52mm IR Cut filter

[dfoo]

This filter is $95. http://www.bhphotovideo.com/c/product/235336-REG/B_W_65_095002_52mm_486_Digital_UV_IR.html

This filter is $75.50. http://www.bhphotovideo.com/c/product/154800-REG/B_W_65014688_52mm_486_Digital_UV_IR.html

The basic difference as far as I can see is the first is a "slim" version. Will either work correctly on a CV 15mm type II lens?

 

[swoop]

The slim versions of filters is just for ultra wide angle lenses so that it doesn't interfere with the viewing angle and cause vignetting.

 

[dfoo]

15mm is pretty wide Ok, perhaps on an M8 its not super wide at around 20mm...

 

[swoop]

On the 15mm. I would personally go with the slim version. Though to be honest I've never noticed my filter interfering with the lens, even on my wide angles. But better safe than sorry.