Nikon 16mm f/2.8D Fisheye
8 h) B8 j) R: F/ W2 oField of view (FOV) - horizontal, vertical, diagonal:
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( J% j( x) U9 o. S. q' u•Full-frame=16mm, HFOV: 137° | VFOV: 88° | DFOV: 170°
9 {1 h8 L8 _* Q9 \" h; Q2 p•1.5x=24mm, HFOV: 88° | VFOV: 58° | DFOV: 107°
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: A' V- e* P( d* i% |" cNumber of pictures required for a 360° panorama:
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•Minimum (full-frame): N, 5 images every 72° at 0° pitch, Z (18% overlap)
& z2 x d& \- w6 e/ g) O•Recommended (full-frame): N, 6 images every 60° at 0° pitch, Z (32% overlap)* y8 M' g4 l# a* @! b
•Minimum (1.5x): N, 8 images every 45° at -30° pitch, 8 images every 45° at +30° pitch, Z
4 W$ I4 k$ _, O歪把子后,对角线170度上扬5-10度,然后补地面。(根据计算,没有亲自实践仅供参考) |