Light Exposure
At a Fixed ISO, you got a lens and camera; you need to consider a whole thing about what speed for what amount of light you encounter through a day.
Here is calculator I used: http://www.calculator.org/calculate-online/photography/exposure.aspx
(if you are using a DSLR, you can just use any ISO, such as 1600, 3200, even 6400 sometimes for extra 3 stops of light balance if needed, but for film camera, you can't change for faster film before you finish a roll.)
EV number quick calculation table
L- | L- | ||||||||||||||||||||||||||||||||||
EV | -2 | -1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | -1 | -2 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
L+ | L+ | ||||||||||||||||||||||||||||||||||
ISO | 12800 | 6400 | 3200 | 1600 | 800 | 400 | 200 | 100 | 200 | 400 | 800 | 1600 | 3200 | 6400 | 12800 | ||||||||||||||||||||
L+ | L- | ||||||||||||||||||||||||||||||||||
S | 60“ | 30” | 15“ | 8” | 4“ | 2” | 1“ | 2 | 4 | 8 | 15 | 30 | 60 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 | |||||||||||||||
L+ | L+ | ||||||||||||||||||||||||||||||||||
F | 1 | 1.4 | 2 | 2.8 | 4 | 5.6 | 8 | 11 | 16 | 11 | 8 | 5.6 | 4 | 2.8 | 2 | 1.4 | 1 | ||||||||||||||||||
Count | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
in Av, Tv, Sv mode.
125 1i | Tv | 8 | 15 | 30 | 1/60 | 1.4 | 2 | 2.8 | 4 | 5.6 | 8 | 11 | 16 | film | 2i | +1 | 4i | +2 | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
f2.8 1i | Av | -1 | 128i | 64i | 32i | 16i | 8i | 4i | 2i | 30 | 60 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 | Digi | f8 | -3 | f4 | -1 | f1.4 | +2 | ||||||||||
L- | L- | ||||||||||||||||||||||||||||||||||
EV | -2 | -1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | -1 | -2 |
L+ | L+ | ||||||||||||||||||||||||||||||||||
ISO | 12800 | 6400 | 3200 | 1600 | 800 | 400 | 200 | 100 | 200 | 400 | 800 | 1600 | 3200 | 6400 | 12800 | ||||||||||||||||||||
L+ | L- | ||||||||||||||||||||||||||||||||||
S | 60” | 30“ | 15” | 8“ | 4” | 2“ | 1” | 2 | 4 | 8 | 15 | 30 | 60 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 | |||||||||||||||
L+ | L+ | ||||||||||||||||||||||||||||||||||
F | 1 | 1.4 | 2 | 2.8 | 4 | 5.6 | 8 | 11 | 16 | 11 | 8 | 5.6 | 4 | 2.8 | 2 | 1.4 | 1 | ||||||||||||||||||
Count | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
My Personal Experience
EV number is amount of lux in environment, for chart refer to http://www.fredparker.com/ultexp1.htm
Lens requirement after 10pm
- for under EV3, f1.4 lens required with ISO 800, achieve 1/30sec
- with f1.8 lens, at ISO 1600, survive 1/40 sec
EV 1 and 0: for night sky with stars
- on tripod, ISO 200, 30 sec, f8. (EV 0)
- hand hold, ISO 6400, 1/30 sec, f2.8 (EV 1)
EV 2 (Light off): for screen light or almost tiny lights or indirect street light
- with f1.7 lens, at ISO 1600, I shot at 1/20
- with f1.4 lens, at ISO 800, you are risking at 1/15 sec
- with f1.2 lens, at ISO 200 (a common negative), shoot at 1/4 sec
- with f1.2 lens, at ISO 400 (a common negative), shoot at 1/8 sec
EV 3 (night driving): far street nights, small room light
- with f1.2 lens, at ISO 200 (a common negative), shoot at 1/8 sec
- with f1.2 lens, at ISO 400 (a common negative), shoot at 1/15 sec
