I'm excited by the possibility there's something extraterrestrial involved in UFO reports, but by no means do I believe that's what's going on. I'd have to see aliens for myself (please don't peek into my windows while I'm alone in the dark) before I'm comfortable with the conclusion.
I have seen two UFOs in my life. The first, was when I was eight years old. I was playing outside my apartment a little after dark when I heard something that sounded like a choir holding a note. When I looked up, I saw a glowing orange ball, about the size of a large beach ball, move along a street to an intersection, then turn onto the cross street, moving right in front of my yard. My response was predictable: I ran into the house, screaming my fool head off.
The second was a few years later. Late one night, I stood out under a starry sky gazing at the Moon through my Meade refractor -- a small telescope with mediocre optics, but sufficient for a twelve year old -- when an hour-glass-shaped silhouette slowly drifted between me and the Moon. I have no idea how big it was, it could have been a small, close, and slow, or it could have been huge, distant, and very fast. There was no sound, and it took between five and ten seconds to transition the lunar disk.
I believe both of these objects to have been artificial, but I don't think they were necessarily extra-terrestrial. In all probability the first was a prank of some sort. The second is curious, but undetailed and worthy of little more than a bemused shrug.
Regarding picture quality: I've taken tens of thousands of photos, a dozen or so are good, half the remainder are acceptable representations of my subjects, and the rest are crap. I've never taken a clean picture of a dragonfly -- a subject that displays itself frequently, but buzzes around and away so quickly that I never get more than a blurry streak. Four weeks ago, while visiting an operational, steam locomotive short line, a fellow flew over in an ultralight airplane. Despite having a decent camera turned on and ready to take pictures, I snapped only three photos; two were out of focus, and the third was a beautiful shot of the roof he flew behind with not a single square centimeter of the ultralight visible any longer.
Look at surveillance camera footage sometime when a crime is reported on the news. Any images of a suspect lifted from such videos is always terribly blurry and hard to identify.
And yet, ultralights and convenience store robbers unquestionably exist. It's simply that such things are common enough elements of our daily lives to prevent us from looking at blurry photos of them with doubts about their legitimacy. But personal experience has taught me that a blurry photo does not imply a faked photo. A blurry photo of a flying saucer might be faked, but it might also be a blurry photo of a flock of geese, a weather balloon, an airplane, or maybe something really, really cool. But I won't dismiss it out of hand just because it's blurry. I'll just sigh and wish we were all better photographers.