I've been looking for a good system of filters for my 7-14 pro. There are several well-reviewed 3D printed adapters but now I see that Lee has an official adapter for their 100mm system. The problem is it recommends using only 10-14mm due to vignetting. Does anybody have any firsthand knowledge of whether the vignetting occurs with the filters straight or (as I'm imagining) the vignetting only occurs when the filters are rotated? Also, wouldn't the vignetting have more to do with the rails on the actual filter holder than it would with the adapter? Update: A representative at Lee said vignetting can occur regardless of filter orientation at focal lengths less than 10mm. FWIW, he said the vignetting is not an issue if you use the 150mm filter system, but those filters are absolutely massive. Looks like I'll be trying one of the 3D printed adapters!