User:Prasad.periya/Books/Focal Length

Photography

 * Focal length
 * 135 film
 * 35 mm equivalent focal length
 * 35 mm film
 * Angle of view
 * Camera lens
 * Cardinal point (optics)
 * Collimated light
 * Crop factor
 * Curved mirror
 * Depth of field
 * Dioptre
 * F-number
 * Field of view
 * Film format
 * Focus (optics)
 * Full-frame digital SLR
 * Image
 * Lens (optics)
 * Magnification
 * Mirror
 * Normal lens
 * Optical power
 * Pinhole camera
 * Pinhole camera model
 * Radius of curvature (optics)
 * Rectilinear lens
 * Refractive index
 * Sign convention
 * Sphere
 * Thin lens
 * Wide-angle lens