Extenders FD 2X-B
Construction: 5 groups 7 elements
Coating: SSC (super spectra coating)
Magnification: 2X
Used with lenses: Less than 300mm and zooms with 200mm in their range.
Function: Auto Aperture, Full aperture metering (AE operation when used with ALL Canon automatic SLR cameras.
Length x max. diameter: 43mm x 64mm
Weight: 240g