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Quad Cities Photography Club

Quad Cities Photography Club. Camera 102 The Lens By The Numbers. The Numbers. Lens Function MM F Stop Camera Body Function Shutter Speed ISO. MM. MM is the unit of measure for a lens focal length. The distance from the lens focal point to the sensor. F-Stop.

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Quad Cities Photography Club

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  1. Quad Cities Photography Club Camera 102 The Lens By The Numbers Dan Garrett 11/2012

  2. The Numbers • Lens Function • MM • F Stop • Camera Body Function • Shutter Speed • ISO Dan Garrett 11/2012

  3. MM • MM is the unit of measure for a lens focal length. The distance from the lens focal point to the sensor. Dan Garrett 11/2012

  4. F-Stop • How much light is allowed to contact the sensor. • Affects: • Exposure • Focus / Depth of Field Dan Garrett 11/2012

  5. Shutter Speed • The length of time the light is allowed to contact the sensor. • Affects • Exposure • Motion Dan Garrett 11/2012

  6. ISO • How sensitive the sensor is to light • Affects • Exposure • Image Quality / Noise 100, 200, 400, 800, 1600, 3200, 6400, 12800 Most Light Least Light Dan Garrett 11/2012

  7. Final Picture Dan Garrett 11/2012

  8. Focus • Manual • Automatic • Continuous Automatic • Image Stabilization • Lens • Camera • AF Mode Selector Single Point, Dynamic Area, or Auto Area Dan Garrett 11/2012

  9. Lens Types • Prime • Zoom • Standard • Wide Angle • Telephoto • Macro • Tilt • Teleconverter Dan Garrett 11/2012

  10. Common Filters • Neutral Density • Graduated Neutral Density • Circular Polarizer (DSLR) • UV, Clear, Skylight • Many More • Sized to match lens. Dan Garrett 11/2012

  11. Changing Lens • Protect from contamination • Use lens caps • Camera pointed down • Align Marks Dan Garrett 11/2012

  12. Lens Hood • Blocks side light, glare spots • Matched to lens • Physical protection Dan Garrett 11/2012

  13. Lens Cleaning • Lens Pen • Cloth • Cleaner Solution • very sparingly • Apply to cloth, not lens • Blower • Never use compressed air • Hold so dust falls out Dan Garrett 11/2012

  14. Sensor Size Crop Factor • Increases effective MM Dan Garrett 11/2012

  15. Which lens? Dan Garrett 11/2012

  16. Which Lens? Dan Garrett 11/2012

  17. Which Lens? Dan Garrett 11/2012

  18. More • Camera Simulator http://camerasim.com/ • Wikipedia http://en.wikipedia.org/wiki/Dslr • Nikon http://www.nikonusa.com/en/index.page • Photo.net http://photo.net/learn/ • Nikkor Lens Glossary http://imaging.nikon.com/lineup/lens/glossary.htm#rf • Camera and Lens Reviews http://www.kenrockwell.com/ Dan Garrett 11/2012

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