Samyang 500mm f/6.3 .... got this bad boi in the mail yesterday was pretty stoked to test it out... probably gonna get a ND filter for this guy next using a 92mm
Insane Samyang 500mm F/8 lens - YouTube
Long Tom (The Samyang 500 F8 ): Micro Four Thirds Talk Forum: Digital Photography Review
Amazon.com: Samyang MF 500mm F8.0 Nikon 1 - DSLR CSC Telephoto Lens Manual Focus Filter Diameter 67mm for Full Format and APS-C Sensor : מוצרי חשמל