I dont shoot macro very often but when I do its like 3-4 long dives a day for several days and normally in Indonesia. Last trip I bought a Tokina 100mm macro lens and used this for the whole trip and used with the Aquatica close up lense (+5 and +10). The reason why I bought the Tokina was because I didnt want to spend the money on the 105mm when I dont shoot macro often. I was surprised with the quality and performance of the Tokina 100mm macro. The AF was super fast and pin point accurate and there wasnt a need to go manual. There was some very fine rocking back and fro when using the +10 but this was in only a few rare occasions during the trip.
I have my D500 housed in an Aquatica AD500.
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