D7100 + Long exposure times: AF works?

Started Mar 26, 2014 | Questions thread
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D7100 + Long exposure times: AF works?
Mar 26, 2014

Thought that low light, either natural or induced by a strong ND filter, wouldn't give the AF enough light to get a lock.  Pictures taken this past Sunday suggest otherwise.

f8 using a 1.8 ND filter, ISO 100, tripod, shutter delay, with both the Nikon 17-55 f2.8 & 70-200 f4 lenses.  Was using the LiveView AF, and it was getting a focus lock.

Was this a fluke?  Or is the LiveView AF that good?

 nkistrup's gear list:nkistrup's gear list
Canon PowerShot G12 Olympus XZ-1 Nikon D7100 Nikon AF-S DX Nikkor 17-55mm f/2.8G ED-IF Nikon AF-S Nikkor 14-24mm f/2.8G ED +3 more
Nikon D7100
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