Translations:AY Honors/Digital Photography/Answer Key/20/en

• Angleofview 28mm f4.jpg

  28 mm lens

• Angleofview 50mm f4.jpg

  50 mm lens

• Angleofview 70mm f4.jpg

  70 mm lens

• Angleofview 210mm f4.jpg

  210 mm lens

• Wikipedia on focal length.
• Wikipedia on photographic lens - see section on Aperture and focal length