- with f1.4 lens, at ISO 800, you are around 1/30
- f2.8, ISO 3200, 1/30 sec
—————10pm—————————————————
EV 4 : close street light, close candle, small room light, indoor nature light
- with f1.2 lens, at ISO 200 (a common negative), shoot at 1/15 sec
- with f1.2 lens, at ISO 400 (a common negative), shoot at 1/30 sec
- with f1.4 lens, at ISO 800 (a common negative), shoot at 1/50 sec
EV 5 (lighten) (dim shopping mall, public indoor light array condition, mrt)
- with f1.2 lens, at ISO 200 (a common negative), shoot at 1/30 sec
- with f1.2 lens, at ISO 400 (a common negative), shoot at 1/60 sec
EV 6 (well lighten): bright shopping mall, bright public indoor light array condition, bright mrt
- with f1.2 lens, at ISO 200 (a common negative), shoot at 1/60 sec
- with f1.2 lens, at ISO 400 (a common negative), shoot at 1/120 sec
- with f1.4 lens, at ISO 800, 1/250 sec
—————7pm—————————————————
EV 7 (over lighten): stadium lights, stage show, inside MRT train
- with f1.2 lens, at ISO 200 (a common negative), shoot at 1/120 sec
- with f1.2 lens, at ISO 400 (a common negative), shoot at 1/250 sec
- with f1.4 lens, at ISO 400 (a common negative), shoot at 1/250 sec
- with f1.4 lens, at ISO 800, 1/500 sec,
- at f2.8, at ISO 800, 1/125
- at f3.5, at ISO 800, 1/100
EV 8 (over lighten): fashion street, stadium lights, stage show
- at f2.8, at ISO 200 (a common negative), shoot at 1/60 sec
- at f2.8, at ISO 400 (a common negative), shoot at 1/125 sec
EV 9 (spotlight):
- at f2.8, at ISO 200 (a common negative), shoot at 1/125 sec
- at f2.8, at ISO 400 (a common negative), shoot at 1/250 sec
—————6pm————————————————
EV 10 : after sunset
- at f4, at ISO 200 (a common negative), shoot at 1/125 sec
- at f4, at ISO 400 (a common negative), shoot at 1/250 sec
EV 11 (Lovely 11, last of f1.4): Sunset soft warm light, deep shadow
- at f4, at ISO 200 (a common negative), shoot at 1/250 sec
- at f4, at ISO 400 (a common negative), shoot at 1/500 sec
- at f2.8, at ISO 800, shoot at 1/2000 sec
—————-start of f4, end of f1.4——————-
EV 12 (Sunny Day): (half moon), open shade
- at f2.8, at ISO 400, shoot at 1/2000 sec
- at f4, at ISO 200 (a common negative), shoot at 1/500 sec
- at f4, at ISO 400 (a common negative), shoot at 1/1000 sec
EV 13 (Cloudy sun): no shadow cloudy sun
- at f4, at ISO 200 (a common negative), shoot at 1/1000 sec
- at f4, at ISO 400 (a common negative), shoot at 1/2000 sec
- at f8, at ISO 200 (a common negative), shoot at 1/250 sec
- at f8, at ISO 400 (a common negative), shoot at 1/500 sec
EV 14 (Hazy Sun): Moonlight, hazy and week sun
- at f4, at ISO 200 (a common negative), shoot at 1/2000 sec
- at f4, at ISO 400 (a common negative), shoot at 1/4000 sec
- at f8, at ISO 200 (a common negative), shoot at 1/500 sec
- at f8, at ISO 400 (a common negative), shoot at 1/1000 sec
—————1pm————————————————
EV 15 : Sunny 16 rules, hot sun
- at f16, at ISO 200 (a common negative), shoot at 1/250 sec
- at f16, at ISO 400 (a common negative), shoot at 1/500 sec
- at f4 (4 stops), at ISO 200 (a common negative), shoot at 1/4000 sec
- at f4 (4 stops), at ISO 400 (a common negative), shoot at 1/8000 sec
EV 16 : Hot sun + Reflective ground
- half of Sunny 16 rules