I found the the AF of the EF 100mm f/2.8L Macro IS USM is very slow when utilized under water.
I have tried different settings and the best way, for me, was to set the lens AF selector on 0.3 - 0.5 m
In the "full" position the time the get the subject focus ... it is gone.
Do somebody experience the same, or do I need to service my lens.
Any tip to get the full range of this lens underwater ?
I'm using this lens with the 5D3 and an Aquatica casing.