LEE square V round Polariser

[russellsnr]

Hi, I have recently bought some LEE filters and holders of course and was just wondering what the pro or cons to using the Lee square polariser as I have the system, obviously quicker to put in place with the slot and the cost of the adaptor ring and a 105mm round filter but anything else for or against the square filter polariser?
Thanks
Russ

 

[Uneducated_Rick]

you can't rotate the CPL and ND grads independently whereas you can with a 105mm front ring and CPL