[jswilson64]

Here's an old trick for avoiding vignetting - buy filters and/or hoods a few mm larger than your lenses and use step-up rings. If you buy the right size, you can use the same polarizer on several lenses - all you have to do is buy the right step-up ring.

[DaveHolmes]

Here's an old trick for avoiding vignetting - buy filters and/or hoods a few mm larger than your lenses and use step-up rings. If you buy the right size, you can use the same polarizer on several lenses - all you have to do is buy the right step-up ring.

I love that... reduces the amount of padded filter cases in you kit bag too!

[Hypocorism]

Here's an old trick for avoiding vignetting - buy filters and/or hoods a few mm larger than your lenses and use step-up rings. If you buy the right size, you can use the same polarizer on several lenses - all you have to do is buy the right step-up ring.

Good advice IMhO. It's definitely a prudent methodology, at some small inconvenience; permits affording less filters of much higher quality too (or just more diff filter types), and the additional required range of step-ups to cover all your lenses works out cheap in comparison.
Also wise to buy the "slim" version of filters in preference, which are often a bit more expensive -- and some of those do have front threads and other brands don't, so get the type you need or want there.

I've found need to be careful to get slimmest possible step-ups too (some are more chunky, 0.5 mm here or there can make real difference), and the minimal amount of them to avoid need for stacking too much because the filter+step_up[s] combo naturally becomes a thicker total overall so can still obstruct AoV from the lens' entrance pupil, with the problem worse at the wider and extreme angles.

.R.