Comments:
As expected, the result is very similar an almost indistinguishable from the 720nm filter.

Once again the test revealed a very red looking RAW file with good contrast.

After applying 'Levels' > 'Auto' and 'Channel-Swapping, some interesting cool slightly cyan-blue and delicate magenta colours were revealed.

The black & white result is useful with a little more contrast than the 680nm filter. It presents a good tonal range for personal expression.