Nikon D90 - Digital Camera SLR Manuale operativo - Pagina 15

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Camera Pointing Angle

Camera pointing angle is the angle below the

horizon.

In a Cessna 182 or Cessna 172 with a photo

window it is not possible to get a pointing

angle much greater than 45 degrees. Smaller

angles result in the photos being greater in

extent perpendicular to the direction of flight

and thus lower resolution at ground-level.

Haze also becomes more significant at smaller pointing angles. 45 degrees is an excellent

choice although 30 degrees is a reasonable compromise.

Setting Camera Pointing Angle

Taking photos with a consistent pointing angle requires the use of a monopod. The

following pictures show how one squadron sets the pointing angle using a locally

fabricated guide. The guide shown is for 45 degrees.

Camera mounted to monopod. Mono pod rests on seat.

Ponting angle set using guide. Photographer holds

monopod so camera

does not rest against

the photo window

Lens set to 45 degrees