this re-Captcha / Captcha I had to click on images until there wasn't any car to find on 1 of 9 pictures which took 2 steps. Most of the time it takes 3 - 4 pictures to complete. The poor quality of pictures is there to make it difficult / impossible / expensive to try and let an automated process do the job for you, to disable the use of bots..
My phone is a lot smaller than those pictures. Not sure if it's because my phone is small, the fuzziness is more like the bugged graphic avatars we have in the forums - a hell of a lot more fuzzy than your pictures. You can't even see any picture within the picture
... pictures of an iPhone 5s taken with another iPhone 5s It is doable but I noticed not everyone is happy.
Most pictures you do not really see that sharp, you know what is asked and if you can recognize something that looks close to what they are asking then you may click onto. Also sometimes you have to watch closely if they haven't changed the above question in relation to an earlier question with different pictures.