Comparison of Pentax 17-70mm ƒ/4 AL IF SDM SMC DA and Sony E 16-55mm f/2.8 G SEL1655G [S]ave
| Attribute |  Sony E 16-55mm f/2.8 G SEL1655G × |  Pentax 17-70mm ƒ/4 AL IF SDM SMC DA × |
|---|---|---|
| Aperture (f) | 2.80 - 22.00 | 4.00 - 22.00 |
| Filter Size (mm) | 67 | 67 |
| Notes | Sony E-mount; Dust and moisture resistant; Includes ALC-SH161 Petal-shaped lens hood. | Included Accessories: Lens Hood |
| Closest Focus (m) | 0.33 | 0.28 |
| Magnification Ratio (x) | 0.66 | 0.31 |
| Diameter (mm) | 73 | 75 |
| Type | Standard Zoom | Standard Zoom |
| APS Equivalent | 24 - 82.5mm | 25.5 - 105mm |
| Diaphragm Blades | 9 | 7 |
| Image Circle | APS-C (Sony E-Mount) | APS-C |
| Focal Length (mm) | 16.00 - 55.00 | 17.00 - 70.00 |
| Brand | Sony | Pentax |
| Name | Sony E 16-55mm f/2.8 G SEL1655G | Pentax 17-70mm ƒ/4 AL IF SDM SMC DA |
| Weight (g) | 494 | 485 |
| Diagonal Angle of View (degree) | 29.00 - 83.00 | 23.00 - 79.00 |
| Lens Construction | 17 elements in 12 groups, including 2 aspherical, 2 AA (advanced aspherical) and 3 ED elements; Nano AR coating | 17 elements in 12 groups |
| Zoom System | Rotary | Rotary |
| Length (mm) | 100 | 93.5 |
| Diaphragm Blades Type | circular | - |
| Focus Details | Internal; XD Linear Motor with Focus Hold button, AF/MF switch, Linear Response MF | Internal; SDM with Quick-shift Focus System |
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