I am confused with two Tamron lenses

[valueair]

There are two identical Tamron 28-75mm f2.8 :

1. Tamron AF 28-75mm f2.8 XR Di
2. Tamron SP AF 28-75MM F/2.8 XR Di LD Aspherical

Image-wise are there any different?

TIA

[loosecannon]

This is the only 28-75 lens that Tamron makes. The designation is taken off their own website. The Tamron AF 28-75mm f2.8 XR Di was probably just shortened and refers to the lens below.

SP AF28-75MM F/2.8 XR Di LD Aspherical (IF)

[Cadwell]

there is only one Tamron 28-75mm lens. the name is so damn long that few people bother to type it out fully.