Canon FL refers to a lens mount standard for 35mm single-lens reflex cameras from Canon. It was introduced in April 1964 with the Canon FX camera, replacing the previous Canon R lens mount. The FL mount was in turn replaced in 1971 by the Canon FD lens mount. FL lenses can also be used on FD-mount cameras.
Many mirrorless interchangeable-lens cameras are able to use Canon FL lenses via an adapter.
| Wide angle lenses | ||||||||||
| 19 | FL 19mm f/3.5 | 9/7 | (0.044×) | 58 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| FL 19mm f/3.5R | 11/9 | (0.048×) | Ser. IX | |||||||
| 28 | FL 28mm f/3.5 | 7/7 | (0.09×) | 58 | ||||||
| 35 | FL 35mm f/2.5 | 7/5 | (0.115×) | 58 | ||||||
| FL 35mm f/3.5 | 6/6 | (0.106×) | 48 | |||||||
| 38 | FLP 38mm f/2.8 | 4/3 | (0.054×) | 48 | ||||||
| Normal lenses | ||||||||||
| 50 | FL 50mm f/1.4 | 6/4 | (0.103×) | 58 | ||||||
| FL 50mm f/1.4 I | 6/5 | (0.103×) | 58 | |||||||
| FL 50mm f/1.4 II | 7/6 | (0.101×) | 58 | |||||||
| FL 50mm f/1.8 I | 6/4 | (0.104×) | 48 | |||||||
| FL 50mm f/1.8 II | 6/4 | (0.103×) | 48 | |||||||
| FL 50mm f/3.5 Macro | 4/3 | (0.5×) | 58 | |||||||
| 55 | FL 55mm f/1.2 | 8/7 | (0.109×) | 58 | ||||||
| 58 | FL 58mm f/1.2 I | 7/5 | (0.117×) | 58 | ||||||
| FL 58mm f/1.2 II | 7/5 | (0.117×) | 58 | |||||||
| Telephoto lenses | ||||||||||
| 85 | FL 85mm f/1.8 | 5/4 | (0.101×) | 58 | ||||||
| 100 | FL 100mm f/3.5 | 5/4 | (0.101×) | 48 | ||||||
| FL M 100mm f/4 | 5/3 | 48 | ||||||||
| 135 | FL 135mm f/2.5 | 6/4 | (0.106×) | 58 | ||||||
| FL 135mm f/3.5 | 4/3 | (0.094×) | 48 | |||||||
| 200 | FL 200mm f/3.5 I | 7/5 | (0.095×) | 58 | ||||||
| FL 200mm f/3.5 II | 7/5 | (0.095×) | 58 | |||||||
| FL 200mm f/4.5 | 5/4 | (0.094×) | 48 | |||||||
| 300 | FL 300mm f/2.8 S.S.C. Fluorite | 6/5 | (0.103×) | |||||||
| FL-F 300mm f/5.6 | 7/6 | (0.091×) | 58 | |||||||
| 400 | 400mm f/4.5 | 5/4 | (0.111×) | 48 | ||||||
| 500 | FL-F 500mm f/5.6 | 6/5 | (0.059×) | 95 | ||||||
| 600 | 600mm f/5.6 | 6/5 | (0.07×) | 48 | ||||||
| 800 | 800mm f/8 | 7/5 | (0.051×) | 48 | ||||||
| 1200 | 1200mm f/11 | 7/5 | (0.032×) | 48 | ||||||
| Zoom lenses | ||||||||||
| 55–135 | FL 55-135mm f/3.5 | 13/10 | (0.08×) | 58 | ||||||
| 85–300 | FL 85-300mm f/5 | 15/9 | (0.085×) | 72 | ||||||
| 100–200 | FL 100-200mm f/5.6 | 8/5 | (0.092×) | 55 | ||||||
| Teleconverters | ||||||||||
| 2× | Extender 2× | 2× | 5/5 |
The list is complete.