<p>Sarah and Bob, thanks for the info. A while ago I tougth about removing AA filter completely as I'm pretty sure that this is what happened too (scratch or crack), but there is a major problem: not having 'dust cleaning' anymore.</p>
<p>From my online research there is no way to replace only the AA filter in the 5D MKIII, that's the reason one need a new sensor entirely. I hope I'm very wrong!</p>
<p>If I was only using my camera to photograph, there would be no problem with clone tool, but in video, whenever there is a camera movement, there is a big problem. Trying to correct a take frame to frame is SLOW. And often I'm not the one editing the material, so I'm pretty sure I can make any editor very angry.</p>
<p>I found this place:</p>
<p>Canon Factory Service Center<br /> 100 Ridge Road<br /> Jamesburg, NJ 08831<br /> Phone: 866-510-1335</p>
<p>Problem is I can't find their e-mail anywhere on internet so I still can't contact them to ask for an estimate of time and price.<br>
Edit: We wrote at the same time. At worst case I'll see if my friend can help me taking the camera there and explaining that we would need a fast service.</p>