Tamron patented a new 17-50mm f/4 Full Frame E-mount lens with internal zoom

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Asobinet spotted a newly published patent that describes the optical design of this 17-50mm f/4 Full Frame E-mount lens with internal zoom:

  • Focal length: 17.520-48.483
  • F-value: 4.120
  • Half angle of view: 110.747-47.366
  • Image height: 21.633
  • Overall length: 134.456
  • Back focus: 18.462-50.815

 

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