Captures: test of artificial and natural light + Limb.
In technology, the limb is the graduated edge of a circle or circular sector; we can see it on an astrolabe, a sextant, a graphometer, etc ..
In astronomy, the limb designates the edge of the disk of a star; the lunar limb is thus the edge of the disk of the moon.
Shooting is even more fun when you have any mechanical.
With a film camera, you just adjust the speed, the aperture and the focus.
In digital, all devices are equipped with automation.
When you use a camera in any manual while you almost never use this mode in digital, it bugs a little.
We are much slower to shoot at the beginning.
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With practice the settings come from themselves and it saves time.
The all manual forces to realize the mental gymnastics of the adjustment of the main parameters of the triangle of exposition to each shooting.
Thus, by dint of repetition, we know why we do things and the technique fades in favor of attention to what we photograph.
Once we understand how a camera works, the path of light in the lens to reach the sensor, and that we practice a little, use the manual mode becomes just natural (and when you study this in digital, it's easier afterwards for film cameras =)
Photography is a question of light.
To understand what determines the light input in my camera, we need to know only three elements: the iris, the shutter and the ISO sensitivity.
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