My best advice is to set up a location where the deer are "ok" with cameras.

IE - mineral licks, feeders, feild sides, certain trails, certain scrapes.

I agree that a flash can spook a mature buck, but i and my buddies gets hundreds of mature buck photos a year at certain places where the deer are OK with cameras. One of these places is a scrape that i have had a camera on for 3 years in a row...and every year i get good bucks hitting it.









3 years in a row with mature bucks hitting the same scrape and not fearing the camera. Mineral licks seem to be the best though when it comes to repeat offenders.