Hi, it's just me bothering you again ;) Bought me that Sigma 50mm 2.8 Macro Lens two weeks ago. Some nice archnid shots were done with it but i had to get very close to that spiders. As spiders are patient (at least, ours are) that was no problem for now but thinking of fireflys or butties next summer, 50 mm are not enough focal lenght. Also, the AF is quite noisy, slow and doesn't seem to work perfectly (at least, not every time). So, i'll bring that lens back today and try to get another one in exchange (with adding some extra bucks). But what to take? Sigma 105mm 2.8 EX or Tamron 90mm 2.8? Tamron is more expensive and i didn't find to much about it. The Sigma did get some excellent reviews but after having the smaller Sigma and being not at all satisfied, i'm not really sure if this should be my choice? So what do you think? Thx in advance! cu Tom