Nikon 16mm f/2.8D Fisheye: Q$ t' w6 T! Q5 k
Field of view (FOV) - horizontal, vertical, diagonal:# b- `7 `$ @0 F2 b
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# I+ n* {4 c% Q" D•Full-frame=16mm, HFOV: 137° | VFOV: 88° | DFOV: 170°
. h8 ?3 ]' b* H' [( O9 N O•1.5x=24mm, HFOV: 88° | VFOV: 58° | DFOV: 107°
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8 i# \0 a" E+ q/ W3 c& JNumber of pictures required for a 360° panorama:
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. \6 @2 ~* M) c* P7 j•Minimum (full-frame): N, 5 images every 72° at 0° pitch, Z (18% overlap)5 P4 H' A% f; u- A+ M7 j
•Recommended (full-frame): N, 6 images every 60° at 0° pitch, Z (32% overlap)
* Z9 K% U- _2 o( w+ T•Minimum (1.5x): N, 8 images every 45° at -30° pitch, 8 images every 45° at +30° pitch, Z) y! A) z- V/ M2 V0 q* r- y+ }& s c
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) |