Camera Must know beyond point and shoot Performance characteristics

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Presentation transcript:

Camera Must know beyond point and shoot Performance characteristics Some technical understanding

zoom ratio 10 x 15 10:1 Zoom ratio 15 mm at wide angle

Exposure Image looks natural and/or appropriate Consistent between scenes Overexposed Too bright, loss of detail in bright areas Underexposed Too dark, loss of detail in dark areas Washed out, noisy

Exposure Zebra Striping Zebras at 100 units -Zebras at 70 units 100 IRE units Loss of detail in zebra areas Can be used for consistency across scenes Can have zebra-ing in the picture -Zebras at 70 units Average caucasian skin tone Adjustable (menu item)

Exposure Auto Iris Experiment Useful to SET exposure Return to manual Use momentary button Experiment Make test Bracket compare

Macro Macro minimum focus distance (2 feet ?) shoot close lens becomes a fixed focal length lens.

Iris size of opening--amount of light f/1.2 to f/22. Iris opening The lower the number, the larger the aperture. 1 stop doubles or halves light F-stop = lens focal length (mm)/aperture (mm)

Depth of Field Depth of Field The area in which objects are seen in focus. Shallow Deep

Depth of Field Factors Focal length Iris opening Distance Telephoto--shallow Wide angle--deep Iris opening Small #--shallow Large #--deep Distance Greater distance--deeper

Performance Characteristics of the Lens Every lens makes images look a different way know the characteristics to create effective images

Wide Angle Lens-characteristics Field of View --wide vista. Distortion Expansion Things close to the camera--look large Things short distance away--look quite small.. Barrel distortion

Wide Angle Lens-characteristics Movement good lens for camera mvt Deemphasizes camera wobbling and bumps less magnification Good focus Deep Depth of Field

Normal Angle Lens-performance characteristics Field of View normal vision Distortion Movement good Depth of Field in between

Narrow Angle Lens -characteristics Field of View --Narrow Distortion magnification compression

Narrow Angle Lens -characteristics Movement Camera movement extremely difficult Magnifies jiggle Focus critical Depth of Field shallow Selective focus Rack focus

Lens Table Focal length Vista Depth of Field Focus MVT Distortion Long telephoto narrow shallow critical poor compression normal Average In between ok none Short Wide angle wide Deep Easy/ deep best Barrell and expansion

- Deep depth of field - several actions on several planes Using Depth of Field - Deep depth of field - several actions on several planes - Shallow depth of field - isolates

Filter Wheel 3200 5600 5600 ND studio, reddish tinge outdoor, bluish tinge 5600 ND

Neutral Density ND = Neutral density reduces light level without effecting color quality of light. illumination too high decreasing depth of field.

Diffusion Filter -soften hard lines in shot-- dreamy effect -can be done with filter -can be done with stocking, or saran wrap/vaseline