Macro/Wide Angle Attachment issue

[lrailing]

So, I recently got a nifty macro attachment for my Canon 50D. It is smaller than I realized. What would I need to fix this? I've seen several thread adaptors but have no idea what size would work. I have a 28-135 mm lens.

[mike_d]

Exactly what did you buy? Is it the 500D closeup lens that looks like a thick filter? I believe that's a 77mm. According to Amazon, your 28-135 has 72mm threads so you'd need a 72mm to 77mm step up ring to make it fit.

[lrailing]

This is what I bought:

http://www.amazon.com/Angle-Converte.../dp/B0025Z7MAE

I have a friend who also has it and uses it but it turns out they use it with lenses from their Rebel and that works fine.

[mike_d]

That thing says it fits an 18-55 lens which has 58mm threads. Its too small for your 28-135 with 72mm threads. That really looks like a cheap gimmick. Wide angle and macro are opposite goals. Even if it fit your lens, I wouldn't expect much from a $21 item.

[lrailing]

wouldn't an adaptor ring work for it?

[mike_d]

You could get a step down ring to make it fit. But you'd still be sticking a small piece of glass in front of a larger piece of glass. That's not good.