Tamron Adaptall 24mm f2.5 01BThe Tamron Adaptall-2 24mm f2.5 (02B) is a wide-angle lens that is around 25% faster than the standard f2.8 lenses of the same focal length. It is a very lightweight and compact prime lens.

Technical Details

Launch Year 1979
Discontinued 1987
List Price when new ¥
Focal Length 24mm
Aperture Range f2.5-22
Aperture Blades
Angle of view 84°
Optical Construction (Groups / Elements) 9 / 10
Minimum Focus 9.8″ (0.25m)
Maximum Macro Magnification ratio
Filter Size 55mm
Diameter 2.5″ (64.5mm)
Length 1.5″ (38mm)
Weight 230g


Optional screw-in type lens hood, model #21FH.

Lens gallery

Marketing Documents

Optical Layout

Tamron Adaptall 2 24mm f2.5 Optical Layout

Background and availability

The Tamron Adaptall-2 24mm f2.5 (01B) is quite well regarded as a solid 24mm lens with the bonus of being fractionally faster than standard 24mm primes (f2.8) whilst generally being cheaper to buy than the main brands (Canon / Nikon). It is normally available on Ebay in good condition for around £40-70 – but some buy-it-now options are far higher than this, so best to wait as they do come up frequently. The lens hood is incredibly rare, I have only ever seen one for sale (which I bought primarily to take images of it for this site) and I have since sold both on.

Performance and handling

The Tamron Adaptall-2 24mm f2.5 (01B) is a nice lens, compact, beautifully built and smooth to use. Like all Tamron Adaptall lenses, the aperture blades stop down smoothly and there are no common problems with this lens. It is sharp enough, for me, wide open for portraits / people shots in low light and is sharp stopped down. I didn’t use the lens a great deal before selling it on, as 24mm is not a focal length I use a great deal.

Sample Images

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