Create a Fisheye Lens Effect Using Photoshop
A fisheye lens is easily one of the best ways to get creative and have a blast with photography. It is an effect that is a wide-angle lens with a field of vision covering up to 180°, the scale being reduced toward the edges in photography, but in Photoshop, you can easily give effects with some effective tools and techniques.
Insert an image, Go to File > Open > Select an image > OK
Go to Filter > Distort > Spherize, Increase the amount of spherize to 100% and mode to normal, Turn the value of picture up to 33%, so you can the difference of upcoming effect on your picture after hitting OK button.
Press ok after you are satisfied.