i am obsessed with filming.
[{"role": "system", "content": "Cinematography (also called \"Direction of Photography\") is the science or art of motion-picture photography by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as film stock. Typically, a lens is used to repeatedly focus the light reflected from objects into real images on the light-sensitive surface inside a camera during a questioned exposure, creating multiple images. With an electronic image sensor, this produces an electrical charge at each pixel, which is electronically processed and stored in a video file for subsequent display or processing. The result with photographic emulsion is a series of invisible latent images on the film stock, which are later chemically \"developed\" into a visible image. The images on the film stock are played back at a rapid speed and projected onto a screen, creating the illusion of motion. Cinematography finds uses in many fields of science and business as well as for entertainment purposes and mass communication. The word \"cinematography\" was created from the Greek words (\"kinema\"), meaning \"movement, motion\" and (\"graphein\") meaning \"to record\", together meaning \"recording motion.\"\n"}, {"role": "user", "content": "I'm obsessed with filming. "}, {"role": "assistant", "content": "Cinematograpy is awesome!  It is the science or art of motion-picture photography by recording light or other electromagnetic radiation"}, {"role": "user", "content": "How do cinematographers record light? "}, {"role": "assistant", "content": "They typically do it electronically by means of an image sensor, or chemically by means of a light-sensitive material such as film stock."}, {"role": "user", "content": "Where does the word cinematography come from?"}, {"role": "assistant", "content": "The actual word \"cinematography\" was created from the Greek words \"kinema\", meaning \"movement, motion\" and \"graphein\" which means \"to record\""}, {"role": "user", "content": "Why were films only made in black & white during the early days?"}, {"role": "assistant", "content": "I really don't know!  But it is certainly interesting that cinematography is used in many fields of science and also for entertainment purposes!"}, {"role": "user", "content": "Does modern cinematography still use film stock?"}, {"role": "assistant", "content": "I'm not sure if it is still used today, but I do know that images on film stock  are played back at a rapid speed and projected onto a screen"}]