Kalimar Tele Converter 2X Power Automatic for Pentax K NEW IN BOX
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The Kalimar Tele Converter 2X Power Automatic for Pentax K is an optical accessory designed to double the focal length of lenses attached to it. Here are some key details and considerations for this teleconverter:
Key Features:
- Compatibility: Designed specifically for Pentax K mount lenses and cameras.
- Magnification: Provides a 2x magnification, effectively doubling the focal length of the attached lens. For example, a 50mm lens will act like a 100mm lens.
- Automatic Features: Maintains automatic diaphragm control and metering, which is essential for maintaining ease of use and functionality in automatic exposure modes.
Usage Considerations:
- Optical Quality: Using a teleconverter generally results in some loss of image quality, including potential reduction in sharpness and contrast. The extent of this varies with the quality of both the teleconverter and the primary lens.
- Aperture Impact: A 2x teleconverter will reduce the maximum aperture of the lens by two stops. For instance, a lens with a maximum aperture of f/2.8 will have an effective maximum aperture of f/5.6 when used with this teleconverter.
- Focus Performance: Autofocus performance may be affected, especially in low-light conditions or with lenses that already have a smaller maximum aperture.