You can see from these that they are all different, many have been taken in the same patch of sky so it cannot ever be "dust particles" as some claim, They are different sizes and shapes, different colours and forms and at different amounts of luminosity.

They are fragments of larger pictures, close ups.

Personally, I don't know of any smears on lenses that disappear or appear or that change shape. And I am not suggesting that it is another phenomenon!

Approximately eleven pictures were taken over a short period of time at longest two minutes. Aimed at three to four specific points where orbs were shown on the last image.