For Macro: Close-up Lens or Extension Tube(s)

[rdavis]

I have a 25mm extension tube and a Canon 500D filter ( I think that Canon calls it a close up lens). Three days ago I got a step up ring (67mm to 77mm) so I could use the 500D on my 70-200 f/4. I did some quick tests using 1. 500D only; 2. extension tube only; 3. combination of extension tube and 500D. The minimum focus distance (MFD) is about the same using either the 500D or the 25mm extension tube -- about 12." The combination set up was a waste of time. It was very difficult to focus and I did not gain any magification. On my Canon 5D, it seems that I was able to use much of the zoom range of the 70-200 lens. But, on my 40D, I was not. I need to check this out again. When I figure out how to post pictures to this site, I will put up a couple of shots I took yesterday using the 500D/70-200 f/4 on the Canon 40D.

[Tony Printezis]

Hi,


Thanks for your feedback!

Three days ago I got a step up ring (67mm to 77mm)

I already have one of those so I can use my 77mm polarizer on my 70-200 f4 IS (I haven't used it "in anger" yet).

But, on my 40D, I was not. I need to check this out again.

I have a 40D (and an XTi) too.


Another quick question: does it make sense to use either an extension tube or the close-up lens in conjunction with the 1.4x extender (on my 70-200)?


Tony

[rdavis]

I have not tried that. Will give it a go and see what happens.