Comparison of Pentax SMC P-DA 40mm f/2.8 Limited and Samsung 45mm ƒ/1.8 NX [S]ave
| Attribute |  Samsung 45mm ƒ/1.8 NX × |  Pentax SMC P-DA 40mm f/2.8 Limited × |
|---|---|---|
| Filter Size (mm) | 43 | 5 |
| Notes | Samsung NX Mount; Included Accessories: lens caps, lens hood; i-Scene: Night, Portrait, Beauty shot, Children, Backlight, Sports | Distance scale |
| Closest Focus (m) | 0.45 | 0.4 |
| Magnification Ratio (x) | 0.13 | 0.13 |
| Type | Telephoto Prime | Standard Prime |
| Focus Details | Autofocus with manual focusing ring; AF/MF switch; Stepping motor for smooth, quiet AF | "Quick Shift" AF/MF mechanism |
| APS Equivalent | 69.3mm | 60mm |
| Diameter (mm) | 62 | 63 |
| Image Circle | Samsung NX (APS-C) | APS-C (but we found it didn't vignette on a 35mm film body) |
| Focal Length (mm) | 45.00 | 40.00 |
| Brand | Samsung | Pentax |
| Name | Samsung 45mm ƒ/1.8 NX | Pentax SMC P-DA 40mm f/2.8 Limited |
| Weight (g) | 115 | 90 |
| Aperture (f) | 1.80 - 32.00 | 2.80 - 22.00 |
| Diaphragm Blades | 9 | 9 |
| Diagonal Angle of View (degree) | 34.70 | 39.00 |
| Length (mm) | 44.5 | 15 |
| Diaphragm Blades Type | circular | - |
| Lens Construction | 7 elements in 6 groups | 5 elements in 4 groups |
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