NAB 2013: ARRI Alura LDS Extenders
ARRI's Product Manager, Thorsten Meywald describes the new Alura LDS Extenders 1.4x and 2.0x, perfect for extending the focal length range of zoom and prime lenses.
Using the protocol of the ARRI Lens Data System (LDS), the new extenders have the ability to transfer lens metadata to the camera from the ARRI/FUJINON Alura Lightweight Zooms, ARRI/ZEISS Master Prime and ARRI/ZEISS Ultra Prime LDS lenses. ARRI ALEXA cameras equipped with LDS can automatically identify which extender is being used and immediately display the correct lens data. The lens metadata is extremely useful for speeding up postproduction and visual effects tasks, saving both time and money.
While the extenders will function with many ARRI lenses, they have been specially designed to accompany the four Alura Zooms, to which they are perfectly color-matched. Multiplying the focal length of the taking lens by a factor of either 1.4 or 2.0, with only a one or two T-stop loss at full aperture, they extend the reach of the Aluras all the way up to 500 mm.
Veiling and glare are minimized due to the special FUJINON multi-layer EBC coating, while exceptionally high contrast and resolution are maintained. Combining the Aluras with these new extenders creates a far more affordable solution for long range zoom requirements than specialist telephoto zooms, with little or no influence on the optical performance of the Alura lenses.