Yashica 8T2 - Depth-Of-Field

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,