Cameras used in Bad Girl

Mizuka is running an Olympus OM-3 M4/3 and a M.Zuiko 45mm f/1.8 lens, Yuu uses a full-frame Canon EOS R6 with the RF 24-105mm f/4 lens. The difference in lenses speaks to Yuu and Mizuka's contrasting objectives: since Mizuka is shooting on a crop sensor, the 45mm would correspond with a 90mm on a full frame, an excellent portrait focal length. The fixed focal length means she needs to position herself well for a good shot, which is generally a non-issue if Mizuka's familiar with her home and its spacing. Yuu's flexible focal length allows her to capture Atori from different ranges, but a slower aperture means tradeoffs, and the fact that Yuu doesn't mind this reflects how to her, any photo of Atori is a good photo.