Five things to look for, down-the-line.

This is the same five-item list from down the line. The order is unchanged: a stable and fluid spine, a power turn, lag, a compression line, and a straight-line release. These two guides were written against that frame on October 14, 2026. If the priority list changes, read the page again.

Each item is a visual check. Nothing here is an automatic score or a professional-norm comparison. Posture Check draws a spine line from this camera, which makes the spine item easier to see than it is face-on. Shaft lean and lag are harder from here, and the face-on guide is the better view for them. A phone video still cannot measure pressure, exact face angle, or the ball's flight.

Film a mid-iron from down the line, camera near hand height, club in frame. Read one item.

Stable and fluid spine. At Address, look at the bend toward the ball and the room under the arms. Good is a distance you can hold the club from without reaching, and a back shape you can move from. The miss is a cramped reach, an exaggerated arch, or the hips moving toward the ball by impact so the spine stands up. Visual check. Posture Check can draw the line. Read Address posture and Early extension.

Power turn. Down the line, you mostly see the plane the arms and shaft travel on, not how many degrees the chest turned. At Takeaway and the Top, good is a route with room above the trail side that the club can return from. The miss is a shaft laid flat behind you, or a trail elbow that has flown so the club is off the route. Visual check. The size of the turn is clearer face-on. Read Flat backswing and Flying elbow.

Lag. This camera shows the shaft's slope into the ball better than the angle between shaft and lead forearm. From the Top into the Downswing, look for a club that shallows onto a route to the ball instead of being thrown steeply from the top. The forearm angle itself is a face-on look. If you only have this camera, do not pretend you measured lag. Visual check, and an incomplete one. Read Early loss of lag, and Over the top for the steep route.

Compression line. Down the line, compression shows up as the low point: whether the club reaches the ground at the ball or behind it, and whether the body has stood up or moved in. Handle-forward is clearer face-on. Good from here is a strike that starts the brush with the ball, from a posture you still recognize. The miss is the club hitting the ground early while the hips have moved closer to the ball. Visual check. Read Early extension and No shaft lean.

Straight-line release. This is the path item from this camera. From the Top through impact, good is a club that approaches from inside the line enough to reach the ball without a detour. The miss is an over-the-top move outward, or a club stuck behind the body so the hands have to flip. Visual check. The face angle is still a poor guess from either camera. Read Over the top and Stuck inside.

Film five full mid-iron swings from down the line. Hands high enough to see the shaft, far enough back to keep the club in frame, on the hand-line rather than above your head. Pick one of the five items.

Step through the slots named for that item. Write what you see and what the strike did. If they do not belong together, stop. If they do, open the matching guide. Do not grade lag or shaft lean from this camera when you also have a face-on take of the same swings. Use the camera that can see the thing.

Compare two of your own frames. This page does not ship a model before-and-after. A frame of someone else, paused on a highlight, is not your pair.

Replay once. If the item was spine, plane, or path, this camera was the right one. If the item was lag or the handle's lean, open the face-on guide before you decide. Change one thing, film again another day, and compare the same camera to itself.