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Why do some orbs look like 'cells' and others 'solid'?
One
fairly commonly photographed orb are those which appear
to have 'cell-like' structures, such as the one
pictured.
In reality this 'cell' structure is just one type of pattern which can comprise the orbs you see on photographs.
As discussed in the colour section some orbs appear bright and others place, for various reasons. These patterns can be present in both pale and bright orbs, but because of the light intensity of the 'bright' orbs these patterns are not easy to see.
The patterns shown in pale orbs are the results of imperfections in the lens. All lenses are flawed but in expensive cameras multiple lenses are used to reduce imperfections. In cheaper cameras with only one lens these patterns/flaws are more visible.
Metaphorically, one way to look at this is to think of the lens as being like a window. If you sit and look through a window your eyes see a picture - similar to the chip inside the camera - but what you see has to pass through the window - lens - first.
So if the window is dirty - the lens flawed - you will see the dirt 'superimposed' onto the image of what is on the other side of the window.
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