I got this lens yesterday from another Cafe member, and for some reason it seems to underexpose like crazy. I shoot in +0.7 exposure compensation most of the time, and even then some of the images seem dark. If I bump it up to +1.0, it seems better, but then I get some extremely blown out images. I was shooting in Aperture Priority mode, with varying apertures. I don't have another body to test it out on, unfortunately. I dumped them all into a gallery on SmugMug, click here to check them out. Any ideas?