25 Facts about DSLR

DSLR means Digital Single Lens Reflex. DSLR has a mirror system inside that lets you preview through the viewfinder the same image that is being captured on film/sensor. One thing that makes DSLR different is they are different from consumer point and shoot cameras or phones: detachable lenses. They have prime and zoom lenses. They also have kit lens. Prime lens only has one focal length. Zoom lenses has variable focal lengths. Kit lens has a basic lens that comes with a camera body in a kit usually not too expensive. For lens focal length if it is less then 21 mm the terminology would be extreme wide angle. If it is 21-35 mm it is called a wide angle. For 35-70 mm it is called normal. Then for 70-135 mm it is called medium telephoto. And finally for 135-300+ mm it is telephoto. The focus has AF (autofocus) and MF (manual focus). You have to learn how to properly focus a zoom lens. There is a thing called exposure that has ISO aperture and shutter speed. There is some metaphors to understand how exposure is determined such as window garden house and tanning. High ISO value means the sensor will be more sensitive to light. Which means it will take less light to get the right exposure. While choosing ISO you have to choose if you want lower ISO which means more available light or higher ISO which means less available light. You have to choose shutter speed based on the situation such as higher speed is to capture fast action. The shutter speed is how long the shutter is open. The 180-degree Shutter Speed rule is that the shutter in a camera is half a circle (180 degrees). So it means your shutter speed should be double your frame rate. Typical NTSC frame rate is 30 frames per second.

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