I was checking my lenses before an important shoot and was surprised to notice that if I looked through the lens from the mount end that there were a considerable number of spots and marks, apparently on the front element. I always keep filters on lenses for protection, and some of the marks are still apparent with the filter removed.
The lenses concerned are the 100 f2.8 macro and the 70-300 IS zoom. I'm not sure if any of the 'marks' are bubbles inside the lens. Has anyone come across this, and should I be worried?
The lenses concerned are the 100 f2.8 macro and the 70-300 IS zoom. I'm not sure if any of the 'marks' are bubbles inside the lens. Has anyone come across this, and should I be worried?
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