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Quad Cities Photography Club

Explore the crucial aspects of lenses in photography with Dan Garrett's in-depth guide, covering focal lengths, f-stops, shutter speeds, ISO, and more. Learn how these factors influence exposure, focus, and image quality, and gain insights into selecting the right lens for your shots. Discover tips on lens care, cleaning, and maintenance, as well as the different types of lenses and filters available. Whether you're a beginner or an enthusiast, enhance your photography skills and understanding with valuable information on lenses and camera functions. Dive into the world of photography and capture stunning images with confidence!

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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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