Nikon D90 - Digital Camera SLR Operation Manual - Page 18

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Nikon D90 - Digital Camera SLR Operation Manual
18
Determining Number of Photos
For spot photography, take multiple photos as appropriate. More are better than less!
For route photography and aerial mapping, one must determine the length of each leg.
Using a map, determine each leg length in statute miles. Multiply the leg length in statute
miles by 5280 feet per mile. Divide that number by the length of each photo less the
photo overlap (see "Selecting a Time Interval" above). The result is the number of photos
that need to be taken during the leg. Program the Multi Function Timer Remote Control
with the result. For example, for a leg length of 8 miles and a 25% overlap of photos with
each photo 800 feet wide, 5280x8=42,240. (100%-25%) x 800 feet = 600 feet.
42,240/600 = 70 photos.