Hi, I would like to know if this is a good combination for macro work. Actually I have no idea what a 500D is except that it is a close-up filter. Supposedly to make my focussing distance to a minimum of 50cm? If that's the case, won't the manification be even higher than a 180mm whose min focus distance is 0.45m or so.
Also, since macro work requires high F-stops normally, I think F5.6 at 300mm should be good enough? Or will the close-up filter increase the max aperture as well.