Ektachrome dupe film ISO?

[EASmithV]

I got a box of 4x5 Ektachrome Duplicating Film 6121 and I want to shoot it in my 4x5. Does anyone know the speed of this film? I want to try shooting this film in daylight, if that matters.

 

[AgX]

The data sheet states that the EI would be between 4 and 40.

The film is designed for tungsten lighting, so you'll have to take into account the filtration.

 

[EASmithV]

4 and 40? How can it be that different?

 

[Photo Engineer]

Differences in tungsten illumination and filtration??

PE

 

[EASmithV]

Oh... But in daylight, what do you think it would be (assuming that there were no color correction filters)?

About 8?

 

[Photo Engineer]

You have to use a color correction filter (yellow orange - I forget the numeric value) to correct daylight to tungsten. You would use that filter's filter factor and adjust about 1/2 way between for a start.

PE

 

[Konical]

Good Evening, EA,

Your PM received; response sent a few minutes ago. Feel free to contact again if necessary.

Konical