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The Mechanics Behind the Lens
 

The Mechanics Behind the Lens

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    The Mechanics Behind the Lens The Mechanics Behind the Lens Presentation Transcript

    • The Mechanics Behind the Lens
    • The Exposure Triangle Aperture Shutter Speed ISO sensitivity
    • ISO Aperture Shutter Speed ISO sensitivity
    • Aperture & Shutter Speed Work together during a capture to control the amount of light entering the camera to obtain a properly exposed picture
    • at f/5.6 Shutter Speed 1/500 1/250 1/125 1/60 1/30 F/stop f/2.8 f/4 f/5.6 f/8 f/11 at 1/125 sec.
    • Aperture Mechanical opening that regulates how much light enters the camera through the lens.
    • Aperture The physical opening of the camera lens Called F-Stop Higher the “F” number the smaller the opening F/22 small F/1.2 big
    • Aperture Controls Depth of Field(DOF) F/18 DOF how much is in focus front to back. F/22 large DOF F/1.2 very small DOF F/5.6
    • Aperture Shallow DOF Allows you to isolate a subject from a distracting background taking the subject out of context
    • Aperture Long DOF Allows you to show the background or foreground to place your subject into context of what is in the surrounding area
    • Shutter Speed The time duration that the sensor can record light Measured in seconds 1/1000 fast 1/25 slow 2 very slow
    • Shutter Speed Controls motion Fast = Freeze Slow = Blur Speeds slower than 1/30 are subject to camera shake.
    • Shutter Speed Control camera shake by: Holding properly Bracing Using a support Finding more light to allow a faster shutter speed
    • Aperture and Shutter Speed Are inversely proportional Each have trade offs
    • Aperture and Shutter Speed Low f/stop means more light and a faster shutter but less DOF Slow shutter means more light and higher f/stop but can cause motion to blur
    • Aperture & Shutter Speed Automatic Setting Camera Adjusts to Best Exposure Can Be Modified for Specific Situations Sport Night Portrait Manual Adjustment
    • ISO Increases the sensitivity of the sensor. Faster shutter speeds Smaller apertures Trade off - NOISE
    • Picture Quality & File Size
    • Quality Image Quality refers to how much compression is applied to the photo to save on storage space. Use HIGHEST Low Quality Best Quality QUALITY ** Not all cameras have this setting
    • Image Size Refers to how many pixels wide by high the actual capture. 3872x2592 (FINE)* 2896x1944 (NORM)* 1936x1296 (BASIC)* Turns down the megapixels *Nikon D80 10.2mpx camera
    • Quality x Size = File Size Assume a 2gb card at highest quality File size Qty stored 4.8 mb ~ 266 fine 2.7 mb ~ 466 norm 1.2 mb ~ 503 basic
    • Shoot in Fine or Normal Format Your photo could end up on a poster, or the web, or a large format banner Don't choose RAW format
    • Let's Look at the Equipment D80 CoolPix
    • D 80 DSLR 10.2 mpx Interchangeable lenses Faster shooting Requires some additional training
    • D 80 Power Shots Remaining Mode Selector
    • Cool Pix Point & Shoot 8mpx Wide angle lens Comparatively easy to use Lightweight
    • Cool Pix Tips Avoid using the flash. Use the self timer's 2 second delay to help prevent camera shake in low light. Keep an extra set of batteries on hand (2 AA)
    • Cool Pix OK-Mode Menu Power
    • ?