Recently I have started using Rollei Retro 80s film with an IR 72 filter again, for an infrared look. On a bright sunny day at midday I rate the combo at EI 2, typically shooting a 1/2 second exposure at f/16. Even though this is not a true infrared film stock, I do like the look I get.
I took both images with my Rolleiflex 3.5E3 twinlens reflex. TLR’s and rangefinders are great for infrared work, compared to SLR’s as the IR 72 filter is almost completely opaque to visible light.