Comparison of Nikon 50mm f/1.4 AIS Nikkor and Pentax SMC P-FA 50mm f/1.4 [S]ave
| Attribute |  Nikon 50mm f/1.4 AIS Nikkor × |  Pentax SMC P-FA 50mm f/1.4 × |
|---|---|---|
| Name | Nikon 50mm f/1.4 AIS Nikkor | Pentax SMC P-FA 50mm f/1.4 |
| Image Circle | 35mm (FX) | 35mm |
| Brand | Nikon | Pentax |
| APS Equivalent | 75mm | 75mm |
| Focal Length (mm) | 50.00 | 50.00 |
| Diameter (mm) | 63.5 | 64 |
| Diaphragm Blades | 7 | - |
| Closest Focus (m) | 0.45 | 0.46 |
| Focus Details | Manual Focus Only | - |
| Filter Size (mm) | 52 | 49 |
| Magnification Ratio (x) | 0.15 | - |
| Notes | Classic Nikon F Mount; AIS / AI / NAI Metering Compatibility; Includes front and rear lens caps. | - |
| Aperture (f) | 1.40 - 16.00 | 1.40 - 22.00 |
| Length (mm) | 40.6 | 38 |
| Weight (g) | 246 | 221 |
| Lens Construction | 7 elements in 6 groups | 7 elements in 6 groups |
| Type | Standard Prime | Standard Prime |
| Diagonal Angle of View (degree) | 46.00 | 47.00 |
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