B+W kasserman 77 mm CLP Slim or not?

I am mainly using the circular polarizer on Tokina 11-16/2.8 and Canon 17-55/2.8IS. I just spent almost $200 on the slim version. But do I need a slim for those lenses, especially on the UWA?

Also does anyone know if the regular version has thread for lens cap? The plastic cap came with the slim version is not tight enough to hold in place safely. If the regular version has thread for cap and it works well with 11-16, I would probably exchange mine with it.

Thanks.

A non-slim B+W CPL does not vignette at 17mm on full frame. Considering the crop factor of your 7D, it should not vignette at 11mm on that body either.

And yes, the regular version will take your standard lens cap.

Just curious, why do you ask this after you already bought the slim version?

Thanks. I thought the plastic cover came with the lens would stay on but it did not. I was planning to put screw-on ND or GND filter with the CPL and that's why I got the slim version. But since now the plastic cover is not staying on safely, I would prefer using the regular version so I can put my lens cap on. Thanks for your help.

I have the Hoya HD and Hoya Pro1D circular polarizers. The Pro1D has a 5 mm ring and front threads. Works great with UWA lenses. On my 40D and 10-22, it did great above 13-14mm. Some banding below that depending on the circumstances. Below is this filter with more info at the site I bought mine from, 2filter. The 77 mm is $110 there.

http://www.2filter.com​/hoya/hoya_pro1_digita​l.html

DANATTHEROCK wrote in post #10315423
I have the Hoya HD and Hoya Pro1D circular polarizers. The Pro1D has a 5 mm ring and front threads. Works great with UWA lenses. On my 40D and 10-22, it did great above 13-14mm. Some banding below that depending on the circumstances. Below is this filter with more info at the site I bought mine from, 2filter. The 77 mm is $110 there.

http://www.2filter.com​/hoya/hoya_pro1_digita​l.html

Thanks for the info. I miight buy my ND and GND with 2filter.com. Many members here recommended them. I am looking at the Lee brand and the Hitech brand. But I will need to do more research before making a decision.

I will probably just exchange the CPL with the regular version from B&H tomorrow.

Anyone have experience with the B+W kasserman 77mm CPL with a screw on ND on UWA? Any problem?

FWIW the standard F-Pro (non-slim) B+W filters do no vignette on a full frame at 16mm.