Term - Convertible lens
|Convertible lens||SWPP Photographic Glossary|
Sunday 25th March 2018
Compound lens made in two sections, the elements of which are arranged so that when one part is unscrewed it provides a new lens with approximately twice the original focal length.
Information provided by: SWPP
SWPP, 6 Bath St, Rhyl, LL18 3EB