Last update: 2023-07-22

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   焦点距離：画角

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   9 mm	135°		50 mm	47°
   10 mm	130°		70 mm	34°
   11 mm	126°		85 mm	29°
   12 mm	122°		90 mm	27°
   14 mm	114°		100 mm	24°
   16 mm	107°		105 mm	23°
   17 mm	104°		135 mm	18°
   18 mm	100°		180 mm	14°
   20 mm	94°		200 mm	12°
   24 mm	84°		300 mm	8.2°
   28 mm	75°		400 mm	6.2°
   35 mm	63°		500 mm	5.0°
   36 mm	62°		600 mm	4.1°
   40 mm	57°		800 mm	3.1°

2. ---

   ND値

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   光学濃度		透過率
   ND 0.3	ND 2	1/2
   ND 0.6	ND 4	1/4
   ND 0.9	ND 8	1/8
   ND 1.2	ND 16	1/16
   ND 1.5	ND 32	1/32
   ND 1.8	ND 64	1/64
   ND 2.1	ND 128	1/128
   ND 2.4	ND 256	1/256
   ND 2.7	ND 512	1/512
   ND 3.0	ND 1024	1/1024