Lytro Camera Understanding
Lytro Camera, a digital camera allows focusing after shooting, attracts a majority of photographers and enthusiasts. In this post, I will explain further techniques of Lytro camera to own this exceptional effect.
Lytro Camera: Overall introduction
Simply, shooting with Lytro Camera is quite similar to shooting RAW photos of other digital camcorders. It means that the sensor keeps every photo-related information under the initial and unprocessed forms.
If RAW photos permit you to customize colors, bright light and sharpness, photos of Lytro Camera are more notable. Thus, it enables users to select the blurred or sharp parts.
First of all, you need to understand clearly what extend our eyes and camera recognize images and objects. We can see everything because it emits light rays and these straights into our eyes or camera.
It means that we see directly anything, we will recognize it most and other surroundings will become blurred. Cameras are the same human’s eyes. When you focus on any point, only that one is the sharpest, and other surroundings are blurry.
Interesting, Lytro camera can record more light rays, namely colors, intensity and direction of each light ray.
It only records light from a given point/ object but also others (in front and behind it) in frames with the maximum light rays of 11 megarays.
Photos of Lytro camera allows users to choose which points need sharpening after shooting. Thus, with normal cameras, the intentional points will be sharp after focusing.
On the contrary, Lytro camera photos record total light rays. At this time, you can use a computer software (included with Lytro camera) to opt for the sharpest and the most blurred points. All aforementioned light rays are generally called Light Field.
Brief Overview of Light Field
“Light Field” term first appeared in 1936 by a Russian scientist named Alexander Gershun. This term is very a terminology for Lytro camera which Ren Ng invented when he was studying at Stanford University (US).
In other cases, Light Field and RAW shooting are similar. When you shoot as the RAW format, the camera will record all light rays through its sensor without processing such as white balance, color customizing or enhancing sharpness because of these processes afterward.
Similarly, the Lytro camera will record all light rays through tiny sensor without processing anything.
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In his Ph.D thesis, Ren Ng mentioned briefly the applications of the light field method inside the Lytro camera.
“Formerly, to shoot light field, it’s necessary to have a lab and 100 cameras attached a supercomputer”. Nowadays, you can shoot Light field photos only with a Lytro camera which can record up to 11 megarays.
However, megaray isn’t really equal to megapixel. The final image quality of the Lytro camera may be much lower than that of normal digital cameras. But Lytro can output 3D images.
What’s Light Field?
According to the knowledge of photographyprof.com, Light Field is a fundamental concept of optics. It reflects how an object is visible. The multi-directional beam of light of the object is passed through every point in space. Normal cameras can’t record light field.
How is the light field recorded?
To record light field, we need a special sensor which functions recording colors, intensity, and vector direction of light rays from different angles so as to create convenience for later software-based processes.
With the supplementary data, the size of a light field photo will be higher than a normal one.
What are light field photos different?
They allow photographers and viewers to choose the sharp points after shooting, change the object’s’ background and exchange between two-dimensional and three-dimensional images perfectly.
Hence, these photos become more responsive and livelier than ever. Ren Ng called it “the living pictures”.
I guess you want to own a super Lytro Camera. Let’s take a thorough look at further!
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