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Lens Description: The Canon EF 16-35mm f/2.8L II USM is a high performance, water-resistant, and ultra wide-angle Canon L-series lens. It has been specifically designed for improved edge-to-edge image quality that will meet the strict requirements of professional and high-end amateur photographers. It features 3 high-precision aspherical lens elements, each of a different type: ground, replica and GMo for even better image quality than the original EF 16-35mm f/2.8L USM. The circular aperture produces a beautiful and natural background blur when shooting at wider apertures. Other features include internal focusing, a ring type USM (Ultra Sonic Monitor), and new AF algorithms for fast and quiet autofocusing.
Canon EF 16-35mm f/2.8L II USM Specifications
| Lens Specifications | |
|---|---|
| * Supplied accessories may differ depending on country or area | |
| Lens Type | Zoom Lens |
| Focal Length | 16-35mm |
| Mount Type | Canon EF |
| Format | Full Frame / FX |
| Compatible Format(s) | 35mm Film |
| Compatible with Teleconverters | No |
| Zoom Ratio | 2.18x |
| Maximum Reproduction Ratio | 0.22x |
| Image Stabilizer (Image Stabilization) | No |
| Aperture Information | |
| Aperture Ring | No |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/22 |
| Maximum Angle of View (Full Frame format) | 108° |
| Optical Information | |
| Lens Elements | 16 |
| Lens Groups | 12 |
| Diaphragm Blades | 7 |
| Extra-Low Dispersion Glass Elements | 2 |
| Aspherical Elements | 3 |
| SWC (SubWavelength Structure Coating) | No |
| Super Spectra Coating | Yes |
| Focus Information | |
| Focus | Autofocus |
| Built-in Focus Motor | Yes |
| UltraSonic Motor (USM) | Yes |
| Internal Focusing | Yes |
| Minimum Focus Distance | 0.28m |
| Distance Information | Yes |
| Filter Information | |
| Filter Size | 82mm |
| Accepts Filter Type | Screw-on |
| Physical Characteristics | |
| Weather / Dust Sealing | Yes |
| Mount Material | Metal |
| Tripod Collar | No |
| Dimensions | 88.5 x 111.6mm |
| Weight | 635g |
| Other Information | |
| Available in Colors | Black |
| Supplied Accessories | 01/01/1900 |
Lens Construction
MTF Chart
I upgraded to this lens from the 17-40mm F4 lens. Is it worth the price difference? Probably not.
Good things: Sharpness is better than the 17-40 towards the corners, especially at F11, chromatic aberration is better than the 17-40, F2.8 can be useful
Not so good things: No sharper than the 17-40, 82 mm filter size can be expensive
If you have the 17-40 and are happy, probably best to stick with it.