Hyperfocal Distance Table, for a Circle of Confusion of 0.04578mm. Values given in Feet and Inches. Note that not all combinations of apertures and focal lengths are possible with the lenses available. The zone of acceptable sharpness commences at approximately half the Hyperfocal Distance. So for the 250mm at f64 focused at 70' 2", the zone starts at about 35'. As with depth of field, what constitutes 'sharp' varies between individuals. As was noted in the introduction to the Depth of Field tables, diffraction may be significant at the smallest apertures. The camera cannot be set to this precision!
|
Ft
|
55
|
65
|
80
|
105
|
135
|
180
|
250
|
|
2.8
|
-
|
-
|
164' 3"
|
-
|
-
|
-
|
-
|
|
3.5
|
-
|
86' 9"
|
131' 5"
|
226' 4"
|
-
|
-
|
-
|
|
4
|
-
|
75' 11"
|
115'
|
198' 1"
|
-
|
-
|
-
|
|
4.5
|
48' 4"
|
67' 6"
|
102' 2"
|
176' 1"
|
291'
|
517' 4"
|
-
|
|
5.6
|
38' 10"
|
54' 3"
|
82' 1"
|
141' 6"
|
233' 10"
|
415' 9"
|
801' 11"
|
|
6.3
|
34' 6"
|
48' 2"
|
73'
|
125' 9"
|
207' 10"
|
369' 6"
|
712' 10"
|
|
8
|
27' 2"
|
37' 11"
|
57' 6"
|
99'
|
163' 8"
|
291'
|
561' 4"
|
|
11
|
19` 9"
|
27' 7"
|
41' 10"
|
72'
|
119' 1"
|
211' 8"
|
408' 3"
|
|
16
|
13' 7"
|
19'
|
28` 9"
|
49' 6"
|
81' 10"
|
145' 6"
|
280' 8"
|
|
22
|
9' 11"
|
13' 10"
|
20' 11"
|
36'
|
59' 6"
|
105' 10"
|
204' 2"
|
|
32
|
-
|
-
|
-
|
24' 9"
|
40' 11"
|
72' 9"
|
140' 4"
|
|
45
|
-
|
-
|
-
|
-
|
29' 1"
|
51' 9"
|
99' 10"
|
|
64
|
-
|
-
|
-
|
-
|
-
|
-
|
70' 2"
|