Originally posted by lytrytyr Is this separation of the laminated aspheric element?
I wish I would know that! Did you hear about this happening or this being the reason?
Would be bad news, because this voids any hope that a simple lens element cleaning can fix this.
I didn't dare disassembling the kit yet, because its fogging is very slight (at this point of time at least), and I find this lens very useful for what it is, i.e. a reliable buddy e.g. for light-weight travel, pretty never getting ghosting bubbles due to only 11 elements, and around its sweet spot (around the 24mm mark) it performs almost like a limited prime lens.
And if you do e.g. 'auto contrast' in Photoshop, there's no difference to tell from shots with other clear lenses anyway.
Please have a look yourself with three photos:
1) we are looking from the back into the lens, where the damage appears deliberately exaggerated as much as possible, with the help of direct sunlight and a black shade, and the contrast is pushed up further in post-processing. You see it's not fungus, but an even spread of crystaline looking defects, which are probably (semi) transparent (not just white opaque stuff). Which may support your theory well.
2) an example shot with this lens at 40mm
3) the same shot with my DA 40mm Limited. Its sky is brighter and its tree is darker. But only slightly so.
For now the kit can get away with its fogging issue, and all I hope it doesn't get worse...