I mostly work with Notes app in iOS and every time when I capture an image from Note app specific camera, it saves in Photo library. So after making a note I have to delete few images every time to clean my library. So is there any way of stopping that?
Yes. That is possible in iOS 10 or later version ( I think). However to do that simply you have to turn off a specific option provided in Notes settings.
Goto Settings -> Notes
Then turn off Save Media to Photos. That will solve your problem.