Comparison of Canon EF-S 18-135mm ƒ/3.5-5.6 IS and Pentax 18-135mm ƒ/3.5-5.6 ED AL [IF] DC WR SMC DA [S]ave
| Attribute |  Canon EF-S 18-135mm ƒ/3.5-5.6 IS × |  Pentax 18-135mm ƒ/3.5-5.6 ED AL [IF] DC WR SMC DA × |
|---|---|---|
| Aperture (f) | 3.50 - 38.00 | 3.50 - 40.00 |
| Filter Size (mm) | 67 | 62 |
| Notes | EF-S lens mount, exclusively for bodies with APS-C sensors. Image Stabilization up to 4-stops. Optional lens hood. | Weather-resistant. Included Accessories: Lens Hood |
| Closest Focus (m) | 0.45 | 0.4 |
| Magnification Ratio (x) | 0.21 | 0.24 |
| Zoom System | Rotary | Rotary |
| Type | Standard Zoom | Standard Zoom |
| APS Equivalent | 29 - 216mm | 27.5 - 207mm |
| Diaphragm Blades | 6 | 7 |
| Image Circle | APS-C | APS-C |
| Focal Length (mm) | 18.00 - 135.00 | 18.00 - 135.00 |
| Brand | Canon | Pentax |
| Name | Canon EF-S 18-135mm ƒ/3.5-5.6 IS | Pentax 18-135mm ƒ/3.5-5.6 ED AL [IF] DC WR SMC DA |
| Weight (g) | 455 | 405 |
| Diaphragm Blades Type | rounded | rounded |
| Lens Construction | 16 elements in 12 groups, including UD and aspherical elements | 13 elements in 11 groups, including 1 ED ands 2 aspherical elements |
| Diagonal Angle of View (degree) | 11.50 - 74.30 | 11.90 - 76.00 |
| Length (mm) | 101 | 76 |
| Diameter (mm) | 75 | 73 |
| Focus Details | Inner focusing; AF/MF switch with micro DC motor | Internal with "Quick Shift" AF/MF mechanism and DC motor |
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