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Canon EF 17-40mm F/4L USM Lens
Model Specifications
| Brand | Canon | Model | EF 17-40mm F/4L USM |
|---|---|---|---|
| Mount | Canon EF | Max FLM | 1X |
| Focal Range | 17 - 40mm | View Angle | 104 - 57° |
| Max Aperture | F4 | Min Aperture | F22 |
| Min Focus | 28cm | Magnification | 0.24X |
| Filter Size | 77mm | Aperture Blades | |
| Size (D x L) | 84 x 97mm | Weight | 500g |
| Tilt | N / A | Shift | N / A |
| Stabilization | No | Protection | Weatherproof |
| Zoom Mechanism | Internal | Focus Mechanism | Internal |
| Focus Motor | Super Sonic | Focus Drive | AF with quick-shift |
| Hood | Bayonet | Features | Rear gelatin filter holder. |
| Perspective | Rectilinear | Introduced |
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Canon 17-40mm F4 Facts
Weatherproof - Seals protect from dust, humidity and light splashing.
Zoom Lens
Rectilinear are normal lenses that show straight lines as straight lines.| 17-40mm Focal-Range | F4 Constant Aperture |
| 77mm Filter Thread | AF with quick-shift |
| Canon EF Mount | 1 Max Crop-Factor |
| 500g Lens Weight | 84 x 97mm (D x L) |
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