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Old 10-01-2012, 17:44   #2
blueiron
Senior Member
 
Join Date: Aug 2004
Posts: 13,602
Get loaners of whatever system you are looking at and try them out for 30 days.

What works for one agency may be completely wrong for another agency.

A rural Sheriff's office or Highway Patrol needs a lower F/stop lens than does NYPD, LAPD, or an agency with lots of ambient lighting.
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