Sigma 10-20mm F3.5 vs F4.0-5.6
Lens Specifications
The side-by-side specification of each lens, seen below, really highlights the differences between the lenses. The green cells emphasize the areas where lens excels and the red cells indicate where the lens could be improved.
| Sigma 10-20mm F3.5 | Sigma 10-20mm F4-5.6 | |
| Groups/Element | 10/13 | 10/14 |
| Special Elements | 2 Extraordinary Low Dispersion and 1 Special Low Dispersion | 3 Aspherical and 3 Special Low Dispersion |
| Image Format | APS-C (16 x 24) | APS-C (16 x 24) |
| Angle of View | 102.4 to 63.8 degrees | 102.4 to 63.8 degrees |
| Minimum Focusing Distance | 9.4 inches (24 cm) | 9.4 inches (24cm) |
| Autofocusing Type | Hyper-Sonic-Motor* | Slotted Screw-drive |
| Filter Diameter Front | 82mm | 77mm |
| Maximum Aperture | F3.5 | F4-5.6 |
| Minimum Aperture | F22 | F22 |
| Diaphragm Blades | 7 | 6 |
| Zoom Rotation | Counterclockwise | Counterclockwise |
| Focus Rotation | Clockwise | Clockwise |
| Weather Sealing | No | No |
| Full-time Manual Focus | Yes | No |
| Distance/ Depth of Field Scales | No | No |
| Dimensions | 3.4” x 3.5” (87.3 x 88.2mm) | 3.3” x 3.2” (83.5 x 81mm) |
| Weight | 18.3 oz. (520g) | 16.4 oz. (470g) |
| Accessories | Hood, Pouch | Hood, Pouch |
| Autofocus/Manual focus selector switch | Yes | No |
* For the HSM to work properly it requires a KAF2 mount, if the camera body does not support HSM, auto focus will not be available. The lens does not have a slotted screw-drive. Below is a picture of the Sigma 10-20mm F/3.5 mount.
