Developing 100D

[mr_x]

Hi,

How many 100ft / 33m rolls of 16mm 100D could I process in 1 litre of Tetenal E6 chemistry please?

Thanks,

Ric

[richard p. t.]

According to the tetenal instructions, 1 litre of their E6 is capable of 12 x 36 exposure films. This is effectively 5 rolls of super 8. The surface area of a 100' roll of 16mm is equivalent to 4 x super 8 50' rolls. So technically, Tetenal would say, just one roll of 100' 16mm can be processed in their litre kit. In practice, you can certainly process a second and it would be hard to tell them apart.
However, what sort of tank would allow you to process 100' of 16mm in just 1 litre of solution?
For a 50' lomo tank, you need close to two litres to cover 2 x 50' of 16mm.
For a 100' lomo, you need 1.66 litres to cover 1 x 100'.
I wouldn't advise processing colour in a rewind tank like the morse because of the issue with temperature. But you could try.
I don't know what volume of chemistry a morse needs, but presumably it is less.
Buy a 5 litre kit. Then you can process at least 8 rolls (technically, only 6, but 8 is fine).
richard

[mr_x]

According to the tetenal instructions, 1 litre of their E6 is capable of 12 x 36 exposure films. This is effectively 5 rolls of super 8. The surface area of a 100' roll of 16mm is equivalent to 4 x super 8 50' rolls. So technically, Tetenal would say, just one roll of 100' 16mm can be processed in their litre kit. In practice, you can certainly process a second and it would be hard to tell them apart...For a 50' lomo tank, you need close to two litres to cover 2 x 50' of 16mm.
For a 100' lomo, you need 1.66 litres to cover 1 x 100'...

Thanks Richard,

Now let's see. For 100 feet of 16mm I'd split the film into 2x50ft lengths, then I'd place each spiral-loaded length in a separate Lomo. 1 litre of liquid just covers an empty Lomo set for 16mm so 100 feet of film is going to displace more liquid, increasing the covering depth of the liquid.

I know you can reuse the Tetenal but you have to increase the developing time slightly each time in order to make up for the drain on the chemistry after each successive processing. I'd be happy to process 100 feet this way but a second 100 feet might be tricky, because by the time this has been processed the chemistry would have been used 4 times over. In theory this should still be all right as long as you increase the times for each processing but ... I don't know. What do you think please re. multiple E6 processing in a briefly maintained 'stock' collection of E6 chemistry?

Ric

[richard p. t.]

Yes, fine, 50' at a time in a 50' lomo. cut the film with a splicer in the dark and splice a little bit of leader (in the dark) onto the tail of the film. Splice on the base side only. Then, when you scrunch this bit of film in the centre of the spiral, you won't be losing any of your images. With both halves of the roll done this way, you can splice them back together without losing a frame. Works well. You should only have to splice leader onto one of the two rolls.
I think you will still be able to process the 4 x 50' in the 1 litre of chemistry. Use the following times for the four uses of the First dev, Second dev and Blix:

1: 615, 6, 6
2: 620, 620, 620
3: 630, 7, 7
4: 6.45, 8, 8

These will be close enough for Jazz!

[mr_x]

...I think you will still be able to process the 4 x 50' in the 1 litre of chemistry. Use the following times for the four uses of the First dev, Second dev and Blix:

1: 615, 6, 6
2: 620, 620, 620
3: 630, 7, 7
4: 6.45, 8, 8

These will be close enough for Jazz!

Looking good. Two times 100' should do me proud! Do you mean this though, please?

1: 6.15, 6, 6
2: 6.20, 6.20, 6.20
3: 6.30, 7, 7
4: 6.45, 8, 8

Thanks again,

Ric

[richard p. t.]

yes, 4 x 50' of 16mm, so 2 x 100' of 16mm.
exactly.
go for it

[mr_x]

yes, 4 x 50' of 16mm, so 2 x 100' of 16mm.
exactly.
go for it

Brilliant! Can't wait! But first a few more trial runs with the camera

Ric