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Linear Polarizer vs Circular Polarizer: What's the difference?
A question we often get is: "Should I purchase a linear polarizer or a ci…
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The RotaPola
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Incredibly Flat - Clear Protective Filter for Canon Cine-Servo 17-120 mm Lens
Protecting the Canon Cine-Servo 17-120 Zoom
Our newest clear filter,…
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What is a Diopter?
A Close-Up Lens is NOT a Diopter!
but everyone calls them that . . .…
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