Nikon 16mm f/2.8D Fisheye
9 j* w; W/ z& p' G( wField of view (FOV) - horizontal, vertical, diagonal:
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•Full-frame=16mm, HFOV: 137° | VFOV: 88° | DFOV: 170°! C* X2 o# w1 h$ M/ R
•1.5x=24mm, HFOV: 88° | VFOV: 58° | DFOV: 107°
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Number of pictures required for a 360° panorama:9 H6 ~3 j9 `. q& S9 O5 U8 T: c, G
/ g4 ?6 ~3 |' u7 y0 ?8 X& g: g•Minimum (full-frame): N, 5 images every 72° at 0° pitch, Z (18% overlap)
' }8 u+ J% k2 Z( ?; @1 s+ Q•Recommended (full-frame): N, 6 images every 60° at 0° pitch, Z (32% overlap)
2 k. d) Z1 ^2 ]2 j; m•Minimum (1.5x): N, 8 images every 45° at -30° pitch, 8 images every 45° at +30° pitch, Z) ?8 b# b4 w4 h x" q. Q
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) |