right almost 3 weeks ago i got a sigma 105mm macro lens. Great lens, i love it. This weekend the forecast is amazing weather so i plan on taking nice macro shots. Well just attached my lens and it wont move the aperture blades. Camera focuses and meters but the lens is stuck at f32. The little lever on the lens mount is stuck too. Guess i have ti return it on monday. I didnt drop it either. This sucks!!