Problem. The sky is perfect. It's the "Magic Hour'.' But the light is fading fast. change from a 32mm to 29mm and there's no time. The director wants to Call them Variable Primes or fast zooms. Either way, they are the most advanced, highest performance lens system on the market today. No prime lens the combination of these new or zoom can match speed, sharpness, contrast and low internal flare characteristics of Zeiss Lenses. Continuous coverage of 16 to 105mm focal length with only three lenses gives you more creative freedom. For low light situations these lenses maintain an Now you can zoom absolute T2.2 when changing focal length with the optical performance of a or zooming. prime lens.