help with macro lens

[photoshot]

I recently purchased the Opteka 10x macro lens from Amazon. It did not come with any instruction. It mounted quite well with my both of my Canon 18-55mm and 70 -300mm lenses, but I can not get focus. I have tried both manual and auto, but still no focus. I am new to photography so I am not sure if I need a coupling ring. Please help with advice and tips. thanks

[porterd2nz]

I've got a Marumi +10 and had the same problem when I started to experiment with it.

You have to get very close to your subject. On my 100mm the min. focus distance to ~200mm but with the +10 I need to reduce this down to around ~50mm or LESS.

And, of course, you can no longer focus to infinity...

[Sunday0303]

That's the disadvantage of macro filters. They limit your focussing distance to about 3cm. (Depending on the filter)

[photoshot]

Thanks for the tips. It worked ok now, but I guess if I really would like to macro photography I'll have to spent more money with macro lenses instead of the filters.