Canon 24-105L flare issue
Argh! Just got my EOS 5D and 24-105L lens in time for a 6-month trip, then all sorts of rumours appear that there are problems with flare in certain situations, that Canon have stopped selling the lenses and that they are offering a "repair". See this thread . I haven't heard anything official from Canon or my dealer yet. I doubt there is time to get my lens "repaired" before the trip, so I'll just have to work around it, which shouldn't be difficult as it seems the phenomenon only occurs in very specific lighting situations (where there is a bright point source of light at the edge or just outside of the edge of the frame). As you can see I was able to reproduce the problem although the posted image is the most severe I was able to create. Despite taking about 10 shots directly into a halogen desk lamp at a variety of angles, most showed no unusual flare.