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We know that you have choices when you shop, but here is the Roberts difference:
- We have been family owned and operated for over 60 years!
- We treat our customers like family and we work to build a relationship with you that is based on understanding and meeting your needs as a photographer.
- Customer service is our NUMBER ONE priority! Don't believe us? Check out the over 6300 5 Star reviews from customers that have purchased with us!
- We have a team of the most knowledgeable professionals in the business and many of them have been with us for over 20 years!
- We have one of the largest selections of used camera equipment in the country!
Finding The Right Gear Can Be Hard
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About the B+W Circular Polarizer (52mm)
Highly efficient standard circular polarizing filter for all cameras with beam splitters in the light paths of their TTL exposure meter and with autofocus lenses. Circular polarization has the same pictorial effect as linear polarization, but allows for proper exposure metering and/or autofocus distance settings.
Linear and circular polarizers both consist of a linear polarizer foil but differ in their construction in the following way. Modern SLR cameras have have a beam-splitting prism that sends part of the incoming light to the meter and part to the viewfinder. The effect is that the light entering the meter is partially polarized by the beam-splitter. A linear polarized placed on the lens of such a system will act as a second polarizer and block light to the meter by a degree dependent on the angle between the prism and the polarizer on the lens. The result is incorrect exposure/aperture values from the meter. The circular polarizer circumvents this problem through the addition of a 1/4-wave retarder, or delay, foil. This ensures that the linearly polarized light is changed into a rotation that appears unpolarized to the meter, resulting in proper exposure/aperture readings.