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The Sighter mounts in the camera hotshoe and greatly helps finding and centering birds, aircraft, or other objects when using a long zoom. A great help for birds in flight photography and birding.
If you've ever lost track of the bird, aircraft, surfacing whale, or anything else while trying to follow it with the zoom at maximum length, this sighter will help eliminate that problem and keep the bird in the frame! It has certainly helped my shots, and will again this fall at the air show and bird migration festival.
It's much better to have this with me already, than to wish I had something like it when shooting :)
When you sight through a long zoom, if you lose the target then by the time you zoom wider and find it again - it's too late. With a whale you need to watch the open water around the actual field of view to catch where it appears next.
== The Tracker ==
This sighter / tracker slips into the hotshoe and allows you to follow the target through the inner sighting rings while still providing nearly full view of the scene. You can more easily follow the bird or animal, see where it is going, and even keep the scene level with the horizon cue tips in the outer ring.
== Design features ==
The tracker has a spring-loaded friction fit into the standard hotshoe on any camera. There are two smaller tether rings on either side where a thin cord should be added to attach it to the camera or loop around the lens to avoid losing the tracker.
The outer ring has two horizon stubs, which aid keeping the camera level with any horizon that is also in view.
== Safety feature ==
The tracker even has a special feature to protect your camera. 3D printed accessories can be quite strong and a long device plugged into the hotshoe may break or damage the hotshoe itself if the far end is bumped hard (acting as a lever). I designed safety breaks into the front ring to prevent this risk. If the top of the large front ring is bumped the front ring will bend down without applying excessive force to the hotshoe. The inner sighting rings are on a separate part and will remain in alignment.
== Using the Tracker ==
Follow your target, while keeping the inner rings centered on each other and the target in the middle of the end sighting ring.
After a bit of practice you'll be able to subconciously keep the rings centered while observing the target, and be aware of what else is in the scene (where it might be going, what else is happening).
The sighting rings will be out of focus to your eye since they are so close to you. The rings are sized so one is just larger than the other and it will be clear enough when they are in line with each other.
The focus mode of your camera should be set to focus in the center plus zones around the center. Don't use just a focus mode exactly in the center.