In digital camera applications observed color is formed by light reflecting from or transmitted through a medium, observed by a sensor. The final digital value output by a camera is a composite of the spectrum of emitted light, reflectance (or transmittance) properties of a material and spectral response of the observing sensor. In this paper, we demonstrate how even small changes in any of the mentioned properties can cause clearly visible and sometimes unwanted changes in the digital numbers produced by a camera. Additionally, we explore this problem from the point-of-view of a 3D 360° camera, show how these problems are even more severe in this particular case as well as propose a solution relying on accurate measurement of both light as well as camera's response to it.