I have recently acquired a 50-110 for my H series and have discovered that Lee don't make a wide angle adapter for 95mm. As I understand it, the standard adapter will vignette at the 50 end and certainly won't work with a 28mm.
I have tried the push on adapter but it doesn't look like it wants to go on easily. Has anyone come up with a solution?
I use the Lee push on or "slip over" filter holder with the 35mm, 50-110mm and the 300mm Hassy H lenses and I find it more convenient and I wish they made in 77mm. I do not get vignetting with the 35mm. I don't know about the 28mm.
It does attach easily--use relieve the pressure (turn the screw)--then tighten it once on the lens. Obviously, if you're using a 95mm UV filter, take it off first on the 35mm. Good luck.