• Aldridge Wrenn posted an update 9 months, 2 weeks ago

    We are now living in a time of fantastic technological advancements inside the visual technology fields. Photo camera models renew themselves every year using the commitment of more mega-pixels and new features. But, as we think about it for a moment, the photo that comes beyond much of our cameras normally has strengths and weaknesses that persist through every one of the successive models that undergo our hands.

    Cameras plus general all photographic cameras are, despite all the marketing buzz, still restricted machines. As an example, they register our universe with sensors that may only capture half the tonal range that the eyes can perceive.

    Imagine your self on a sunny day facing a good looking landscape. Below you, around you, you can observe the rich lush green vegetation; above you, the brilliant blue skies. Even as we contemplate this scene, our eyes can perceive it’s richness, information in the shadows and also the bright clouds above. The dynamic range that our eyes can process, which matches from your darkest towards the brightest areas, is enough to contain the majority of the rich detail in this scene.

    Now take your photo camera and snap a shot from your position including both the vegetation and the sky. The result is very telling. Depending on the parameters that either the camera otherwise you choose, some detail of the scene will be gone from your result. Either aspects of the vegetation will blend to black and lose all detail or aspects of heaven will blend to white and lose all detail.

    To conclude, the retina in the camera, its digital sensor, which captures the lighting from the scene, is not able to getting through a tonal range the size of our eyes can. It may only capture the complete detail in a smaller range which can be positioned at different levels of brightness with the camera itself or us. Because of this, within a scene like the one described above which has a large contrast, it eventually ends up capturing the detail only at the highlights and mid-tones, or mainly at the mid-tones, or mainly at the shadows and mid-tones. It really cannot capture simultaneously the full detail in the scene from the darkest to the brightest areas.

    That is of course a simplification of an scenario that we could describe in far more detail. But the conclusion remains the same. Whenever we look at the final photo, we understand that what we remember seeing with our eyes just isn’t exactly what the photo shows. That richness of detail everywhere is fully gone. And that is just one of the restrictions that most Photo cameras share. We could pursue to describe many others in connection with color precision along with other places that cameras just cannot cope with the depth and richness on the planet around us.

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