I've got a Tamron AF Aspherical XR LD [IF] 28-300mm f/3.5-6.3 Macro lens. The one without the Di designation. It's decent.
I've also owned one of the older versions of this lens, the Tamron AF 28-300mm F/3.5-6.3 LD Aspherical (IF). It felt a little better constructed, but I don't think it was as sharp as the one I have now. And it was heavier.
But now I see this one on ebay:
https://www.ebay.com/itm/Near-Mint-Tamron-AF-28-300mm-f-3-5-6-3-LD-Macro-Lens-for-Canon-EF-From-Japan/162911845568?hash=item25ee4d7cc0:g:PoYAAOSwoLpajRluTamron AF 28-300mm f/3.5-6.3 LD Macro
It's silver, and it looks like it has metal flanges instead of the plastic I had on the other two. Is this an even older version of the lens? I can't really tell from the photos but it looks like the whole lens might be metal.
