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Sigma 150-600 C focus issue w/ 5D III
  
 
seattlebruin
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p.1 #1 · p.1 #1 · Sigma 150-600 C focus issue w/ 5D III


Hi all - I was shooting an airshow yesterday with the 5DIII/150-600C combo that I regularly use and noticed a weird thing with zone focusing. If I had the zone focus set to the top nine points in the center grid, occasionally the lens would simply stop trying to AF.

The lens functioned fine in every other mode except those top 9. It took a camera restart to get them working again, but it happened periodically throughout the day.

Anyone else seen something like this?



Oct 22, 2016 at 07:54 PM
Karl Witt
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p.1 #2 · p.1 #2 · Sigma 150-600 C focus issue w/ 5D III


I don't know the parameters of the AF points on the MKIII but are those points valid AF points on F/5.6-6.3 lenses?
Karl



Oct 23, 2016 at 02:54 AM







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