The Camera

The Camera

      The "Camera Obscura" effect is a hole that acts like a lens, focusing and projecting onto the wall of a dark room. This is shown by having a completely dark room and a tiny hole through one wall. Light is shown through the hole, focused, and the outside scene is shown upside down on the opposite wall. In the 17th century, Isaac Newton & Christian Huygens got one step closer to creating the modern day camera. They perfected the process of making high quality glass lenses and the understanding optics. Niepce created film which completed what the first successful photograph needed. A glass lens, a dark box, and film. Modern digital cameras work by having light pass through the lens, which exposes the film, which is the same exact thing Niepce's camera did. Digital cameras use an electronical sensor called CCD, which captures the image  in a computer memory device. 

Camera Modes

Auto Mode is when the camera completely controls flash and exposure. Program Mode is automatic-assit, so all you have to do is point and shoot. You can usually control flash and other camera settings. Portrait Mode is used for blurring out the background, the camera uses its fastest available lens setting (aperture). Sports mode works by the camera using its highest shutter speed, the goal is to freeze motion. In manual mode, the photographer must set the both the shutter and aperture. 

The Half Press

The importance of using the half-press button is it has faster respond time, encourages better composition, and more control over focus. As you press it the camera becomes "alive". 

Controlling Flash

The symbol with the flash cancelled out means that its a disabled flash, which gives no flash. The natural light gives more of a dramatic look. The symbol with the flash with the word auto by it, means auto mode and it will flash if the camera thinks it needs more light. It is enabled by default. 

Introduction to Exposure

If a photo has too much light to not enough light, the result or photo will not look real life. If its too much light, the photo will look washed out. Too little light will make the photo dark. You have to give the right amount of exposure to the picture.

The Universal Stop

The term "stop" is used in every aspect of photography to represent a relative change in the brightness of light. The stop for two planets is 2 and the stop for 4 is 4. 

Shutters and Aperture 

The affect that long shutters have is that it gives more light. A shorter shutter gives less light. The aperture controls how much light comes through. You can increase the amount of light by having a larger opening.