Unblinking Eye
Filter Factors

 

Filter Designation

Filter Color

Daylight

Tiffen*

Leitz

Kodak/Wratten

 

Factor

Stops

Y1

Y0

6

K-1

Light Yellow

1.5X

2/3

Y2

Y1

8

K-2

Medium Yellow

2X

1

Y3

Y2

9

 

Deep Yellow

2X

1

G1

YG

11

X1

Light Green or Yellow-Green

4X

2

12

 

12

Minus Blue

Dark Yellow

2X

1

G2

 

13

X2

Medium Green

6X

2-2/3

Or

O

15

G

Deep Yellow or Orange

2.5X

1-1/3

23A

 

23A

 

Light Red

6X

2-2/3

R1

Red

25

A

Red

8X

3

47

 

47

C5

Blue

6X

2-2/3

   *  Tiffen eventually adopted the Kodak/Wratten numeric designations.

 

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