to livewire, just go to your user cp, signature, then type 'flickr' or 'my pics' or whatever then highlight that and click insert link (wee world symbol) and insert your flickr address which you can find on your account i think.
Here, i was browsing ebay for a macro lens and came across this:
Minolta Dynax or Sony Alpha Autofocus fit Sigma 28-80mm f3.5-5.6 macro zoom lens in mint- condition complete with 55mm lens cap
Sharp optics and a very high build quality lens, 1:2 ratio macro focusing down to 25cm
Will fit and is fully compatible with all Minolta autofocus bodies new and old including all Dynax models and is also compatible with the Dynax 7D, 5D and Sony Alpha A100, A200, A300, A350 and A700 digital slr giving a 35mm equivalant range of 44mm to 120mm, also suitable for Sony A900.
My question is (as a newb!) What does that 'equivalant range of 44mm to 120mm' mean? How do they work that out? And what does it mean in real life?