List the steps in photographing a visible fingerprint at a crime scene
What will be an ideal response?
1. Place a camera on a tripod. The face of the camera lens must be parallel with the fingerprint.
2. If using a digital camera, it should be 8 megapixels or above and should be set at the maximum resolution available.
3. Take orientation photos of the location of the fingerprint with an evidence placard in place.
4. Place an adhesive-backed scale on the surface next to the fingerprint. Many agencies require that photographs be taken without and with a scale.
5. Using a macro lens, fill the frame of the viewfinder with the scale and fingerprint.
6. Set the white balance to the dominant lighting in the room.
7. Auto metering may be used.
8. The depth-of-field may require adjustment. F-11 will generally produce sufficient depth-of-field. Adjust the shutter speed to obtain the appropriate exposure.
9. If a flash unit is necessary, position the unit at a 45-degree angle to the print to avoid hot spots. Take a control photograph without the flash to ensure that the flash does not obscure detail of the fingerprint.
10. Side (continuous) lighting positioned at 45 degrees to
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