a camera and one lens. if you can ditch the bag, too, and just carry your camera in a black plastic bag, that would be best. don’t make a scene and use a camera that is easy to dial in- the camera you are most comfortable using.
don’t worry about technology; you don’t need the newest camera. amazing work is created by people using anything from phones to old film cameras. the photo and the subject matter in the photo, at the end of the day, are all that matter.
i like to keep it light and pick a certain time of the day to take photos, and stick to it, or 