Comparison of Pentax SMC DA 40mm ƒ/2.8 XS and Samsung 30mm f/2 NX [S]ave
| Attribute |  Samsung 30mm f/2 NX × |  Pentax SMC DA 40mm ƒ/2.8 XS × |
|---|---|---|
| Filter Size (mm) | 43 | 27 |
| Closest Focus (m) | 0.25 | 0.4 |
| Magnification Ratio (x) | 0.16 | 0.13 |
| Length (mm) | 21.5 | 9.2 |
| Front Element Rotation | - | - |
| Diaphragm Blades Type | - | rounded |
| Focus Details | Autofocus with manual focusing ring | AF or MF |
| Focal Length (mm) | 30.00 | 40.00 |
| APS Equivalent | 46mm | 61mm |
| Brand | Samsung | Pentax |
| Image Circle | Samsung NX (APS-C) | APS-C |
| Name | Samsung 30mm f/2 NX | Pentax SMC DA 40mm ƒ/2.8 XS |
| Weight (g) | 85 | 51 |
| Type | Standard Prime | Standard Prime |
| Notes | Samsung NX Mount. Included Accessories: Lens Caps, Soft Case; Lens Hood Optional. | 27mm objective cap and rear cap included. |
| Diaphragm Blades | 7 | 9 |
| Aperture (f) | 2.00 - 22.00 | 2.80 - 22.00 |
| Lens Construction | 5 elements in 5 groups, including 1 aspherical | 5 elements in 4 groups |
| Diagonal Angle of View (degree) | 50.20 | 39.00 |
| Diameter (mm) | 61.5 | 62.9 |
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