ah ok, good to know that the standard caps still work.
But what about the hoods? i read that the filter is a bit wider so it may foul some lens hoods from operating correctly?
The reason im asking is because i can actually get the slim for a cheaper price than the standard one, so i was thinking to get the slim if it works well. I know that with these 2 lenses (85/135) vignetting wont be an issue, its purely just a pricing thing of the filters

If the slim can fit on the 85 or 135 whilst still retaining the hood compatibility then thats all i want

anyone used a slim on the 85L or 135L ?
Thanks!