Aerial photography question

Started Apr 15, 2011 | Discussions thread
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Two Shoes
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Aerial photography question
Apr 15, 2011

I am shooting a project next week of large-scale construction sites from a helicopter. The pilot says the lowest altitude he can achieve is 400-500 feet. The sites are probably 500 square feet in size and I need capture the entire site within the frame. Cropping is acceptable if needed.

I will be shooting with a 7D body.

What focal range(s) should I be considering for the shoot? I have a 24-105mm and a 70-200mm which I figured would be sufficient but, honestly, I'm having a hard time perceiving what a 500sq/ft subject from 500ft away would look like. Do I need something wider? Longer?

TIA

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