I am rather new to the SLR world and I was wondering if any of you could give me some advice. I currently own a Pentax *ist DS (DSLR) and use a Promaster 28-300mm lens. I mainly take pictures of horses and I've found that while this particular camera/lens combination functions OK, I am still getting a lot of blurred images. (It isn't entirely the lens either, I also use a manual focus lens and the shots are still a bit fuzzy). I have been thinking about upgrading to an Olympus DSLR, as money is unfortunately an object and I've heard good things about the sharpness/clarity of Olympus DSLRs. I would be getting the Olympus E510...however I am still a little worried about the whole sharpness issue. I was wondering if anyone has any experience with the Olympus E510 and if it really does manage to get consistent clear shots of moving objects. In short, is the E510 really a step up and is it worth selling my Pentax for?