i also have this lens. just bought this lens in Dec 08. it truly gives u a nice bokeh. however i have one issue, which is overexposed images. everytime i want to shoot in daytime, i need to adjust to -0.7EV on my D40.
anyone having the same problem? will it solve the problem by bringing it down to sigma service center for calibration?
i have the same problem with my s5 pro but no problem with my ex D40.. Funny thing is for other lens i need to set +0.3 for my s5 pro and sigma 30mm i need a -0.7... may be too much light enter the lens..