[DigiDiva]

I have no idea if these are what I am wanting, so hope you can help.

Have looked up how to use them, but these seem to be for macro work, allowing you to focus closer to the subject. What I am looking for is ways of making the focal length longer (or is this the same thing?). I understand that you can get closer to a small oblect with extension tubes, but what about, for example, if you can't get closer (wildlife photography) and want the subject to appear closer to you?

Would extension tubes work for this? Im stuck with a Tamron 70 - 300 and cant afford to go up to 400 or above...

Can anyone explain please?

Thanks