Sigma nộp bằng sáng chế 3 ống kính: 28-70mm F2, 135mm F1.8, 400mm F2.8

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Đây là các ống kính với khẩu độ lớn dành cho các máy full-frame.

Example 1

  • Focal length: 28.90-67.75
  • F value: 2.07
  • Angle of view: 76.74-33.8
  • Statue height: 21.64
  • Total length: 169.15-184.16
28 70mm F2 DG DN patent.jpg

Example 2

  • Focal length: 12.40-23.15
  • F value: 2.92
  • Angle of view: 122.82-84.4
  • Statue height: 21.63
  • Total length: 148.00-141.41
12 24mm F2.8 patent DG DN.jpg

Example 3

  • Focal length: 14.47
  • F value: 2.07
  • Angle of view: 114.30
  • Statue height: 21.63
  • Total length: 128.00
14mm F2 DG DN patent.jpg

Example 5

  • Focal length: 154.50-577.80
  • F value: 5.16-6.49
  • Angle of view: 15.68-4.18
  • Statue height: 21.63
  • Total length: 280.00-380.00
150 600mm DG DN patent.jpg

Example 6

  • Focal length: 388.00
  • F value: 2.88
  • Angle of view: 6.32
  • Statue height: 21.63
  • Total length: 330.00
400mm F2.8 DG DN patent.jpg

Example 7

  • Focal length: 131.00
  • F value: 1.85
  • Half angle of view: 18.04
  • Statue height: 21.63
  • Total length: 129.50
135mm F1.8 DG DN patent.jpg

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