# Fresnel Relations and the Sensitivity of a Camera

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1. Jun 7, 2015

### ecastro

Reflectance, according to the Fresnel Relations, is given by

$R \equiv \frac{I_r}{I_i}$,

and Transmittance is

$T = \frac{I_t \cos \theta_t}{I_i \cos \theta_i}$.

Do these values depend on the wavelength of light? For example, if I have a beam of white light rather than a monochromatic one, and I need the Transmittance and Reflectance of a specific wavelength.

Second, I need the value of the Reflectance and Transmittance of light with a specific wavelength be multiplied with a camera's sensitivity. But I only have the ISO value of the camera, I don't know what to do with it.

Lastly, what is the technique called in Image Processing where a gray image is subjected to deconvolution and convolution procedures to see the image on different wavelengths?