The AE finder FN allows for aperture priority on the New F-1 which is my preferred way of shooting film. I also own the Speed Finder and the Waist Level finder 6X, both of which I have used for macro work. Attaching a winder or motor drive allows for shutter priority too. This is the best all-around finder for the New F-1 since it also permits manual override. Very bright and shows appropriate information of aperture and shutter speed, shifting the aperture read out to the bottom of the screen while the shutter speeds remain on the right. Includes a hot shutter and shutter eyepiece built in.