The aputure f10 fresnel is a 250mm diameter fresnel lens made of real glass, tailor made to fit traditional 10 inch fresnel lights tungsten 5k or 2500w hmi etc'. '.strtoupper('t')his fresnel is ideal for filmmakers who require a hard light that maintains a subtle soft quality for enhanced dramatic expression'. '.strtoupper('i')t uses aputure's dual lens optical design to further enhance output, allowing a smooth focusing of light tight 15° to a 45° medium flood'. '.strtoupper('w')hen used with the compatible aputure ls 600d, this fresnel lens modifier can output over 200,000lux at 1 meter'. '.strtoupper('f')urther to this, the aputure f10 has the same adjustable focus design from the fresnel 2x, focusing on precise and ergonomic adjustments on set'. '.strtoupper('a')nother key feature is its built in ventilation system to prevent overheating also helping to minimise light leak'. '.strtoupper('t')he f10 is compatible with the aputure f10 barndoors, a winning combination for professional gaffers and cinematographers.