Photography Basics: Definitions, ISO, Aperture, Shutter Speed & 7 Rules
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Photography is defined as the art of drawing by light using a camera to capture images. Key photographic concepts discussed include aperture, shutter speed, exposure, and the 7 golden rules of composition such as rule of thirds and balancing elements. The document provides an introduction to photography basics and techniques.
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Photography Basics: Definitions, ISO, Aperture, Shutter Speed & 7 Rules
- 1. Photography by: Mohanned Ezz and Toka Amr
- 2. Definition of Photography • The art of drawing by light
- 14. Aperture
- 17. Shutter Speed
- 20. Exposure
- 23. 7 Golden Rules • Rule of Thirds • Balancing Elements • Leading Lines • Symmetry and Patterns • Viewpoint (angle) • Background • Depth (levels)
- 24. Any Questions?
- 25. Thank you!
Editor's Notes
- Since the dawn of photography, cameras have captured and stored images on glass plates or on film. Today, digital cameras capture the images on a nifty piece of technology – the image sensor. The image sensor is made up of millions of light sensitive photodiodes set on a grid, where each photodiode records a tiny portion of the image as a numeric value that corresponds to a specific brightness level, which is then used to create your image. Image sensors, whether they are CCD or CMOS, vary from camera to camera but they’re basically the same, and the megapixel count shouldn’t be a priority in the decision-making process when buying a camera. Why? Because the size of the sensor is actually more important that the number of megapixels.
- It is impossible to make an independent change in one of the elements and not obtain an opposite effect in how the other elements affect the image, and ultimately change the EV.
- International Standards Organization
- ISO, allows for shooting in lower light situations, but you increase the amount of digital noise inherent in the photo. The lower the ISO rating, the less sensitive the image sensor is and therefore the smoother the image
- Lower ISO ratings produce color-accurate, smooth and aesthetically appealing images… and this requires ideal lighting conditions.
- A lens’s aperture is the opening in the diaphragm that determines the amount of focused light passing through the lens.
- how fast the curtains at the film plane open and close.
- how fast the curtains at the film plane open and close.
- Auto Bracketing is an exposure technique whereby you can ensure that you have the optimal exposure by taking at least three (3) exposures of the exact same composition
- overexposure is when the information in the highlights is effectively Underexposure is pretty much the same concept; except in this case there is no image information contained within the shadows