I get a minor bit of vignetting at full wide angle when taking photos but when taking video at widest angle, watch out! You can actually see the filter ring!
Wahawk wrote:
Many of the smaller sizes, depending on the adapter, etc, can lead to vignetting towards the wide-angle end of the zoom. I have heard that some use the basic adapter which is for 67mm and then put step-down rings on it to fit the smaller filters. This means that the filter is getting farther away from the front of the lens, and the farther away it gets, the greater the chance of those pesky dark corners that you don't want, unless you stay zoomed out a ways.