Would not it to be too close range wise to get to the subject ? even with 105 you have to be pretty close... Even with DX,
I never had a chance to do shots with 60mm but did with 105 and 200
Linda got the 60 in the water Sunday, and was quite happy with it.
It's more autofocus friendly than the 105, and the working distances
were not a problem. We dive Monterey, and you want to get as
much of that green water as possible out from between you and
the subject. Heck, I shoot a 50mm on a full frame "sensor" (film),
and working distance is not a problem.