Portsmouth Long Exposure #2

I remember seeing something of Ilford revising their numbers, but didn't pay close attention. Here, it looks like you had figures that extended beyond their prev. info & it looks good. Composition, exposure - both good. Keep experimenting - they're a treat to see.

Thanks. I did not have the correct thread for this very old camera so I could not use my tripod. I had to balance the camera on a wall so I could not get the composition that I really wanted. Portsmouth is a busy port so passing ships are inevitable but what I was after was the boiling cauldron of water illuminated by moonlight. The tides are very large in Portsmouth and this was one day before full moon.

The info is here:

https://www.ilfordphoto.com/wp/wp-content/uploads/2017/06/Reciprocity-Failure-Compensation.pdf

Svenedin, Thank You! The factor approach is much more useful than their prior graph. I usually populate a spreadsheet w/ values through about 15 min (indicated) and keep a print in the bag so I don't have to carry a calculator.

Yes this uses a power factor to calculate the corrected from the measured exposure. If you have an iPhone, access the calculator app. Turn the iPhone in landscape orientation and a scientific calculator is revealed.