<p style="margin: 0cm 0cm 10pt;" class="MsoNormal"]<span style="font-size: small; font-family: Calibri;"]I remember the dread I felt when I first noticed a speck *inside* my 24-70. Roll on feelings of guilt, must be terrible photographer, can&rsquo;t even keep expensive equipment in decent condition, going to store my glass in hermetically sealed vacuums, etc., etc., (don&rsquo;t know what a &lsquo;goober&rsquo; is, but it sounds like how I felt at the time). So I rushed to a Canon service centre here in Athens and was told that the speck would have to be huge to show up in pictures (unlike dust on the sensor). My angst-ridden desire to part with hard-earned money (&ldquo;can you take my lens apart and clean it, please?&rdquo was met with benevolent (and honest) scorn. The answer was no. I noticed this on the 85 mm portrait lens, too. Arghh! If you&rsquo;re really worried about it, follow the dust delete data instructions in your camera to correct for it, but if you really can&rsquo;t see any defects, come and join the ranks of wiser, sadder photographers and their blemishes&hellip;
<p style="margin: 0cm 0cm 10pt;" class="MsoNormal"]<span style="font-size: small; font-family: Calibri;"]On a more serious note, Bryan always points out that weather-sealed L lenses are only sealed when a filter is used and the 100 mm isn&rsquo;t an L. There must be imperfections in the glass manufacturing process which QC at Canon lets through because the overall IQ doesn&rsquo;t suffer, but if you truly want to learn the meaning of lens speck pain, Google &lsquo;Canon dust pump&rsquo;&hellip;