QUOTE(LisaC @ July 30 2008, 04:44 PM)

Wow, this is the information I needed, thank you very much! I called B&H and I was only told that one was newer than the other. Normally I am able to get very good info from them, but today it was rather basic. I do want to use it for extreme close ups and so the 2.8 sounds like the one for me.
I am so excited to get this one!! Thanks for the examples Eric and Dustin!
Just making sure you understand mine is from adding $150 filter to lenses I already own instead of spending $760 on a whole new lens. Basically when adding the
Canon 500D close-up filter to a 70-200 f/2.8 VR, you have a lens about as sharp (I would say about 90-95% as sharp, really imperceptible) and almost as large of a reproduction ratio (around 1:3 I would say, but more with a crop factor body) as the dedicated macro lens, BUT, you can put it on other lenses as well and not be locked in to one angle of view!
Let me put it this way, everyone I have recommended the
Canon 500D close-up filter to, has purchased it instead and not just to save money, but once again, it also opens a few more doors for you so-to-speak. Nikon makes three different Macro lenses (60 f/2.8, 105 f/2.8 VR, and 200 f/4), and in essence I own them all, just by adding the filter to my lenses. No it doesn't focus quite as close, but it really does focus very close on both the 24-70 and 70-200 and is crazy sharp. Also I have VR at focal lengths 70-200 instead of just on the 105. If you don't have either of those lenses, then I don't know what to tell ya. I know I'm jabbering a lot, but I'm really just trying to show you how awesome of a value the close-up filter option is. And literally, here's a penny for thought, I took just for you! One full frame and one crop factor shot. Best of luck!
Click to view attachmentNikon D3 and 70-200 f/2.8 VR @ 200mm; 1600 ISO, 1/160 sec, f/4 Full frame camera
Click to view attachmentNikon D3 and 70-200 f/2.8 VR @ 200mm; 1600 ISO, 1/160 sec, f/4 Full frame camera in DX mode