step-down rings or new filters?

Jethro B-UK wrote:

Steve, you'll probably experience quite heavy vignetting at the short end of your to-be 18-135mm lens. Especially with the 49mm filters. It might be different if it was an EF lens (full-frame), but it's not, it's an EF-S lens (APS-C).

Out of interest, what filters do you use? ND, Polariser? I currently only use UV filters, and am planning on getting some at some point.

Both my current lenses are 58mm, but I plan on getting the canon ef-s 10-18mm at some point, which has a 67mm filter thread. I don't know if I should buy filters that are too large for my current lenses, and get a step-up ring or just buy 58mm filters, and upgrade them later.

Jethro,

I keep a UV filter on my lenses all the time. If I'm going to risk something, I'd rather risk a $40 filter than a $600 lens. I use a CPL filter occasionally. I haven't used ND filters much, but bought them for moving water scenes where I want to slow the shutter speed down and blur the water, but mainly for video work where the shutter speeds are much slower than normal still photos according to the 180 rule.

Although I must admit, I don't have much experience in shooting video in M mode, where I shoot with a fixed shutter speed.  Usually I shoot in AV mode and the camera is constantly changing the shutter speed and aperture. I was confused about that until I read in my T8i manual that if you shoot video in any mode other than Manual, the camera behaves as if the camera is in P mode and sets the SS and aperture itself.

I have to get a lot more experience under my belt.

After listening to you and guinness2, I think I'll go with the dedicated 67mm filters rather than step rings.

Steve Thomas