Nice arrangement! I like the graduation of the colors. More technical and precise people would have had all of the pencil labels lined up or not shown at all. I am guessing a wider aperture was used... f3.5, f4?? I may be wrong but it looks like the focal point is not quite on the circle.
Had to revisit this one to see what caused the blur. I now see it is not the f stop but it was the shutter speed. 1/25 hand held probably. Very slow shutter to use handheld. I have heard that the rule of thumb for handholding a shot is 1/focal length. So for a 50mm lens your longest shutter speed hand held should be about 1/50. Keep on shooting!
Nice arrangement! I like the graduation of the colors. More technical and precise people would have had all of the pencil labels lined up or not shown at all. I am guessing a wider aperture was used... f3.5, f4?? I may be wrong but it looks like the focal point is not quite on the circle.