Wed Apr 30, 2008 11:10 pm
I agree... No question, I'd go for the tubes. If the price difference is being considered , you can check ProOptics tubes which are almost half the price of Kenko. They're not built quiet as nice, but should work fine with your lens and get you closer than the 500D. While the 500D is a nice +4 diopter, it does suffer some minor problems with flare and tends to soften toward the edges. It's advantage being, it doesn't eat light like tubes. But as suggested, using a flash helps tremendously. The larger the magnification, the less dof you'll have either way, so stopping down is a must.