carry all day without a bag. Sorted brightest-aperture first; every spec from the manufacturer's catalog.
Start with the Samyang AF 35mm f/1.8 FE. At f/1.8 it is the brightest of the 12 compact Sony E lenses that fit the Sony a9 II — the full comparison is below.
Check the Samyang AF 35mm f/1.8 FE price on Amazon →
One limit of this table: it lists only Sony E lenses that mount natively on the Sony a9 II — lenses fitted through an adapter are not included here. See which mounts adapt to which.
Weight & weather sealing on the Sony a9 II
On long approaches the decision is often made by weight, not aperture. Published weights for 11 of the 12 lenses above (the other 1 has no verified weight in our dataset yet — omitted, never estimated):
| Lens | Weight | Weather sealing |
|---|---|---|
| 7Artisans AF 40mm f/2.5 Lite | 90g | None claimed |
| Samyang AF 35mm f/1.8 FE | 120g | Weather-sealed |
| Sony Sonnar T* FE 35mm f/2.8 ZA | 120g | Not verified (weight from Sony product code SEL-35F28Z; sealing not stated on the source page) |
| Viltrox AF 26mm f/2.8 EVO | 130g | Mount gasket only |
| 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) |
| Viltrox AF 40mm f/2.5 | 167g | Not verified |
| 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) |
| Samyang AF 75mm f/1.8 FE | 230g | None claimed (Samyang makes no weather-sealing claim) |
| 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 24-50mm f/2.8 G | 440g | Not verified (weight from Sony product code SEL-2450G; sealing not stated on the source page) |
Packing light? The lightest here is the 7Artisans AF 40mm f/2.5 Lite at 90g. The lightest weather-sealed option is the Samyang AF 35mm f/1.8 FE at 120g.
Complete the kit for the Sony a9 II
- The Samyang AF 35mm f/1.8 FE takes 58mm front filters. One 58mm set (polariser, ND) also fits every other 58mm lens you add later — see which ones. 58mm filters on Amazon →
- Batteries, cards, a strap and a bag are specific to the Sony a9 II rather than to the lens. Sony a9 II accessories on Amazon →
FAQ
What is the best compact lens for the Sony a9 II?
Samyang AF 35mm f/1.8 FE (35mm f/1.8) is the standout compact option that fits the Sony a9 II. 12 compact Sony E lenses fit in total — compare them below.
Do these compact lenses fit the Sony a9 II?
Yes — every lens here is a Sony E mount lens, so it fits the Sony a9 II and covers its full-frame sensor.
What is the lightest compact lens for the Sony a9 II?
The 7Artisans AF 40mm f/2.5 Lite at 90g (manufacturer-published weight). The lightest weather-sealed option is the Samyang AF 35mm f/1.8 FE at 120g. Weights for 11 of the 12 lenses on this page are in the weight table above.
Already own the Sony a9 II, shopping for a spare or an upgrade? Sony a9 II on Amazon →
All lenses for the Sony a9 II · the same use across mounts: Compact lenses for Sony E · all cameras