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Professor Claude Corvine, The professor of filmmaking at the Academy:

Claude illustrates in this film the most important decision that the director has to make, which lens that must be used? The choice of which depends on the nature of the photographed scene, and the dimensions that have to be shown. This is the center of what we are talking about today.

Claude says that the difference between the lens and the other is the size and dimensions of the figures that will appear in the picture; there are 3 types of lenses. Regular and large lens and the telephotographic Lens

1 - Regular lenses: The name is surprising to some of us, but it was named that way because in case we used one eye to see through it, and used the other to see with without a lens, the objects appear the same size with the same dimensions we could see by both eyes.

2 - If we wanted to enlarge the image in the eye of the camera, it requires the use of telephotographic lens; it is also called the distant lens.
3 - In case we wanted to minimize the things that could be seen by the naked eyes, using the wide lens is required.

However, these three lenses, as is common, couldn’t control the image more, techniques have been added to the video cameras which offer this process, through adding the ZOOM, a technique placed in all video cameras, and that what distinguishes the zoom, this technology will enable us to bring or remove the objects as we wish, ZOOM IN makes the objects closer while the ZOOM OUT moves the objects away. And show it smaller than real sizes.

Even though, the ZOOM technique is not what matters still, there are other things to distinguish between these lenses, and make the choice of any one of which could increase or decrease the quality of the film. This is to replace the spaces, and to make sure, it can apply the following example.

This will be done through the cooperation with the Academy, and Mary Roberts and Matthew Morhi, so we would take the images by the previous three lenses to see if there is any difference among them all.

Mathieu will stand behind Marie, a distance of 25 feet far, and we will take a shot from a regular lens, as the distance you can see between them appears closer than you would expect, and to maintain the dimensions of Mary’s face in the picture, with changing the distance between Mary and Matthew, where it appears too distant than the previous one, then the use of the broad lens is considered a must, where it is shown through applying that example. In this case, we have to move the Camera closer forward.

While through using the telephotographic lens, or the distant lens, in order to ensure the dimensions of the face of Mary in the picture, I have to attribute the camera backwards, where Mathieu seems very close to Marie, and even closer to her than in reality. The distance did not change.

As a conclusion, the distances between objects and the persons can be altered depending on number of facts, as through downsizing, compressing and expanding.

Remember what you will have to do, in the near future in order to catch something. This technology is not an option, but is the choice of innovation and creative, and helps to improve the quality of the film, which should be the fun part.