Differences

This shows you the differences between two versions of the page.

@@ Line 1: / Line 1: @@
+====== 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
+  * (1st shot I shot at ISO 1600 with f1.7 lens, 2nd shot at ISO1600 with f1.4) \\ {{photowiki:photo_case_fast_lens.jpg?500|}} {{photowiki:lightexp_ev05_public_light_outdoor_02.jpg?500|}}
+**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
+  * f2.8, ISO 3200, 1/60 sec \\ {{photowiki:lightexp_ev07_public_light_outdoor.jpg?250|}}
+**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
+  * with f1.4 lens, at ISO 800, 1/125 sec (125~250) \\ {{photowiki:lightexp_ev09_public_light_indoor.jpg?500|}}
+** 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
+  * at f1.4, at ISO 400, shoot at 1/4000 sec \\ (this shot at f1.4 at my kx top speed of 1/6000 at ISO 400)  \\ {{photowiki:half_frame_50mm_f1.4_imgp3010.jpg?500|}}
+----------------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