The cheapest way to get to macro shooting is definitely what phisheep posted then. I personally got my set of Macro tubes (Fotodiox branded metal tubes) for $10. But I'd read up on non electronic tubes and what it would mean for your lenses (you lose electronic functions and aperture control). I shoot with manual lenses that have aperture rings so this isn't an issue for me. Electronically coupled tubes will cost more. Here's a typical shot you can make with a 50mm lens and 17mm worth of tubes...
http://farm4.staticflickr.com/3438/5837638464_fc19411dd8_b.jpg[img]
And here's one with my 28mm lens that has a much closer Minimum Focus Distance and is more dramatically effected by 17mm worth of tubes...
[img]http://farm6.staticflickr.com/5105/5747668663_34a18c30b7_b.jpg[img]
My set of tubes came with 50mm worth of tube length which means I can attain 1:1 magnification (true macro) with my 50mm lens.[/QUOTE]
[quote="phisheep, post: 34816160"]Yep, exactly that. They are just empty tubes that fit between the lens and the camera - what that does is increase the distance between the sweet spot of the lens and the sensor (yeah, I know that's obvious!) and decrease the useable depth of field (closest way I can find of describing it) so the lens doens't focus at infinity any more but you [I]can [/I]focus on objects a lot closer to the front of the lens. So obviously they look bigger. A lot bigger.
There are two sorts - the dumb sort (plain tubes that fit the camera and the lens) that you can get hold of for about £10, or the smarter sort that have the electrics in to let you control the lens from the camera (that's what I got for around £100).
If you want to play around with macro without spending a fortune, try them out.
EDIT: Look at Blue Tsunami's post just above mine, he knows way more about this stuff than I do but still came to about the same answer. I'd suggest going for the more expensive tubes unless you're really confident what you are doing with the camera, because otherwise focusing is tricky. Actually at this scale it is tricky anyway, but it is really handy to auto in to start with and then switch to manual and move the camera back and forth to fine-tune.
EDIT AGAIN: if you want to experiment even cheaper, use a toilet-roll tube cut down to about an inch and see what happens. It's worth a play.[/QUOTE]
Great, thanks for the advice guys, huge help. So the electric ones, how much do they cost? Any recommendations? I'm serious about getting into macro photography, and would love to experiment. These tubes seem like cheap but effective way of achieving this, yeah?
And those example shots are amazing, exactly what I'm looking for! I'm a sucker for bokeh backgrounds, however, so typically, whats' the DOF like?