Capture Process

When capturing images at close range with a wide angle lens, depth of field may be limited and focal distance may be critical for recording condition details. Holding a relatively constant distance from the subject plays an important role in meaningful data capture.

1) Camera distance from subject, choice of lens, and Dennison Dots should be setup as per the previous step.

2) Establish an F-stop that provides full depth of field focus.

3) Set the focus and the depth of field. Once the focus has been established, tape the lens so that the focus stays set and does not accidentally change.

4) Frame your shot starting with your camera horizontal.  Establish a point on the subject located at the center of the frame.  Centering on this point for each shot, take three consecutive pictures changing the orientation of your camera for every picture.  One orientation is horizontal 180º, one is a vertical orientation rotating the camera to 90º, the final orientation is the opposite vertical position rotating the camera to 270º.  This changing of orientation allows the software to correct for lens distortion.

5) Using either your center point of focus or the Dennison Dots as a reference, move along your subject by 30%.  If done correctly, 60% of your previous frame will be included in your new frame and only 30% of new subject will be introduced into the next series of pictures.

6) Repeat steps 4-5 until the entire subject has been photographed.

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