2026 年该买哪支镜头：Sony E、Fujifilm X 与 Canon RF 对比
镜头购买指南 · Sony E · Fujifilm X · Canon RF · 新加坡 / 英国 / 澳大利亚 2026
简短结论：先买一支标准变焦镜头（28-70 或 24-70 F2.8），再买一支定焦镜头（35mm 或 85mm）；如果你旅行时只带一支镜头，选 28-200；如果想用一支镜头覆盖人像拍摄，选 35-150 F2-2.8。下文介绍二十三支镜头，并以四种货币标价。
快速推荐
- 性价比最高的标准变焦镜头： Sigma 28-70mm F2.8 DG DN
- 适合商业拍摄的标准变焦镜头： Sigma 24-70mm F2.8 DG DN
- 旅行单镜头： Tamron 28-200mm
- 一镜拍人像： Tamron 35-150mm F2-2.8
- 性价比最高的大光圈定焦镜头： Sigma 56mm F1.4 DC DN
- 星空摄影： Sigma 14mm F1.4 DG DN Art
首先要确定的三件事
1. 你的卡口
Sony E、Fujifilm X、Canon RF 和 Nikon Z 镜头之间无法通用。购买前务必先确认卡口——这是最基本的一步，也是最容易被忽略的一步。
2. 等效焦距
在 APS-C 画幅上，将焦距乘以 1.5。Fuji 23mm 相当于 35mm，35mm 相当于 52mm，而 56mm 相当于 84mm。全画幅机身则直接使用镜头标注的焦距。
3. 你实际拍摄的题材
风光摄影需要广角（14-24mm），纪实摄影需要 35mm，人像摄影需要 85-135mm，运动摄影需要 200mm 及以上。先确定用途，再确定焦距，最后比较具体型号。
Sony E 卡口（全画幅和 APS-C）
Fujifilm X mount (APS-C)
Fuji's strength is primes: aperture rings and controls that match the body. Sigma's DC DN line gives Fuji shooters a genuinely cheap fast prime.
Canon RF mount
Third-party choice is thin on RF. First-party glass is excellent and expensive. The telephoto we currently stock is the RF100-400mm.
By use
Portraits
On a budget: Sigma 56mm F1.4 - an 84mm equivalent for very little. For professional separation: Sigma 85mm F1.4 DG DN Art. If you do not want to change lenses: Tamron 35-150mm F2-2.8 covers full body to headshot in one barrel.
Travel
One lens only: Tamron 28-200mm, which covers wide to telephoto but is slow at night. For quality: Sigma 28-70mm F2.8.
Landscape
Ultra-wide: Tamron 17-50mm F4. Astro: Sigma 14mm F1.4 - a fast ultra-wide is the whole game for the Milky Way. Compression: Tamron 150-500mm.
Sport and wildlife
Tamron 70-180mm F2.8 G2 or Sigma 100-400mm. For more reach, add the 2x teleconverter, but confirm compatibility first.
Buying from Hong Kong: what to expect
Lenses ship from Hong Kong. Singapore 5-9 working days, UK 6-10, Australia 7-12. Warranty is a Hong Kong shop warranty: we service locally, you cover return freight, and the round trip is 2-4 weeks. Lens failure rates are low, which is why most overseas buyers take the parallel-import price rather than the local distributor price.
None of these need a voltage adapter - they are passive optics. If you are also buying a body or a charger, read our travel adapter guide: Singapore and the UK use the same Type G plug as Hong Kong, and Australia only needs a Type I adapter.
Questions we get asked
Can I use a full-frame lens on an APS-C body?
Yes. Sony FE lenses mount on APS-C bodies with a 1.5x crop (a 28mm behaves like 42mm). The reverse also works: an APS-C-only lens such as a Sigma DC DN on a full-frame body drops into crop mode and takes a resolution hit.
How far behind are third-party lenses now?
Optically, very close - several Sigma and Tamron designs match or beat first-party sharpness. The differences are autofocus speed, stabilisation co-operation, in-camera correction profiles and weather sealing. For paid work, first-party is the safer bet; for everything else, third-party is clearly better value.
What is "equivalent focal length"?
APS-C sensors are smaller, so the angle of view matches a 1.5x longer lens on full-frame. A Fuji 23mm looks like a 35mm, and a 56mm like an 85mm. Do this conversion before you buy or you will buy the wrong focal length.
Is a constant F2.8 zoom worth the money?
Yes if you shoot indoors or at dusk regularly. An F2.8 zoom is still F2.8 at the long end, which is one to two stops over an F3.5-5.6 kit lens - often the difference between getting the shot and not.
Prime or zoom first?
Buy a zoom first, a prime second. The zoom solves "can I get it in frame", the prime solves "does it look good". The shallow depth and low-light ability of an F1.4 prime is something no zoom can give you.
Do teleconverters work on every lens?
No. They fit specific first-party telephotos, they reduce the aperture (a 2x turns F2.8 into F5.6) and they slow autofocus. Check the compatibility list before buying.
Is there a warranty on parallel-import lenses?
Yes, our shop warranty. Lens failure rates are far lower than body failure rates, so the price advantage of parallel import is usually worth taking.
What should I check when buying a lens?
Focus should be smooth and quiet, the aperture blades free of oil, the glass free of fungus and scratches, and the zoom ring even in resistance. The shop will let you check all four.
Before you buy
- Mount confirmed (Sony E / Fuji X / Canon RF / Nikon Z)
- Equivalent focal length worked out for your sensor
- Filter thread checked, and filter cost counted in
- First-party versus third-party compared on price and weight
- Teleconverter compatibility confirmed, if relevant
- Warranty type understood: distributor or shop warranty
Focal length, aperture and mount are taken from the product name. Hong Kong prices are read live from our product pages; SGD, GBP and AUD are converted at the rate published on 28 October 2026 and exclude shipping, duties and taxes. APS-C equivalents use a 1.5x factor.