I've got a 100 macro USM version that doesn't get used much at all. I've got it just for when I want to take a picture of something up close. I've also got too much weight in my backpack. I'm not "into" macro photography so what other options do I have that will allow me to get up close to something for a picture that will be something like what the 100 macro does. I would need that ability only on rare occasions and a little bit of PQ drop off would be acceptable. I'm looking to lighten the pack and hopefully have some money left over to go towards something else.
It's easier to use the 500D on longer lenses, and easier to use tubes on shorter lenses. The amount of extension tube length you need is proportional to focal length.
