:shock: Hi again! I have a 300D Canon. Just bought a Sigma 105mm 2.8 EX DG. Great lens. BUT ........ Not what I expected. I thought the detail would be greater than what I got (1:1). Ive been snooping around and NOW I see that alot of photogs are using 28mm 2.8's reversed with extension tubes. Should I ditch the Sigma and buy the latter........or can the Sigma be used with the reverse adapter as well (will it be a plus or a minus with a 105mm lens). Which lens' are more desireable for extreme close ups........for that matter what should I get soup to nuts? Bottom line is Im on a budget, and I see that reverse adapters are in the neighborhood of 330 USD. Should I - A) Keep the Sigma 105mm and save for the reverse adapter B) return the 105mm, get the adapter and a 28mm 2.8 WHILE WERE ON THE TOPIC.......... Can someone explain the ratio of 2:8:1 (I know what 1:1, 1:2 etc means) but the Novaflex people advertise that a 25-105 mm lens gives 2:8 magnification at 255mm (and if thats so.....would that make the Sigma 105 desireable with the reverse lens?)/ THANKS A MILLION PEOPLE!!!!!! Bill OH......PS....... Do I really need the Novaflex adapter or could I get buy with reverse rings/and maybe a 28mm attatched to the 105 with male threads?