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- For VistaVision Format PL Mount Lenses
- High-Index, Low-Dispersion Glass
The Focal Length Extender from IBE OPTICS is designed to double the focal length of VistaVision Format PL mount lenses. It features high-index, low-dispersion glass for high resolution and contrast with minimal optical degradation. In doubling the image size, the transmitted light is spread over four times the area, decreasing the brightness by two f-stops. To create an optical design that is optimized for modern lenses and digital cameras, the maximum input T-stop is 1.9.
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