Comparison of Pentax 11-18mm f/2.8 ED DC AW HD DA* and Sony FE 16-35mm f/2.8 GM SEL1635GM [S]ave
| Attribute |  Pentax 11-18mm f/2.8 ED DC AW HD DA* × |  Sony FE 16-35mm f/2.8 GM SEL1635GM × |
|---|---|---|
| Aperture (f) | 2.80 - 22.00 | 2.80 - 22.00 |
| Filter Size (mm) | 82 | 82 |
| Notes | Dustproof, weather-resistant construction; Features latest lens coatings. | Sony E-mount; Dust and moisture resistant; Includes ALC-SH149 Petal-shaped lens hood. |
| Closest Focus (m) | 0.3 | 0.28 |
| Magnification Ratio (x) | 0.1 | 0.19 |
| Zoom System | Rotary | Rotary |
| Type | Wide Zoom | Wide Zoom |
| APS Equivalent | 17 - 27.5mm | 24 - 52.5mm |
| Diaphragm Blades | 9 | 11 |
| Image Circle | APS-C | 35mm (Full-frame E-Mount) |
| Focal Length (mm) | 11.00 - 18.00 | 16.00 - 35.00 |
| Brand | Pentax | Sony |
| Name | Pentax 11-18mm f/2.8 ED DC AW HD DA* | Sony FE 16-35mm f/2.8 GM SEL1635GM |
| Weight (g) | 704 | 680 |
| Diaphragm Blades Type | rounded | circular |
| Lens Construction | 16 elements in 11 groups | 16 elements in 13 groups, including 3 aspherical, 2 XA (extreme aspherical) and 2 ED elements; Nano AR coating; Fluorine coating on the front element |
| Diagonal Angle of View (degree) | 76.00 - 104.00 | 63.00 - 107.00 |
| Length (mm) | 100 | 121.6 |
| Diameter (mm) | 90 | 88.5 |
| Focus Details | AF with DC motor; Focus Clamp Mechanism; AF/MF switch | Internal; Two DDSSM (Direct Drive Super Sonic wave Motor) actuators with Focus Hold button and AF/MF switch |
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