My second technique for getting a shallow depth of field required a F1.8 aperture. The only F1.8 lens I have is an Olympus 50mm from my film days so I attached it to my Fuji with an adaptor. I am very impressed with the results. The lens is more contrasty than I remember and produced some clean sharp images with the required narrow depth of field. Taken in the Botanic Gardens in Cambridge.