Model PSG-28Au
Wide Angle
Adaptall-2 Symbol35mmF/2.8
Wide Angle
[No photo of optical layout is presently available.]
Tamron Adapt-A-Matic 35mm F/2.8 Model PSG-28Au Lens Tamron Adapt-A-Matic 35mm F/2.8 Model PSG-28Au Lens

Tamron Adapt-A-Matic 35mm F/2.8 Model PSG-28Au: This lens was available in three versions. We are not sure if the PSG-28Au model name applies to all three versions. Initially there was the first model which featured a relatively large optical layout and a metal knurled focus ring. Then there was a subsequent model which featured a rubber focus ring yet still did not have slots on the aperture ring for the aperture coupling band included with later versions of some Adapt-A-Matic mounts. The final version of this lens is considerably more compact and features a rubber focus grip plus the slots for aperture coupling bands.

Lens Specifications:

Lens Model PSG-28Au
Focal Length 35mm
Aperture Range f/2.8 — 16
Angle of View 63°
Optical Construction
(Groups / Elements)
5 / 6
Min. Focus from Film Plane 11.8" (0.3m)
Macro Mag. Ratio
Filter Size 55mm (front)
Diameter 2.7" (68mm)
Length at
[w/Nikon mount]
[2.1" (54mm)]
Weight 9.0 oz. (255g)
Lens Hood ?
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