Of course its ethical. Many deer have survived this year because of trail cams. If you see a large buck on your cam you are going to pass on anything smaller than what you know is there because of your cam. And chances are if all of your pics of this bruiser are at night then your chances of taking him are slim at best. That is why I am sitting here with a little ground venison in my freezer from last year left and kicking myself in the ass for letting so many deer walk in October cuz I knew there was a big boy there,my camera told me so. 1 more week till the season opens back up. I sure hope he survived those damb slug hunters.....