100 ASA Tungsten / 64 ASA Daylight

OptiKen · Oct 21, 2016

I'm shooting some Kodak cinema film in my Canon P right now and the can says, 100 ASA Tungsten / 64 ASA Daylight. I'm using an 85A correction filter but am unsure of the speed rating. I interpret that to mean that you would set your camera at 100 under lights and set it for 64 if you are shooting in daylight. Is that correct? If so, can you change settings in the same roll but develop it all the same as any other C-41 film?

Thanks in advance

Ken

MattKing · Oct 21, 2016

It isn't a C-41 film.

Which film is it?

OptiKen · Oct 21, 2016

I don't remember Kodak's number for it but it is C-41

MattKing · Oct 21, 2016

Kodak never made a C-41 movie film. If it is a negative film, it is probably EC-N process.
If it yields a positive transparency, it is probably E6 process.

MattKing · Oct 21, 2016

OptiKen said:
I 'think' it is Vision 2 - 100T

That is EC-N process. It is designed to yield a lower contrast negative, balanced for contact printing on to an EC-P processed print stock (or scanned using the motion picture scanning technology).
I'll let the cinephiles here comment on whether the 85A is the right correction filter.

OptiKen · Oct 21, 2016

Sorry.
It's EXR 100T #5248

Ian Grant · Oct 21, 2016

You ned to be more specific aboutb the actual film.

Most B&BW films used to give a Daylight speed and a separate Tungsten speed, this was usually on the data sheet. ADOX and later EFKE used the Tingsten speed in the film name so Adox 14 (later EFKE 14) used the DIN Tungsten speed in the name, later it was renamed EFKE 25 using the ASA (later ISO) Tungsten speed, in fact the dDaylight speed was 40-50 ISO.

Moden colour negative films were made to be used with both Tungsten & Daylight without filtrationcolour temperatures being adjusted in printing, so it's odd to have a filme with a lower daylight speed to its Tungsten speed - unless filtration is mentioned.

Ian

OptiKen · Oct 21, 2016

Of course you are right...it is supposed to be developed in ECN-2, but I use C-41 when I process it

MattKing · Oct 21, 2016

OptiKen said:
Sorry.
It's EXR 100T #5248

In which case, here is the Kodak data sheet with filtration and metering information: http://motion.kodak.com/KodakGCG/uploadedfiles/motion/H-1-5248t.pdf

EDIT: this of course is based on processing using EC-N rather than C-41 chemicals.

Bill Burk · Oct 21, 2016

To OptiKen's original question: Where the Exposure Index is given in that Kodak data sheet linked by MattKing...

It sure looks to me as if that Exposure Index includes the filter factor. So it is simple if you are using a hand-held meter... but more complicated if you are metering through the lens in the camera (because you have to figure out what to do...)

MattKing · Oct 21, 2016

Bill Burk said:
To OptiKen's original question: Where the Exposure Index is given in that Kodak data sheet linked by MattKing...

It sure looks to me as if that Exposure Index includes the filter factor. So it is simple if you are using a hand-held meter... but more complicated if you are metering through the lens in the camera (because you have to figure out what to do...)

Bill is perceptive.

The data sheet includes: "Use these indexes with incident- or reflected-light exposure meters and cameras marked for ISO or ASA speeds or exposure indexes".

From the reference to incident meters, I infer that the filter factor is built in.

100 ASA Tungsten / 64 ASA Daylight

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