Want to try something more creative with your images. Create images with a beautiful blur effect by free-lensing.
1). Set the lens to manual focus and set apeture to lowest setting. Meter and adjust shutter speed or ISO accordingly for correct exposure all the while considering that more light will be entering with the lens detached.
2). Detach lens but keep it close to the camera body. Tilt the lens up and down or left and right to see how the plane of focus changes. The farther the lens is from the camera the less will be in focus, which is something you can experiment with as you become more comfortable.
3). Best focal length to start with is 50mm. The lighter the lens the better since you will be holding the camera with one hand (unless using a tripod) and the lens with the other while trying to focus manually.
4). Use live view on a DSLR or the LCD on a mirrorless camera to help achieve focus where you want it.
5). You will be exposing the inside of the camera body as well as your lens to the elements so be careful of things such as dust or moisture. You may need to carefully clean your gear afterward.
Have fun experimenting!