EF-M 55-200mm f[removed]IS STM Optical Features/Specifications Image size 35mm film equivalent focal length (mm) Angle of view (horzntl, vertl, diagnl)

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Concave (converging) mirror Front of mirror f

Source URL: 12000.org

• Mirrors
• Focal length
• Length
• Virtual image
• Lens
• Plane mirror
• Real image
• Thin lens
• Camera lens
• Optics
• Geometrical optics
• Science of photography

ƒ/Calc Manual Warren Young ƒ/Calc Manual by Warren Young

Source URL: fcalc.net

• Length
• Circle of confusion
• Hyperfocal distance
• Depth of field
• Aperture
• F-number
• Camera lens
• Focal length
• Helios
• Optics
• Science of photography
• Geometrical optics

Underwater Magnifier ©2000 ReefNet Software Consider a symmetric bi-convex thin lens having radius R and index of refraction nL immersed in a medium having index of refraction n. From the Lens Makers’ Formula, its foc

Source URL: scubageek.com

• Science of photography
• Magnification
• Magnifying glass
• Camera lens
• Focal length
• Thin lens
• Refraction
• Numerical aperture
• Optics
• Lenses
• Geometrical optics

Domes, Diopters, and Depth of Field ©1999 ReefNet Software Wide angle underwater photography using a housed SLR requires the use of a hemispherical dome port. Unlike a flat water-air interface, which drastically reduces

Source URL: scubageek.com

• Lens
• Camera lens
• Focal length
• Magnification
• Angle of view
• Depth of field
• Corrective lens
• Wide-angle lens
• Secondary lens
• Optics
• Geometrical optics
• Science of photography

The Hyperfocal Distance ©2001 ReefNet Inc. Consider the arrangement shown, consisting of a perfect converging lens, an aperture of diameter D, a point object A on the lens axis, and film. When the image of A is perfectl

Source URL: scubageek.com

• Length
• Physical optics
• Hyperfocal distance
• Depth of field
• Circle of confusion
• Camera lens
• Focal length
• Lens
• Focus
• Optics
• Science of photography
• Geometrical optics

Perspective Compression by a Telephoto Lens: A Myth ©2002 ReefNet Inc. “Apparent perspective is a term used to describe the apparent distance between objects in the foreground and objects in the background in a photog

Source URL: scubageek.com

• Long-focus lens
• Wide-angle lens
• Camera lens
• Depth of field
• Focal length
• Angle of view
• Lens
• Distortion
• Magnification
• Optics
• Science of photography
• Geometrical optics

Supermacro Photography and Illuminance ©Les Wilk/ReefNet April, 2009 There are three basic tools for capturing greater than life-size images with a 1:1 macro lens --extension tubes, teleconverters, and supplementary clo

Source URL: scubageek.com

• Science of photography
• Teleconverter
• Camera lens
• Magnification
• Extension tube
• Focal length
• Lens
• Secondary lens
• Macrophotography
• Optics
• Photography
• Geometrical optics

Chapter 5 Offset-fed Parabolic Dishes Paul Wade W1GHZ ©1998,1999 Appendix 5A — Common offset dishes I’ve accumulated a collection of small offset dishes over the past few years. Many of them came without any informa

Source URL: www.w1ghz.org

• Mirrors
• Parabolic reflector
• Parabola
• Reflector
• Focal length
• Parabolic antenna
• Offset dish antenna
• Optics
• Satellite television
• Satellites

Field of Focus ©2001 ReefNet Inc. When you capture a camera image on film the amount of your subject that will appear in focus depends on several factors: lens focal length, lens aperture, subject-to-camera distance, th

Source URL: scubageek.com

• Length
• Hyperfocal distance
• Circle of confusion
• Depth of field
• Focal length
• Camera lens
• Magnification
• Lens
• F-number
• Optics
• Science of photography
• Geometrical optics