Vivitar automatic tele converter Minolta

The Vivitar Automatic Tele Converter for Minolta is an accessory designed to double the focal length of Minolta mount lenses, providing an economical way to achieve greater telephoto reach. Here’s a detailed overview:

Key Features:

1. Compatibility: Designed specifically for Minolta mount lenses and cameras.
2. Magnification: Offers 2x magnification, effectively doubling the focal length of the attached lens. For example, an 85mm lens will function as a 170mm lens when used with this teleconverter.
3. Automatic Features: Maintains automatic diaphragm control and, depending on the model, may also support automatic exposure settings, making it easier to use with modern cameras.

Usage Considerations:

1. Image Quality: As with most teleconverters, there is typically a reduction in image quality, including potential losses in sharpness and contrast. The impact varies with the quality of both the teleconverter and the primary lens.
2. Aperture Reduction: The teleconverter reduces 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.
3. Autofocus Performance: Autofocus might be slower or less accurate, particularly in low-light conditions or with lenses that have smaller maximum apertures.