Nikon 16mm f/2.8D Fisheye
. j8 m1 m) g; V* H+ |" BField of view (FOV) - horizontal, vertical, diagonal:. h/ H4 b/ v* J3 c$ q
7 e. u1 y7 z) w- _# `
" n/ t( _( J, P3 w' o•Full-frame=16mm, HFOV: 137° | VFOV: 88° | DFOV: 170°0 n3 k6 E: g l ~5 F1 V" Y
•1.5x=24mm, HFOV: 88° | VFOV: 58° | DFOV: 107°
8 m+ ~& `4 c+ o, \
, C$ s. _! @5 a9 p1 j! p! KNumber of pictures required for a 360° panorama:
( H; f9 w2 }& t/ I' V& B( @, i# ^
•Minimum (full-frame): N, 5 images every 72° at 0° pitch, Z (18% overlap)! M$ t6 a! b1 A+ e$ C& t m4 ^
•Recommended (full-frame): N, 6 images every 60° at 0° pitch, Z (32% overlap)
5 r6 v+ s/ \4 ^" ]1 R/ K* Y, T•Minimum (1.5x): N, 8 images every 45° at -30° pitch, 8 images every 45° at +30° pitch, Z; O8 a( ~6 a9 [- ~* L2 `
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) |