Comparative images for a range of Front-of-lens IR filters
Clive R. Haynes FRPS
Above: 680nm Filter. RAW File
Above: 680nm Filter.
With Adjustment Layers for 'Levels' > Auto + 'Channel Swap'
With Adjustment Layers for 'Levels' > Auto + 'Channel Swap'
Above: 680nm Filter.
With Adjustment Layers for 'Levels' > Auto + 'Channel Swap' + 'Black & White'
With Adjustment Layers for 'Levels' > Auto + 'Channel Swap' + 'Black & White'
Comments:
As expected, the test revealed a very red looking RAW file and after applying 'Levels' > 'Auto' and 'Channel-Swapping, an interesting cool blue and mild magenta range of colours resulted.
The black & white result is useful and presents an acceptable tonal range which could be managed for personal expression.