| Panasonic Leica D Summilux Asph 25mm F1.4 | |
| Maker: | Panasonic |
| Mount: | Four Thirds |
| Focusdrive: | Micromotor |
| Feat-Ws: | n |
| Feat-Is: | n |
| Feat-Ar: | y |
| Feat-Mfo: | n |
| Type: | p |
| Flength: | 25 mm |
| Flength-Eq: | 50 mm |
| Aperture: | 1.4–16 |
| Elements: | 10 |
| Groups: | 9 |
| Diaphragm: | 7 |
| Close-Dist: | 0.38m (01.25feet) |
| Max-Dist: | Infinity |
| Max-Mag: | 0.18 |
| Max-Diameter: | 77.7mm |
| Max-Length: | 75mm |
| Weight: | 510g |
| Filter: | 62 mm |
| Hood: | petal shaped hood |
| Av-Diag: | 47° |
| Start: | 2007 |
The Panasonic Leica D Summilux Asph 25mm F1.4 is an interchangeable camera lens announced by Panasonic on March 7, 2007.
The lens uses 10 elements in 9 groups, arranged as a double Gauss type, with one aspherical, three extra-low dispersion (ED), and one super ED element. It was announced in March 2007, with availability starting that April.[1]
As reviewed in 2010, the lens exhibited little distortion and offered close to maximum resolution wide-open, improving slightly at .[2] Resolution on the frame's edge was weaker, though, due to chromatic aberration and visible coma at maximum aperture.[3]