Comparison of Pentax SMC P-FA 28-105mm f/4-5.6 IF and Sony E 18-135mm f/3.5-5.6 OSS SEL18135 [S]ave
| Attribute |  Sony E 18-135mm f/3.5-5.6 OSS SEL18135 × |  Pentax SMC P-FA 28-105mm f/4-5.6 IF × |
|---|---|---|
| Zoom System | Rotary | Rotary |
| Aperture (f) | 3.50 - 36.00 | 4.00 - 22.00 |
| Diagonal Angle of View (degree) | 12.00 - 76.00 | 23.50 - 75.00 |
| Magnification Ratio (x) | 0.29 | 0.18 |
| Filter Size (mm) | 55 | 62 |
| Notes | Sony E-Mount; Optical Image Stabilization; Included Accessories: ALC-SH153 petal lens hood, caps. | - |
| Type | Standard Zoom | Standard Zoom |
| APS Equivalent | 27 - 202.5mm | 42 - 157.5mm |
| Lens Construction | 16 elements in 12 groups, including 1 aspheric and 2 ED glass elements | 15 elements in 12 groups |
| Image Circle | APS-C (Sony E-mount) | 35mm |
| Focal Length (mm) | 18.00 - 135.00 | 28.00 - 105.00 |
| Brand | Sony | Pentax |
| Name | Sony E 18-135mm f/3.5-5.6 OSS SEL18135 | Pentax SMC P-FA 28-105mm f/4-5.6 IF |
| Weight (g) | 325 | 306 |
| Diameter (mm) | 67.2 | 71 |
| Length (mm) | 88 | 74 |
| Diaphragm Blades | 7 | - |
| Closest Focus (m) | 0.45 | 0.49 |
| Diaphragm Blades Type | circular | - |
| Focus Details | Internal focusing; Linear Autofocus Motor with Direct Manual Focus (DMF) | Internal |
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