Comparison of Pentax SMC P-D FA 50mm f/2.8 Macro and Sony SAL-50M28 50mm f/2.8 Macro [S]ave
| Attribute |  Sony SAL-50M28 50mm f/2.8 Macro × |  Pentax SMC P-D FA 50mm f/2.8 Macro × |
|---|---|---|
| Name | Sony SAL-50M28 50mm f/2.8 Macro | Pentax SMC P-D FA 50mm f/2.8 Macro |
| Weight (g) | 295 | 265 |
| Image Circle | 35mm | 35mm |
| Brand | Sony | Pentax |
| APS Equivalent | 75mm | 75mm |
| Focal Length (mm) | 50.00 | 50.00 |
| Lens Construction | 7 elements in 6 groups | 8 elements in 7 groups |
| Diameter (mm) | 71 | 67.5 |
| Magnification Ratio (x) | 1 | 1 |
| Closest Focus (m) | 0.2 | 0.2 |
| Filter Size (mm) | 55 | 49 |
| Aperture (f) | 2.80 - 32.00 | 2.80 - 32.00 |
| Diagonal Angle of View (degree) | 47.00 | 47.00 |
| Type | Standard Prime Macro | Standard Prime Macro |
| Diaphragm Blades | 7 | 8 |
| Focus Details | Auto Clutch; Focus Hold button; Focus Range limiter | - |
| Length (mm) | 60 | 60 |
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