How_Cameras_Work Power Point Presentation
- 2. ⚫A digital camera captures a photograph when light rays enter through the lens and hit a sheet of semiconductor material. The light photons displace the electrons which cause an electrical charge. This charge defines the image. Sensor
- 3. ⚫A camera is like a man made version of the eye. The human eye has a pupil that dilates and contracts to controls how much light enters. In a camera this is the aperture ring. In a camera this aperture ring not only controls how much light enters but also how much of your image is in focus. This is called the depth of field. The Camera and the Eye
- 4. Aperture
- 5. ⚫ In order to capture a photo the camera needs a way to control the length of time its sensor is exposed to light. This mechanism is called a shutter. The shutter is located between the lens and the image sensor. Shutter Speed • To open the shutter we press the shutter release button. The length of time the shutter is open is determined by the shutter speed. Depending on what you are trying to capture as well as the amount of light present your will have to adjust your shutter speed
- 6. ⚫When taking a photo we need to find a balance between our aperture and shutter speed. Think of it like pouring water into a glass. If we have a very small opening to pour the water through it will take longer to fill up the cup. Aperture vs. Shutter Speed • If we have a very large opening to pour out of our glass will fill up quickly. The same is true with our aperture and shutter speed. Large opening faster shutter speed, smaller opening longer shutter
- 7. Too dark, shadows are missing textures Too bright, whites are missing textures Very bad- can’t fix in photoshop! Can usually be fixed in photoshop
- 8. ⚫There is one last setting that can be adjusted for the exposure of an image. This is the ISO; it can range from 25 to 3200. The lower the ISO rating the less sensitive the image sensor is and this creates a smoother image. ISO • The higher the ISO the more sensitive the sensor is which means it’s working harder to capture the image and has more “noise”. Most digital camera work best at a lower ISO such as 100.
- 10. Snapshots VS. Fine Art Photos
- 11. ● What is the difference between a snapshot and a fine art photograph? ● What are the characteristics of a snapshot? ● What are the characteristics of a fine art photograph!
- 12. Which is a snapshot vs fine art and why?
- 13. What is a snapshot? Snapshots are the visual recordings of daily life, with no artistic pretense. Usually they are unplanned, unprepared and spontaneous. Snapshots are often used to create personal history. They are interesting and important only to those who know the people and places in the photos and therefore have emotional connection to the subjects in the picture.
- 14. Snapshot photography started to boom when in 1948 the famous Polaroid camera was introduced. This camera was capable of taking images and processing them onto paper instantly. This proved very popular because a big problem with cameras back then was the time it took to develop a photo.
- 15. What is a fine art photograph? A photograph is an artistic interpretation of an event, an object or a person. Good photos speak to the viewer on an emotional level. And they speak to many people, not just one or two. Foremost, a photograph makes the viewer feel something. It doesn't have to be a profound message. But it should make the viewer feel an emotion or think about an idea or a concept.
- 16. Other things that a fine art images have are high quality and good composition. Taking fine art photographs requires skill, careful thought and experimentation. This is not easy, but it is worth pursuing. In order to create a good photograph, a photographer needs to have a solid understanding of the technical and aesthetic sides of photography.
- 17. “Every photographer is a snapshooter at heart. I don’t know of a fine art photographer, regardless of their pretentious, who didn’t also take snapshots.” -Michael Reichmann
- 18. To take photographs rather than snapshots… ● Think before you shoot (for example, get familiar with location, plan outfits and props.) ● Think about the composition (the placement of the objects in the image.) ● Think about the story or main idea. ● Take pictures of things you are truly interested in. ● Focus on the photographic process, not just pushing the shutter button.