Comparison of Pentax 40mm f/2.8 Limited HD DA and Pentax SMC DA 40mm ƒ/2.8 XS [S]ave
| Attribute |  Pentax 40mm f/2.8 Limited HD DA × |  Pentax SMC DA 40mm ƒ/2.8 XS × |
|---|---|---|
| Aperture (f) | 2.80 - 22.00 | 2.80 - 22.00 |
| Filter Size (mm) | 49 | 27 |
| Notes | Available in black or silver; High-grade multi-layer HD (High Definition) coating; Rounder aperture blades should yield more pleasing bokeh. | 27mm objective cap and rear cap included. |
| Closest Focus (m) | 0.4 | 0.4 |
| Magnification Ratio (x) | 0.13 | 0.13 |
| Diameter (mm) | 63 | 62.9 |
| Type | Standard Prime | Standard Prime |
| APS Equivalent | 61mm | 61mm |
| Diaphragm Blades | 9 | 9 |
| Image Circle | APS-C | APS-C |
| Focal Length (mm) | 40.00 | 40.00 |
| Brand | Pentax | Pentax |
| Name | Pentax 40mm f/2.8 Limited HD DA | Pentax SMC DA 40mm ƒ/2.8 XS |
| Weight (g) | 89 | 51 |
| Diaphragm Blades Type | rounded | rounded |
| Lens Construction | 5 elements in 4 groups | 5 elements in 4 groups |
| Diagonal Angle of View (degree) | 39.00 | 39.00 |
| Length (mm) | 15 | 9.2 |
| Front Element Rotation | - | - |
| Focus Details | "Quick Shift" AF/MF mechanism | AF or MF |
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