Incident Key Light/T-stop exposure guide
Find T-stop from footcandles or footcandles for T-stop at 24fps | 
    ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
         
  | 
        EI/ASA:  | 
        1600  | 
        1250  | 
        1000  | 
        800  | 
        650  | 
        500  | 
        400  | 
        320  | 
        250  | 
        200  | 
        160  | 
        125  | 
        100  | 
        
    ||||||
T-Stop:  | 
        Footcandles  | 
    |||||||||||||||||||
1.4  | 
        
         
  | 
        1.5  | 
        2.0  | 
        2.5  | 
        3.0  | 
        4.0  | 
        5.0  | 
        6.0  | 
        8.0  | 
        10  | 
        12  | 
        16  | 
        20  | 
        25  | 
       
    ||||||
1.6  | 
        
         
  | 
        2.0  | 
        2.5  | 
        3.0  | 
        4.0  | 
        5.0  | 
        6.0  | 
        8.0  | 
        10  | 
        12  | 
        16  | 
        20  | 
        25  | 
        32  | 
        
        
        
        
        
        
    ||||||
1.8  | 
        
         
  | 
        2.5  | 
        3.0  | 
        4.0  | 
        5.0  | 
        6.0  | 
        8.0  | 
        10  | 
        12  | 
        16  | 
        20  | 
        25  | 
        32  | 
        40  | 
        
        
        
        
        
        
    ||||||
2.0  | 
        
         
  | 
        3.0  | 
        4.0  | 
        5.0  | 
        6.0  | 
        8.0  | 
        10  | 
        12  | 
        16  | 
        20  | 
        25  | 
        32  | 
        40  | 
        50  | 
        
        
        
        
        
        
    ||||||
2.2  | 
        
         
  | 
        4.0  | 
        5.0  | 
        6.0  | 
        8.0  | 
        10  | 
        12  | 
        16  | 
        20  | 
        25  | 
        32  | 
        40  | 
        50  | 
        64  | 
        
        
        
        
        
        
    ||||||
2.5  | 
        
         
  | 
        5.0  | 
        6.0  | 
        8.0  | 
        10  | 
        12  | 
        16  | 
        20  | 
        25  | 
        32  | 
        40  | 
        50  | 
        64  | 
        80  | 
        
        
        
        
        
        
    ||||||
2.8  | 
        
         
  | 
        6.0  | 
        8.0  | 
        10  | 
        12  | 
        16  | 
        20  | 
        25  | 
        32  | 
        40  | 
        50  | 
        64  | 
        80  | 
        100  | 
        
        
        
        
        
        
    ||||||
3.2  | 
        
         
  | 
        8.0  | 
        10  | 
        12  | 
        16  | 
        20  | 
        25  | 
        32  | 
        40  | 
        50  | 
        64  | 
        80  | 
        100  | 
        125  | 
        
        
        
        
        
        
    ||||||
3.6  | 
        
         
  | 
        10  | 
        12  | 
        16  | 
        20  | 
        25  | 
        32  | 
        40  | 
        50  | 
        64  | 
        80  | 
        100  | 
        125  | 
        160  | 
        
        
        
        
        
        
    ||||||
4.0  | 
        
         
  | 
        12  | 
        16  | 
        20  | 
        25  | 
        32  | 
        40  | 
        50  | 
        64  | 
        80  | 
        100  | 
        125  | 
        160  | 
        200  | 
        
        
        
        
        
        
    ||||||
4.5  | 
        
         
  | 
        16  | 
        20  | 
        25  | 
        32  | 
        40  | 
        50  | 
        64  | 
        80  | 
        100  | 
        125  | 
        160  | 
        200  | 
        250  | 
        
        
        
        
        
        
    ||||||
5.0  | 
        
         
  | 
        20  | 
        25  | 
        32  | 
        40  | 
        50  | 
        64  | 
        80  | 
        100  | 
        125  | 
        160  | 
        200  | 
        250  | 
        320  | 
        
        
        
        
        
        
    ||||||
5.6  | 
        
         
  | 
        25  | 
        32  | 
        40  | 
        50  | 
        64  | 
        80  | 
        100  | 
        125  | 
        160  | 
        200  | 
        250  | 
        320  | 
        400  | 
        
        
        
        
        
        
    ||||||
6.3  | 
        
         
  | 
        32  | 
        40  | 
        50  | 
        64  | 
        80  | 
        100  | 
        125  | 
        160  | 
        200  | 
        250  | 
        320  | 
        400  | 
        500  | 
        
        
        
        
        
        
    ||||||
7.1  | 
        
         
  | 
        40  | 
        50  | 
        64  | 
        80  | 
        100  | 
        125  | 
        160  | 
        200  | 
        250  | 
        320  | 
        400  | 
        500  | 
        650  | 
        
        
        
        
        
        
    ||||||
8.0  | 
        
         
  | 
        50  | 
        64  | 
        80  | 
        100  | 
        125  | 
        160  | 
        200  | 
        250  | 
        320  | 
        400  | 
        500  | 
        650  | 
        800  | 
        
        
        
        
        
        
    ||||||
9.0  | 
        
         
  | 
        64  | 
        80  | 
        100  | 
        125  | 
        160  | 
        200  | 
        250  | 
        320  | 
        400  | 
        500  | 
        650  | 
        800  | 
        1000  | 
        
        
        
        
        
        
    ||||||
10.0  | 
        
         
  | 
        80  | 
        100  | 
        125  | 
        160  | 
        200  | 
        250  | 
        320  | 
        400  | 
        500  | 
        650  | 
        800  | 
        1000  | 
        1290  | 
        
        
        
        
        
        
    ||||||
11.3  | 
        
         
  | 
        100  | 
        125  | 
        160  | 
        200  | 
        250  | 
        320  | 
        400  | 
        500  | 
        650  | 
        800  | 
        1000  | 
        1290  | 
        1625  | 
        
        
        
        
        
        
    ||||||
12.7  | 
        
         
  | 
        125  | 
        160  | 
        200  | 
        250  | 
        320  | 
        400  | 
        500  | 
        650  | 
        800  | 
        1000  | 
        1290  | 
        1625  | 
        2050  | 
        
        
        
        
        
        
    ||||||
14.2  | 
        
         
  | 
        160  | 
        200  | 
        250  | 
        320  | 
        400  | 
        500  | 
        650  | 
        800  | 
        1000  | 
        1290  | 
        1625  | 
        2050  | 
        2580  | 
        
        
        
        
        
    ||||||
16.0  | 
        
         
  | 
        200  | 
        250  | 
        320  | 
        400  | 
        500  | 
        650  | 
        800  | 
        1000  | 
        1290  | 
        1625  | 
        2050  | 
        2580  | 
        3250  | 
        
        
        
    ||||||
18.0  | 
        
         
  | 
        250  | 
        320  | 
        400  | 
        500  | 
        650  | 
        800  | 
        1000  | 
        1290  | 
        1625  | 
        2050  | 
        2580  | 
        3250  | 
        4100  | 
        
        
        
    ||||||
20.0  | 
        
         
  | 
        320  | 
        400  | 
        500  | 
        650  | 
        800  | 
        1000  | 
        1290  | 
        1625  | 
        2050  | 
        2580  | 
        3250  | 
        4100  | 
        5160  | 
        
        
    ||||||
22.6  | 
        
         
  | 
        400  | 
        500  | 
        650  | 
        800  | 
        1000  | 
        1290  | 
        1625  | 
        2050  | 
        2580  | 
        3250  | 
        4100  | 
        5160  | 
        6500  | 
        
    ||||||
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