Focal length (mm)
|
Pinhole diameter (mm)
|
f-stop
|
Exposure factor for f/16
|
10
|
0.14
|
70
|
20
|
20
|
0.20
|
100
|
40
|
30
|
0.24
|
125
|
60
|
40
|
0.28
|
140
|
80
|
50
|
0.31
|
160
|
100
|
60
|
0.34
|
180
|
125
|
70
|
0.37
|
190
|
140
|
80
|
0.40
|
200
|
160
|
90
|
0.42
|
214
|
180
|
100
|
0.45
|
220
|
190
|
150
|
0.54
|
280
|
300
|
200
|
0.63
|
318
|
400
|
250
|
0.70
|
360
|
500
|
300
|
0.78
|
380
|
560
|
350
|
0.84
|
418
|
700
|
400
|
0.89
|
450
|
800
|
|
Nessun commento:
Posta un commento