Ektachrome 64T: should we use 85B filter?

[tiagoncalves]

So, here is the question: Is it really important to use a 85B filter with Ektachrome 64T?
If we use the external filter, we must leave the outdoors/indoors switch in the indoors, right? That way there will be no internal filter, and the camera light meter will give us the exposition value, considering the loss of the light in the filter?

[reflex]

So, here is the question: Is it really important to use a 85B filter with Ektachrome 64T?

Probably not for casual shooting. You should be able to get away with using your camera's built-in 85 filter. The difference in colour temperature is only a couple of hundred Kelvin.

If we use the external filter, we must leave the outdoors/indoors switch in the indoors, right? That way there will be no internal filter...

Correct, unless you like orange-tinted movies.

[Alex]

Do those internal filters fade away over time?

I wonder if an external 85B filter actually is a more significant bump in color temperature when compared to an internal 25 year old 85 filter.

[Ugo]

The natural light doesn't have a costant color temperature. That is between 3200°K at sunset and over 6000°K with cloudy sky. The value for a white light is 5600°K.
The K40 is balanced for 3400°K. The 85 "gets away" 1200°K from the light. It means if the natural light is at 5600°K to the film 3400°K arrive.
The 64T is balanced for 3200. If you use the 85 instead the 85B, a light with 200°K over the right value for the emulsion arrive to the film. It means the white will be going a bit (but a little bit) to the blue.
Anyway this "treason" of the real colors isn't too much important because we know the natural light isn't often at 5600°K.

[Patrick]

An 85B filter is recommended for use with Ektachrome 7240 in order to get accurate colours. However, I used an 85 filter when shooting a roll of 16mm 7240 and the colours turned out quite natural looking to me.

[Nigel]

I never liked the VNF unless I was using an 85B. I have some of the 64T and will do some tests but my guess is that the 85B will look better. If you are going to Xfer it wouldn't matter much because you can tweak then.

Good Luck

[tiagoncalves]

Thanks for the information!
I think I'll try to buy a 85b filter for my camera. It can be just better, so, why not? But the main reason is that, in my last camera reparation, the technician made a deep scratch in the built in filter. Ups... after that I didn't shot another film, so, maybe it doesn't even matter.

Tiago

[gianni1]

Just saw a Vampire movie. Using Tungsten film in daylight, without filter, gave it the night time effect. It also works for full moon and werewolf type movies... and looks cool if you mix tungsten lights into the scene.

Not with super 8, but here is a (forgive me) H. Potter illustration with that effect:





Gianni