Term - Convertible lens
|Convertible lens||SWPP and BPPA Photographic Glossary|
Tuesday 21st May 2013
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 BPPA
SWPP & BPPA, 6 Bath St, Rhyl, LL18 3EB