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Panasonic Leica-D Summilux 25mm f/1.4 lens for Four Thirds
see also:
Here is the lens mounted on a Panasonic GH-1 Micro Four Thirds camera via an adapter and with an Olympus WCON-08B PRO 0.8x wide converter on the front of it which makes the whole lens look much bigger but effectively makes it a 20mm focal length lens just for fun:
introduction
- a premium quality wide aperture “standard” lens for Four Thirds designed to Leica standards which sold in Australia for $A1799
- this lens was designed to be used wide open or at f/2.0 when it is incredibly sharp in the centre with the lowest levels of CA, unlike the Panasonic Leica DG Summilux 25mm f/1.4 ASPH lenses which is a little soft wide open, especially in the corners, and it's sharpness is best at f/2.8-5.6
- now apparently discontinued and essentially replaced by the much smaller, less expensive, Micro Four Thirds system version, the Panasonic Leica DG Summilux 25mm f/1.4 ASPH lenses although this will not fit Four Thirds cameras
specs
- 25mm focal length = 50mm field of view on 35mm full frame camera
- f/1.4 aperture
- aperture ring but only functions on Panasonic cameras not Olympus cameras
- 62mm filter thread non-rotating
- 10 elements in 9 groups inc. 1x aspherical, 1x Super-ED and 3x ED elements
- nice bokeh
- sharp wide open and sharpest at f/2.0
- close focus 0.38m
- 1.1EV vignetting; 0.5% barrel distortion
- 1.2px CA wide open increasing to 1.9px at f/5.6
- 75 x 78 mm
- 510g
- RRP $A1799 in 2009
reviews
-
- stunningly sharp in centre even wide open, peaking at f/2.0 which broke the resolution records for photozone.de!
- edges are sharp at all apertures just not as incredibly sharp as the centre
- 1.1EV vignetting at f/1.4
- minimal barrel distortion (0.5%)
- lateral CA increases as aperture is stopped down