Focal lengths / APS-C
18mm on APS-C
Frames like 27mm on full frame: 66.3° across, 46.9° top to bottom.
A 27mm eq.
| A 18mm on APS-C | |
|---|---|
| Focal length | 18mm |
| Full-frame equivalent | 27mm |
| Horizontal | 66.3° |
| Vertical | 46.9° |
| Diagonal | 76.2° |
| Sensor | APS-C 23.5 × 15.6 mm |
| Crop factor | ×1.5 |
| Aspect ratio | 3:2 |
Same framing on other formats
The focal length that matches 27mm full-frame equivalent on each sensor size (crop-factor convention, diagonal).
| Sensor | Focal length | Closest page |
|---|---|---|
| Medium format | 34.2mm | 38mm on Medium format |
| Full frame | 27mm | 26mm on Full frame |
| APS-C (Canon) | 16.9mm | 16mm on APS-C (Canon) |
| Micro Four Thirds | 13.5mm | 14mm on Micro Four Thirds |
| 1-inch | 10mm | 10mm on 1-inch |
Primes at 18mm for APS-C (5)
| Lens | Focal | Aperture | Mount | Year |
|---|---|---|---|---|
| 7Artisans AF 18mm f/2 (E) | 18mm | f/2 | Sony E | 2026 |
| Fujifilm XF 18mm f/2 R | 18mm | f/2 | Fujifilm X | 2012 |
| Fujifilm XF 18mm f/1.4 R LM WR | 18mm | f/1.4 | Fujifilm X | 2021 |
| Leica Elmarit-TL 18mm f/2.8 ASPH. | 18mm | f/2.8 | L-Mount | 2017 |
| Voigtländer Color-Skopar 18mm f/2.8 Aspherical (X) | 18mm | f/2.8 | Fujifilm X | 2024 |
Zooms that reach 18mm (62)
| Lens | Focal | Aperture | Mount | Year |
|---|---|---|---|---|
| Fujifilm XF 10-24mm f/4 R OIS | 10–24mm | f/4 | Fujifilm X | 2013 |
| Fujifilm XF 10-24mm f/4 R OIS WR | 10–24mm | f/4 | Fujifilm X | 2020 |
| Fujifilm XC 13-33mm f/3.5-6.3 OIS | 13–33mm | f/3.5–6.3 | Fujifilm X | 2025 |
| Fujifilm XC 15-45mm f/3.5-5.6 OIS PZ | 15–45mm | f/3.5–5.6 | Fujifilm X | 2018 |
| Fujifilm XF 16-50mm f/2.8-4.8 R LM WR | 16–50mm | f/2.8–4.8 | Fujifilm X | 2024 |
| Fujifilm XF 16-55mm f/2.8 R LM WR | 16–55mm | f/2.8 | Fujifilm X | 2015 |
| Fujifilm XF 16-55mm f/2.8 R LM WR II | 16–55mm | f/2.8 | Fujifilm X | 2024 |
| Fujifilm XF 16-80mm f/4 R OIS WR | 16–80mm | f/4 | Fujifilm X | 2019 |
| Fujifilm XC 16-50mm f/3.5-5.6 OIS II | 16–50mm | f/3.5–5.6 | Fujifilm X | 2015 |
| Fujifilm XF 18-55mm f/2.8-4 R LM OIS | 18–55mm | f/2.8–4 | Fujifilm X | 2012 |
| Fujifilm XF 18-120mm f/4 LM PZ WR | 18–120mm | f/4 | Fujifilm X | 2022 |
| Fujifilm XF 18-135mm f/3.5-5.6 R LM OIS WR | 18–135mm | f/3.5–5.6 | Fujifilm X | 2014 |
| Laowa 12-24mm f/5.6 Zoom Shift CF (E) | 12–24mm | f/5.6 | Sony E | 2024 |
| Laowa 12-24mm f/5.6 Zoom Shift CF (L) | 12–24mm | f/5.6 | L-Mount | 2024 |
| Laowa 12-24mm f/5.6 Zoom Shift CF (X) | 12–24mm | f/5.6 | Fujifilm X | 2024 |
| Laowa 12-24mm f/5.6 Zoom Shift CF (Z) | 12–24mm | f/5.6 | Nikon Z | 2024 |
| Leica Super-Vario-Elmar-TL 11-23mm f/3.5-4.5 ASPH. | 11–23mm | f/3.5–4.5 | L-Mount | 2014 |
| Leica Vario-Elmar-TL 18-56mm f/3.5-5.6 ASPH. | 18–56mm | f/3.5–5.6 | L-Mount | 2014 |
| Nikon Z DX 12-28mm f/3.5-5.6 PZ VR | 12–28mm | f/3.5–5.6 | Nikon Z | 2023 |
| Nikon Z DX 16-50mm f/3.5-6.3 VR | 16–50mm | f/3.5–6.3 | Nikon Z | 2019 |
| Nikon Z DX 16-50mm f/2.8 VR | 16–50mm | f/2.8 | Nikon Z | 2025 |
| Nikon Z DX 18-140mm f/3.5-6.3 VR | 18–140mm | f/3.5–6.3 | Nikon Z | 2021 |
