Tamron SP 1.4X Tele-Converter (140F)

Tamron SP 1.4X Tele-Converter model 140F, Adaptal-2 mount system, BBAR multi-layer lens coating.

Produced ~ 1984 - 1994

Specifications:

Lens Model: 140F
Focal Length: 1.4X the focal length of original lens
Aperture Range: f/2.8 — 45, AE
(Original lens F number x 1.4)

Optical Construction:
(Groups / Elements) 3 / 5
Min. Focus: Retains the min. focus of original lens.
Macro Mag. Ratio 1.4X the mag. ratio of original lens.
Diameter: 2.5" (64.5mm)
Length at Infinity: 0.86" (21.9mm)
Weight: 169g