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DEPTH-Of-FIELO
When you focus the camera on
a
subject,
there
is a
certain
distance in front and at the back
of the subject within which other
objects will also appear sharp.
This is known as the "Depth-of-
field",
and it varies with
the
lens aperture.
The smaller the
aperture, the greater the Depth-
of-field.
For
example,
when
the camera is focused at 4 feet
with a 13mm lens and the aper-
ture is f:4,
the
Depth-oF-Field
is from about
2'6"
to approx.
9 '
ft. "ft. Thus, the camera which
you have focused at 4ft.
with
a lens aperture of f:8, 1s always
in sharp focus all objects from
a distance of 1'10" to infinity.
This will save you the difficulty
of having to focus your camera
on moving objects.
DEPTH-OF-FIELD TABLE
YASHINON fl. 4/ I 3mm NORMAL LENS
D~P
£1.4
£2
£ 2.8
£4
£ S.6
£8
£11
£16
f 22
1ft
from-to
11"-
1l"-
U"-
10"-
100-
ft-
8'
T-
T-
l'
1'1"
1'1"
l'Z'
1'2"
1'4"
1'7
2':f
4'Z.
from-to
1'10'- 1'9"-
1'8'-
1'6"-
l'S"-
1'3"-
1'1"-
11"-
9"--
2'3"
2'4"
2'6"
2'9"
3'3"
4'7
8'U"
00
00
from-to
ZT-
2'S-
2'3"-
2'1"-
1'10'- 1'7-
1'4"-
1'1"-
11"-
3'6"
3'10'
4'3"
53"
7'S
20'6"
00
00
00
from-to
3'4"-
3'l"-
2'10'- 2'6'-
2'3"-
1'10'- 1'7-
1'3"-
1l"-
5
S'7"
6S"
9'4"
19'U"
00
00
from-to
4'-
3'8"-
3'4"-
2'11"-
2'6"-
2'1"-
1'8"-
1'3"-
1"-
6'S"
7'9"
10'
17'6"
00
00
00
00
from-to
S'8'-
S'1"-
4'5"-
3'8"-
3'2"-
2'S-
l'U"- l'S-
1'-
13'S'
18'9"
40'8"
00
00
00
20
from-to
S'6"-
7'U"- S'll"- 4'9"-
3'9"-
2'10'- 2'2"-
1'7"-
1'-
61'3"
00
00
00
cia
00
00
00
from-to
19'9"- 13'11"- 9'11"- 6'11"- f4'f~- 3'S"-
Z6"-
1'9"-
1'2"-
00
00
00
00
00
00
00
YASHINON fl.4/38mm TELE LENS
~ P
£1.4
£2
£ 2.8
£4
£ S.6
£8
£11
£16
3.5ft
from-to
3'S"-
3'S"-
3'4"-
3'3"-
3'2"-
3'2"-
3'-
2'10'-
3'7"
3'7"
3'8"
3'S"
3'9"
3'U"
4'2"
4'6"
S
from-to
4'10"-
4'9"-
4'9"-
4'7"-
4'6"-
4'3"-
4'1"-
3'9"-
5'2"
S'2"
S'3"
S'S"
S'S"
S'12"
6'5"
7'5"
10
from-to
9'5'-
9'3'-
8'11"-
S'7"-
8'1"-
7'6"-
6'10'-
6'-
10'T
10'U"
11'3"
12"
13'
15'
IS'6"
30
15
from-to
13'9"-
13'3"-
12'9"-
12'-
11'1"-
9'12"-
8'10'-
7'6"-
16'5"
17'1"
18'2"
20"
23'1"
30'1"
48'6"
00
30
from-to
2S'6"-
24'-
22'2"-
19'U"-
17'T-
14'11"- 12'7"-
9'11"-
36'S'"
40'1"
46S"
60'6"
10Z
00
00
00
00
from-to
169'-
l1S'-
84'7"-
S9'2"--
42'3"-
29'T-
21'6"-
14'9"-
00
00
00
·00
00
00
00
00
;
~t;J,
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