Depth

This cute little product here that looks like an injection is a USB hard drive designed by dialog05. This image here is the actual product and the picture is used in their website to showcase their work. This displays depth through it's positioning with regards to the relative height. Although placed in a diagonal position, half of the injection (the front)is below the horizon and appears very clear, big and close to us. The other half (the end) is above the horizon, appears like it's receding in size, getting blurrier and far from us so we think that the end of it is at the back.
The other elements that work with depth in this picture is the direction. It is easily identifiable which tip of the injection is closer to us and which tip is farther to us and this is supported by DIRECTION. You can tell it is pointing to the bottom right because that point on the bottom right (tip of the injection/USB) is the sharpest, clearest part of the image. It helps depth by indicating that it is coming from an angle and you can find the "front" and "back". Another element that helps is the TEXTURE, which in this case would be the surface of the injections such as the measurement lines and the numbers on the body of the object. As it gets "further" away from us (above the horizontal line), there seems to be a gradient of sharp to blur from bottom to top. The pattern becomes vaguer as it extends away from the viewer.