Tamron's fast 135mm for Konica — the BBAR multi-coated telephoto with good optics.
The Tamron 135mm f/2.8 BBAR Multi Coated for Konica is a fast telephoto prime with Tamron's BBAR (Broad-Band Anti-Reflection) coating. At f/2.8 and 135mm, it provides more speed than the Hexanon f/3.5 alternative. BBAR coating ensures good contrast. Tamron quality is above budget competitors. Likely an Adaptall-2 mount with Konica adapter.
Tamron's optical quality is well-established. The f/2.8 provides useful speed at 135mm for portraits and shallow DOF. BBAR multi-coating is Tamron's quality coating system — effective flare control and good contrast. Sharpness is good. A step above budget alternatives from Hanimex and Soligor in the Konica system.
Likely Adaptall-2 mount with Konica adapter — the Adaptall system enables use on multiple camera systems by swapping mount adapters. Verify mount configuration. Weight varies. Build quality is solid Tamron. The Adaptall-2 versatility adds value — the same lens works on multiple systems with adapter changes.
Available at very low prices. Check mount adapter and smooth focus. Good Tamron quality at 135mm f/2.8. If Adaptall-2, the mount versatility adds significant value. BBAR coating ensures good contrast. Better than budget competitors in the Konica system.