Question about adapter rings....

[mamatojack]

I am wanting to purchase some filters for my Canon EOS Digital Rebel (with the 18-55 lens). I will want to purchase the Cokin 55m adapter ring, right?

Just checking! Don't want to make any mistakes. And once I have that adapter ring, I can purchase any Cokin filters for my Canon and they'll work???

Thanks! You all have been so helpful to me!
~Katy

[robertwgross]

I think Cokin rectangular filters come in three sizes, A, P, and X.

The smaller A series filter holder fits on small lenses. The P holder fits on most medium lenses (my 72 and 77mm ones). Then the X holder is for huge lenses.

Find the right one for your lens, and then get the correct adapter ring that allows the holder to screw onto your lens front. That lens of yours takes a 58mm, and I think that means A size.

However, also think about it in the long term. Many photographers here graduate from smaller/cheaper lenses up to larger/expensive lenses over time. At some stage of the game, you may have to chuck your A series filters and move up to the P series. If you thought this to be the case, there is probably some way that you could start off with a P holder and then adapters to step it all the way down to your 58mm for now. A couple of years down the road, if you move to a 72mm filter size lens, then you would simply remove one adapter ring and not have to chuck the whole works. I don't know. Think about it.

I started off in the P series.

When I first saw somebody using this sort of rig, I thought "My, that seems like a clumsy rig!" But then I saw the results from it, and that changed my mind.

---Bob Gross---

[ron chappel]

The kit lens is 58mm so get that size adapter.Allmost all canon consumer zooms are that size now.I'm pretty sure you have to buy a big pro lens before you start dealing with larger than 58mm filters.
For the rare times you will want a smaller size (such as the 50/1.8 with it's 52mm filter),you can but a cheap step-up ring :)

[HJMinard]

The "P" series is probably the best choice to cover your current and almost any future lens.

You'll need this:

http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=14265&is=REG

And this:

http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=14092&is=REG

And whichever (any "P" series) type filter/s (graduated ND, etc.) you need.

[mamatojack]

Oh, man! I totally would have gotten the wrong thing! :oops:

Again, thank you SOOOO much for your help!! :D

~Katy