# 500美元以下，哪款单反镜头性价比最高？ — 经过验证的规格比较

> 所有规格数据均已通过官方渠道验证。

Which SLR lens offers the best value for money under $500?

## 产品列表

### Canon EF 50mm f/1.8 STM
```yaml
product: canon-ef-50mm-f-1-8-stm
brand: Canon
price_gbp: 124.98
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
aperture: f/1.8
focal_length: 50mm
number_of_elements: 6
image_stabilization: false
maximum_magnification: 0.21x
minimum_focus_distance: 0.35m
```

- **价格:** £124.98 [^1]
- **概述:** This compact 50mm prime lens has a bright f/1.8 aperture for low-light shooting and shallow depth of field. Its STM autofocus motor provides smooth, near-silent focusing, making it suitable for portraits, everyday photography, and video on Canon EF-mount SLR cameras.
- **最适合:** 凭借明亮的f/1.8光圈、0.21x放大倍率、0.35m最近对焦距离、六片镜片设计，以及价格适中的平滑STM自动对焦功能，它在500美元以下具有很高的性价比。
- **附加来源:** [^2], [^3]

### Canon EF 75-300mm f/4-5.6 III
```yaml
product: canon-ef-75-300mm-f-4-5-6-iii
brand: Canon
price_gbp: 176.74
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
aperture: f/4 to 5.6
focal_length: 75 to 300mm
number_of_elements: 13
image_stabilization: false
maximum_magnification: 0.25x
minimum_focus_distance: 1.5 m
```

- **价格:** £176.74 [^4]
- **概述:** This compact telephoto zoom covers 75 to 300mm and uses a DC micro motor for autofocus. It suits Canon DSLR users who want affordable reach for portraits, outdoor sports, wildlife, and daylight telephoto photography.
- **最适合:** 它以相对较低的价格提供300mm焦距、0.25倍放大倍率和480g轻量化设计，在500美元以下具有很高的性价比，但不具备图像稳定功能。

### Tokina atx-i 11-20mm f/2.8 CF for Nikon F
```yaml
product: tokina-atx-i-11-20mm-f-2-8-cf-for-nikon-f
brand: Tokina
price_gbp: 295.07
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
aperture: f/2.8
focal_length: 11-20mm
number_of_elements: 14
image_stabilization: false
maximum_magnification: 0.12x
minimum_focus_distance: 11in
```

- **价格:** £295.07 [^5]
- **概述:** This APS-C ultra-wide zoom offers an 11-20mm range and a constant f/2.8 aperture for landscapes, architecture, interiors, and astrophotography. Its 14-element optical design, aspherical and low-dispersion elements, internal focusing, and focus clutch provide strong image quality and flexible operation.
- **最适合:** 售价为 399.00 美元，在 500 美元以内具有很高的性价比；它配备恒定 f/2.8 光圈、灵活的 11-20mm 焦段范围、0.12x 放大倍率和 14 片镜片组成的光学设计，适合在弱光环境下进行广角拍摄。
- **附加来源:** [^6]

---
## 参考来源
[^1]: B&H Photo Video, 访问日期 2026-09-13. https://www.bhphotovideo.com/c/product/1143786-REG/canon_0570c002_ef_50mm_f_1_8_stm.html
[^2]: Adorama, 访问日期 2026-09-13. https://www.adorama.com/canon-ef-50-mm-f-1-8-stm-lens/p/ca5018stm
[^3]: Best Buy, 访问日期 2026-09-13. https://www.bestbuy.com/product/canon-ef50mm-f1-8-stm-standard-prime-lens-for-eos-dslr-cameras-black/J7C86SLPV4
[^4]: B&H Photo, 访问日期 2026-09-13. https://www.bhphotovideo.com/c/product/169267-USA/Canon_6473A003AA_75_300mm_f_4_0_5_6_III_Autofocus.html
[^5]: B&H Photo, 访问日期 2026-09-13. https://www.bhphotovideo.com/c/product/1571175-REG/tokina_atx_i_af120cfn_atx_i_11_20mm_f_2_8_cf.html
[^6]: Adorama, 访问日期 2026-09-13. https://www.adorama.com/tokina-atx-i-11-20-mm-cf-f-2-8-lens-nikon/p/tn1120nk