What 77mm polariser for Sigma 10-20mm EX DG

RainbowSix · 15th February 2006

Hi,

I am thinking of getting a circular polariser for my sigma 10-20 lens (on my 350D body). I understand that because of the ultra wide angle, I need to use a slim filter in order to avoid vignetting? Does that mean for hoya, i need to get the Ultra thin or Pro 1 series?

Also, what is the difference betw a B+W 77mm Kaesemann Circular Polarizer Glass Filter Slim & B+W 77mm Circular Polarizer Glass Filter Slim?

Thank you!

RainbowSix · 15th February 2006

Sorry, I meant Sigma 10-20mm EX DC.

yyD70S · 16th February 2006

The B+W Kaesemann filter is sealed around the edges. IE, the polarizing foils that do their job are sandwhiched between two layers of glass and can be suseptable to moisture. The Kaesemann version protects them.

However, I would suggest that if you are really into B+W, go for the MRC version. It's a newer version and the MRC coating is completely separate and is B+W's latest high scratch resistant coating. Easy to clean too!

Sorry, but I have not tried the Hoya series.

15th February 2006	#1
RainbowSix New Member Join Date: Jan 2006 Location: Ang Mo Kio, Singapore Posts: 25	What 77mm polariser for Sigma 10-20mm EX DG Hi, I am thinking of getting a circular polariser for my sigma 10-20 lens (on my 350D body). I understand that because of the ultra wide angle, I need to use a slim filter in order to avoid vignetting? Does that mean for hoya, i need to get the Ultra thin or Pro 1 series? Also, what is the difference betw a B+W 77mm Kaesemann Circular Polarizer Glass Filter Slim & B+W 77mm Circular Polarizer Glass Filter Slim? Thank you!

15th February 2006	#2
RainbowSix New Member Join Date: Jan 2006 Location: Ang Mo Kio, Singapore Posts: 25	Re: What 77mm polariser for Sigma 10-20mm EX DG Sorry, I meant Sigma 10-20mm EX DC.

16th February 2006	#3
yyD70S Senior Member Join Date: Dec 2005 Location: Singapore Posts: 2,061	Re: What 77mm polariser for Sigma 10-20mm EX DG The B+W Kaesemann filter is sealed around the edges. IE, the polarizing foils that do their job are sandwhiched between two layers of glass and can be suseptable to moisture. The Kaesemann version protects them. However, I would suggest that if you are really into B+W, go for the MRC version. It's a newer version and the MRC coating is completely separate and is B+W's latest high scratch resistant coating. Easy to clean too! Sorry, but I have not tried the Hoya series. __________________ AI 16mm f3.5 \| AiS 35mm f1.4 \| AiS 50mm f1.2 \| AI 105mm f2.5