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public:organisation:photo:materiel [2019/08/01 22:57] rom1public:organisation:photo:materiel [2019/08/02 00:05] rom1
Line 65: Line 65:
 status: Discontinued\\ status: Discontinued\\
 year: 2001 year: 2001
 +
 +fov=
  
 ====   ==== ====   ====
 +
 +==== Field of view ====
 +
 +FOV = 2 * Atan( Diag / (2 * focale) )
 +
 +Pour le alpha 58 , le capteur fait 23,2 x 15,4 mm (format APS-C)
 +
 +soit une Diag de 27,85 (crop: //1.55x)//
 +
 +|Focal (mm)|10|18|35|40|50|55|70|75|210|300|
 +|Diag FOV (°) 1.55x|108.62|75.42|43.38|38.38|31.12|28.40|22.48|21.02|7.58|5.3|
 +|Diag FOV (°) 1x|130.4|100.5|63.4|56.63|46.8|42.9|34.3|32.2|11.8|8.2|
 +
 +{{https://www.pentaxforums.com/forums/members/77-ole/albums/596-illustrations/picture99095.jpg?nolink&}}
 +
 +\\
  
  
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