Lens models are any interchangeable lens that has been marketed
 
    | Manufacturer | Canon   | 
| Model | 400mm f/4.5 I | 
| Mount | M39 (LTM) | 
| Marketed | 1956 69 years ago | 
| Zoom | |
| Focal length | 400mm | 
| Aperture | f/4.5-22.0 | 
| Closest focus | 8.00m | 
| Elements/Groups | 5/4 | 
| Negative size | 35mm | 
| Autofocus | |
| Weight | 4000g | 
| Length | 297mm | 
| Diameter | 105mm | 
| Filter thread | 36.5mm | 
| Link | https://global.canon/en/c-museum/product/s65.html | 
| Sharing |  | 
        
        
        
        
        
        
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