The B+W 72mm 093 Infrared Filter is one of the best filters to get for the 135mm f/2L...if you want to block all visible light and only allow infrared light to reach your sensor (where it will be blocked by the IR cut filter on the sensor, leaving you with a completely black image).
The point is, a filter for what? Protection? Neutral density? Polarization? Soft focus? Starburst effect? Etc.?
+ 10 for me too, Dear Teacher Mr. neuroanatomist.
One Question, Sir.
B+ W have many Level of UV ( 72 MM--Example)--Start from the Cheapest one = UV Haze SC 010 , 72 mm = $ 34 US Dollars ( At B&H), UV filter-Slim = $60.50, UV Multicoated = $ 71.75, UV - 415 ( 2B) = $ 200, XS PRO UV # 010M = $ 95.95, and XS-PRO UV MRC NANO MC # 010 M = $ 70.99------------
My question is, Should I pick the Highest Cost one ?----IF NOT, Which one should I pick---Yes, When I buy my new 135 L from local Camera shop, they give me free Hoya HMC SUPER 72 mm. UV ( ) ) Made in Japan.
As your IDEA, Sir. Will I go to buy B=W Filter as your Recommend--Or just use the Freeby Hoya Filter ?
Thank you, Sir for your Advice.
Yes, The real cost of Hoya 72mm UV (Ultra Violet) Super HMC Multi Coated Glass Filter= $ 70 us. Dollars at Amazon --Free Shipping.