- Cuts Out UV Rays Below 390 nm
- Cuts Out IR Rays Above 700 mn
- Retains Visible Light Spectrum
- Reduce Effects of Atmospheric Haze
- Clearer and Sharper Pictures Outdoors
The Hoya 58mm UV & IR Cut Filter is a specialized filter that can cut both UV rays below 390nm and IR rays above 700mn leaving just the light rays in the visible spectrum passing through the filter and into the camera.
This filter is used on a digital camera and video, which do not have an IR protection filter toward an image sensor or were remodelled. This is important because unfiltered CCD and CMOS sensors are extremely susceptible to UV and IR rays just outside the visible spectrum which can have a very negative impact on image quality.
Please note: The UV & IR Cut filter is intended for use with digital SLR cameras and cine cameras that do not have an IR filter installed in front of the sensor. Colour balance effects can occur when this filter is used with cameras that have an IR filter installed in front of the sensor. Please consult your camera’s owner’s manual before use.
The Hoya UV & IR light transmission curve shows the sharp-cut nature of the filter glass and coatings as well as the consistent light transmission in the visible spectrum. This curve demonstrates a more even visible light transmission than the closest competitor. This means that sharper images with more depth and finer, richer colour gradations are possible with the Hoya UV & IR Cut filter.
The Hoya UV & IR Cut filter is Available in Different Sizes:
The effect of the filter is achieved mainly through the multi-layer coatings on the surface of the filter. Hoya begins with crystal clear, colourless optical glass and then bonds coating to this filter that blocks both UV and IR light rays outside of the range mentioned. There is light incidence angle dependence in the transmission factor because the overlayer is thick, so this filter doesn’t suit use by a wide-angle lens. It is suitable for heavenly body photography.
An Important Note Regarding Wide-Angle Lenses:
Increasing the angle of incidence, meaning light rays entering the filter from an extreme angle as is the case with super-wide and ultra-wide angle lenses, leads to an increasing colour shift as the angle increases. This is based on the physics of light and the nature of the coatings. All UV-IR cut filters have the same properties in this regard. It is not recommended this filter be used with lenses having a field of view greater than 60 degrees.
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