I read a few opinions on taking pictures of strangers somewhere in this forum but cannot find the thread again. So I wanted to bring it up again when taking pictures of strangers for example on a train do you just snap away or do you ask permission first? Also you know when on a plane they tell to turn off all electronics. Can you, do you still snap pictures out the window? (ive seen pictures of people shooting during take off (or landing) so obviously they do but does a DSLR fall under this rule? (Im sure it does but im not sure what the big deal is) Just wanted your opinions.