Here’s how your 4,000 x 2,250 pixel golf course photo relates to standard print sizes when you want to get it printed:
4x6 inch (10x15cm): Your image is far larger than needed so they will print at this size with excellent quality.
5x7 inch (13x18cm): Still much larger than needed, perfect sharpness at this size.
11x14 inch (28x36cm): Slight upscaling may occur, but results are generally good for wall display—some minor decrease in sharpness if viewed extremely close up.
12x18 inch (30x45cm): A bit less than the optimal but for wall art or display viewed from a distance, your photo will still look very good.
16x20 inch (40x51cm) and larger: Quality becomes noticeably softer, suitable only if the viewer stands a few feet away, as with posters.