Second-hand teleconverters
A teleconverter fits between the body and the lens, and multiplies the focal length.
Understanding this category
- The factorA 2× turns a 100 mm into a 200 mm. A 1.4× is more discreet and costs less in quality.
- The lost lightA 2× costs two stops: an f/4 becomes an f/8, which makes focusing harder.
- CompatibilityIt has to match the mount, and not every lens takes one mechanically.
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