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Photo light calculator
Calculate!
Aperture f
f/0.7
f/1
f/1.2
f/1.4
f/1.8
f/2
f/2.2
f/2.5
f/2.8
f/3.2
f/3.5
f/4
f/4.5
f/5
f/5.6
f/6.3
f/7.1
f/8
f/9
f/10
f/11
f/13
f/14
f/16
f/18
f/20
f/22
f/28
f/32
Shutter speed
1/8000 sec
1/6400 sec
1/5000 sec
1/4000 sec
1/3200 sec
1/2500 sec
1/2000 sec
1/1600 sec
1/1250 sec
1/1000 sec
1/800 sec
1/640 sec
1/500 sec
1/400 sec
1/320 sec
1/250 sec
1/200 sec
1/160 sec
1/125 sec
1/100 sec
1/80 sec
1/60 sec
1/50 sec
1/40 sec
1/30 sec
1/25 sec
1/20 sec
1/15 sec
1/13 sec
1/10 sec
1/8 sec
1/6 sec
1/5 sec
1/4 sec
1/2 sec
1 sec
2 sec
4 sec
5 sec
6 sec
8 sec
10 sec
13 sec
15 sec
20 sec
25 sec
30 sec
40 sec
50 sec
60 sec
1 min
2 min
4 min
5 min
6 min
8 min
10 min
13 min
15 min
20 min
25 min
30 min
40 min
50 min
60 min
1 hr
2 hr
4 hr
5 hr
6 hr
8 hr
10 hr
13 hr
15 hr
20 hr
1 day
ISO sensitivity
ISO/ASA 100
ISO/ASA 160
ISO/ASA 200
ISO/ASA 320
ISO/ASA 400
ISO/ASA 640
ISO/ASA 800
ISO/ASA 1250
ISO/ASA 1600
ISO/ASA 2500
ISO/ASA 3200
ISO/ASA 5000
ISO/ASA 6400
ISO/ASA 12800
ISO/ASA 25600
ISO/ASA 51200
ISO/ASA 102400
Neutral Density
No ND filter
ND101: 1 stop 50%
ND102: 2 stops 25%
ND103: 3 stops 12.5%
ND104: 4 stops 6.25%
ND105: 5 stops 3.13%
ND106: 6 stops 1.56%
ND107: 7 stops 0.78%
ND108: 8 stops 0.39%
Camera settings
Aperture:
f/5.6
- average aperture, could be cheap kit lens
Shutter:
1
sec - long exposure, needs tripod
ISO:
100
ASA - lowest ISO, very little noise
No Neutral Density filter
Scene lighting: EV5
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
starlight to dim ambient light
moon eclipse to night home interior
neon lights to landscape after sunset
bright light to weak sun
bright daylight to direct sunlight
Pure Exposure Value: EV
100
=
4.97
(based on shutter & aperture)
Luminance:
4
cd/m²
=
0.37
cd/ft²
Luminance:
1.17 fL
(foot Lambert)
Explanation
Explanation: EV is an estimation of
how much light you need
for a decent photo with these settings.
This can be natural light (sun, moon), artificial continuous light (lamps) or strobes.
If your camera settings indicate EV10 and you actually have EV=15 in your scene, your photo will be overexposed. If your settings need EV=10 and you actually have EV=3 your photo will be underexposed.
Examples
Definition: 1s at f/1.0
: EV0
Sunny 16 Rule
: EV15
Shooting film in broad daylight
: EV12
Extreme ISO in dark places (bars at night)
: EV0
Long exposure in broad daylight
: EV12
References
Exposure value
Scantips: Exposure Value (photography)
Based on work at
web.forret.com
and
fredparker.com