Image courtesy: Photozone
Photozone posted their full Kowa Prominar 25mm f/1.8 MFT lens review:
The Kowa Prominar MFT 25mm f/1.8 faces a difficult task especially given its price tag of 800US$. The 25mm segment is covered by a variety of lenses which are either much faster, much cheaper or both. However, the Kowa lens has at least one advantage – optical performance. The image quality is decent at max. aperture but when stopping down it is about as good as it gets on the micro four thirds system.
The Kowa Micro Four Thirds lenses on eBay:
8,5mm f/2.8 in on eBay (Click here).
12mm f/1.8 in Black (Click here), Green (Click here) and Silver (Click here).
25mm f/1.8 in Black (Click here), Green (Click here) and Silver (Click here).