Full Frame vs. APS-C Focal Length
See how the same lens frames a scene on full frame and APS-C, or find the APS-C lens needed to match a familiar full-frame field of view. The preset compares a 35mm lens at 1×, 1.5× and 1.6×.
Compare the same lens on full frame and APS-C
Change any focal length or crop factor to compare the resulting field of view.
- Lens A: 35mm
- Lens B: 52.5mm
- Lens C: 56mm
Sony α7, Nikon Z6/Z8, Canon EOS R, Panasonic S, Leica SL
Sony α6000 series, Nikon Z50/Zfc, Fujifilm X-series
Canon EOS R7, R10, R50, EOS M
Where your lenses land
How the conversion works
Using the same lens, APS-C captures a narrower field of view than full frame. Multiply the lens focal length by 1.5 for most Nikon, Sony and Fujifilm APS-C cameras, or by 1.6 for Canon APS-C.
To match a full-frame field of view on APS-C, divide the full-frame focal length by the crop factor. This reverse conversion is useful when moving between camera systems.
Full-frame focal length ÷ crop factor = APS-C focal length for similar framing
Focal length conversion table
| Full-frame field of view | APS-C lens at 1.5× | Canon APS-C lens at 1.6× |
|---|---|---|
| 16mm | 10.7mm | 10mm |
| 24mm | 16mm | 15mm |
| 35mm | 23.3mm | 21.9mm |
| 50mm | 33.3mm | 31.3mm |
| 85mm | 56.7mm | 53.1mm |
| 200mm | 133.3mm | 125mm |
The table gives mathematical equivalents. The nearest lens you can buy may use a slightly different standard focal length.
Worked example: matching a 50mm full-frame view
To match a 50mm lens on full frame, use about 33mm on a 1.5× APS-C camera (50 ÷ 1.5 = 33.3) or about 31mm on a Canon 1.6× camera (50 ÷ 1.6 = 31.25). Common 32mm, 33mm or 35mm lenses will give a close—not always exact—match.