| Sigma 10-18mm f/2.8 DC DN | C (E) | 10–18mm | f/2.8 | Sony E | 2023 |
| Sigma 16-300mm f/3.5-6.7 DC OS | C (E) | 16–300mm | f/3.5–6.7 | Sony E | 2025 |
| Sigma 17-40mm f/1.8 DC | A (E) | 17–40mm | f/1.8 | Sony E | 2025 |
| Sigma 18-50mm f/2.8 DC DN | C (E) | 18–50mm | f/2.8 | Sony E | 2021 |
| Sigma 10-18mm f/2.8 DC DN | C (L) | 10–18mm | f/2.8 | L-Mount | 2023 |
| Sigma 16-300mm f/3.5-6.7 DC OS | C (L) | 16–300mm | f/3.5–6.7 | L-Mount | 2025 |
| Sigma 17-40mm f/1.8 DC | A (L) | 17–40mm | f/1.8 | L-Mount | 2025 |
| Sigma 18-50mm f/2.8 DC DN | C (L) | 18–50mm | f/2.8 | L-Mount | 2021 |
| Sigma 10-18mm f/2.8 DC DN | C (X) | 10–18mm | f/2.8 | Fujifilm X | 2023 |
| Sigma 16-300mm f/3.5-6.7 DC OS | C (X) | 16–300mm | f/3.5–6.7 | Fujifilm X | 2025 |
| Sigma 17-40mm f/1.8 DC | A (X) | 17–40mm | f/1.8 | Fujifilm X | 2025 |
| Sigma 18-50mm f/2.8 DC DN | C (X) | 18–50mm | f/2.8 | Fujifilm X | 2022 |
| Sigma 16-300mm f/3.5-6.7 DC OS | C (Z) | 16–300mm | f/3.5–6.7 | Nikon Z | 2026 |
| Sony E 10-18mm f/4 OSS | 10–18mm | f/4 | Sony E | 2012 |
| Sony E PZ 10-20mm f/4 G | 10–20mm | f/4 | Sony E | 2022 |
| Sony E PZ 16-50mm f/3.5-5.6 OSS II | 16–50mm | f/3.5–5.6 | Sony E | 2024 |
| Sony E PZ 16-50mm f/3.5-5.6 OSS | 16–50mm | f/3.5–5.6 | Sony E | 2012 |
| Sony E 16-55mm f/2.8 G | 16–55mm | f/2.8 | Sony E | 2019 |
| Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS | 16–70mm | f/4 | Sony E | 2013 |
| Sony E PZ 18-105mm f/4 G OSS | 18–105mm | f/4 | Sony E | 2013 |
| Sony E PZ 18-110mm f/4 G OSS | 18–110mm | f/4 | Sony E | 2016 |
| Sony E 18-135mm f/3.5-5.6 OSS | 18–135mm | f/3.5–5.6 | Sony E | 2018 |
| Sony E 18-55mm f/3.5-5.6 OSS | 18–55mm | f/3.5–5.6 | Sony E | 2010 |
| Sony E 18-200mm f/3.5-6.3 OSS | 18–200mm | f/3.5–6.3 | Sony E | 2010 |
| Sony E 18-200mm f/3.5-6.3 OSS LE | 18–200mm | f/3.5–6.3 | Sony E | 2012 |
| Sony E PZ 18-200mm f/3.5-6.3 OSS | 18–200mm | f/3.5–6.3 | Sony E | 2012 |
| Tamron 11-20mm f/2.8 Di III-A RXD (E) | 11–20mm | f/2.8 | Sony E | 2021 |
| Tamron 16-50mm f/2.8 A (E) | 16–50mm | f/2.8 | Sony E | 2026 |
| Tamron 17-70mm f/2.8 Di III-A VC RXD (E) | 17–70mm | f/2.8 | Sony E | 2020 |
| Tamron 18-200mm f/3.5-6.3 Di III VC (E) | 18–200mm | f/3.5–6.3 | Sony E | 2011 |
| Tamron 18-300mm f/3.5-6.3 Di III-A VC VXD (E) | 18–300mm | f/3.5–6.3 | Sony E | 2021 |
| Tamron 11-20mm f/2.8 Di III-A RXD (X) | 11–20mm | f/2.8 | Fujifilm X | 2023 |
| Tamron 16-50mm f/2.8 A (X) | 16–50mm | f/2.8 | Fujifilm X | 2026 |
| Tamron 17-70mm f/2.8 Di III-A VC RXD (X) | 17–70mm | f/2.8 | Fujifilm X | 2022 |
| Tamron 18-300mm f/3.5-6.3 Di III-A VC VXD (X) | 18–300mm | f/3.5–6.3 | Fujifilm X | 2021 |
| Tamron 16-50mm f/2.8 A (Z) | 16–50mm | f/2.8 | Nikon Z | 2026 |
| Tamron 17-70mm f/2.8 Di III-A VC RXD (Z) | 17–70mm | f/2.8 | Nikon Z | 2026 |
| Tamron 18-300mm f/3.5-6.3 Di III-A VC VXD (Z) | 18–300mm | f/3.5–6.3 | Nikon Z | 2025 |
| Tokina atx-m 11-18mm f/2.8 E | 11–18mm | f/2.8 | Sony E | 2022 |
| Tokina atx-m 11-18mm f/2.8 X | 11–18mm | f/2.8 | Fujifilm X | 2025 |