How a Camera Catches Light
Have you ever wondered how a camera takes a picture? It all starts with light. Light bounces off everything around us. When you look at a red flower, light bounces off its bright petals. You cannot see the flower in a room that is pitch black. A camera needs that same bouncing light to make a picture.
A camera has a clear glass piece in the front called a lens. When you point a camera at the flower, light travels through the lens. The lens bends the light and guides it straight inside. Inside a digital camera, a special electronic part waits behind the lens. When the light hits this part, the camera records the shapes and colors. In a tiny split second, it saves the picture.
The amount of light makes a big difference. In a sunny yard, lots of light enters the lens. The photo of the flower will look bright and clear. In a dim hallway, very little light enters. The photo might look dark or fuzzy. Photographers always check the light before they press the button.
You can also choose what fits inside your picture. This is called framing. When you look through the screen, you might want to show the whole garden. Or you can move closer so the screen shows just one petal. By pointing the lens and catching the light, you decide what your picture will be.
- lens:
- A clear piece of curved glass that bends and guides light.
- electronic:
- Having tiny parts that use electricity to do a job.
- dim:
- Not bright; having only a small amount of light.
- photographers:
- People who take pictures using a camera.
- framing:
- Deciding what will be seen inside the edges of a picture.
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Preview questions from this passageShowHide
- 1What does a camera need from the world around us to make a picture?
- 2Why can you not see a red flower in a room that is pitch black?
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About this explanatory article passage for 2nd Grade
“How a Camera Catches Light” is a explanatory article reading passage about how cameras work, written for 2nd Grade. It takes about 2 minutes to read (234 words) and comes with an interactive quiz and a printable worksheet with comprehension questions and an answer key.