This is the first of three posts being posted over the next hour and simply records the four sets of negatives and the camera settings employed and are being shared in order to give the reader a full understanding of what my process was. The second of today’s posts talks about my experiences with the computer processing side of things and the third contains my full workflow as of today.
I used a single roll of Fomapan 400, exposed at box speed and a tripod-mounted Bronica SQ-A. I metered with a Polaris handheld meter. The three filters, red/green/blue, were from a set of budget filters. For each of the four compositions I exposed the negatives in the sequence Red, Green, Blue or RGB as I felt that a consistent workflow would lead to less confusion. The roll was “scanned” using a Fujifilm X-T3 digital camera and a Nikkor 60mm micro lens with an appropriate adapter.
I kept the aperture consistent within each set and varied the shutter speed to adjust for the different filter factors. Whilst testing beforehand suggested the green was around +2 or +2.5 I think that in future I will simply use a factor of +3 for each filter as my starting point. With a base exposure of 1/60th sec I was using shutter speeds of 1/8th or 1/15th as appropriate. A cable release completed the set-up.
The film was developed for thirteen minutes in Ilford ID11(1+1) at twenty degrees using my normal process so everything was kept as normal as possible to reduce the chances of processing variation.