CAFTG4X4SET3

FTG4X4SET3

Cavision

This 4 x 4" Glass Filter Set from Cavision includes four 101.6 x 101.6mm filters that can be used to provide various enhancements to your images. They are each 4mm thick, and depending on the filter holder system used, can be applied individually or in combination with each other. The Cavision 4 x 4" Linear Polarizer Filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. This results in a noticeable increase in the saturation of skies and foliage, as well as clearer imagery when photographing in hazy conditions. A linear polarizer differs from a circular polarizer in that it does not support use of autofocus or auto exposure camera functions. For these reasons, this filter is best suited for use with manual cameras, such as view cameras, that are not dependent on internal electronic mechanisms to determine focus or metering settings. The Cavision 4 x 4" Blue 0.3 Graduated Filter can be used to add blue to a hazy or colorless sky. When used instead of a polarizer filter to enhance the sky within an image, the desired effect can be applied only to the sky, without any unwanted polarization or additional contrast to any part of the image. The filter is densest at the edge and tapers to clear by the middle, with a soft-edged line of transition between the dense and clear areas. This filter has up to a 0.3 density and reduces light from entering a lens by up to one stop. The Cavision 4 x 4" Orange 0.3 Graduated Filter can be used to add orange to a hazy or colorless sky. When used to enhance the sky within an image, the desired effect can be applied only to the sky, without any unwanted changes to any other part of the image. The filter is densest at the edge and tapers to clear by the middle, with a soft-edged line of transition between the dense and clear areas. This filter has up to a 0.3 density and reduces light from entering a lens by up to one stop.None Compatible with filter holders that can accommodate 3mm thick, 4 x 4" rectangular filters.None Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.None Polarizing filters arrange, and filter, directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of the light.None Clears up haze in distant landscapes and provides more saturated, vivid colors.None Strongest effect when used at a 90 angle from the sun.None Recommended when not using in-camera exposure metering or autofocus.None Non-coated.None 1.5 to 6x filter factor reduces exposure by 0.6 to 2.6 stops.None Glass construction.None Microfiber filter cloth included for filter maintenance as well as a soft pouch for storage and transport.