So this week it back to experimenting with the Holga. I wanted to see how different coloured filters affect a Black & White photograph.
I had always kind of understood the changes in contrast but what I had never really looked at was how filters render different colours in B&W.
Thus I took 4 pictures of the same object but each with a different coloured filter. These were all taken at the same time of day (lunchtime) and it was quite grey and overcast so a bit disappointed that it does not show effects on Blue sky.
So see the pictures below, the colour written on the picture is the colour filter used. The police box is a pale, pastel blue. The telephone box is a deep red and of course the trees were a bright but deep green.
Whilst not a huge difference in the contrasts in the pictures it is interesting (at least to me!) how the contrast and B&W tones have subtly changed, including the sky. The film used is Kodak Tri-X 400 and the pics are posted as scanned. I hope you find this useful
Updated: here are iPhone pics of the original scene if it helps