The video is about one to one training with Mike Brown about the maximum dept of focus using a camera.
The use of camera to focus the boat and the hook to which it has been fastened using a rope.
Brown teaches how to use the F22 lens which is easily available in the market.
Once the view is in focus how a lens can capture the picture within 2mts of the distance in a precisely big way is interesting to watch.
The men lie down completely and take a good picture covering the boat which is fastened to the hook
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