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Need some advice after home burglary yesterday

ericbowles

Atlanta, US
10530 posts

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"RE: Need some advice after home burglary yesterday"

ericbowles Moderator Awarded for his in-depth knowledge and high level skills in various areas, especially Landscape and Wildlife Photoghraphy Writer Ribbon awarded for for his article contributions to the community Donor Ribbon awarded for his very generous support to the Fundraising Campaign 2015 Nikonian since 25th Nov 2005
Fri 19-Jul-13 11:30 AM

Just a minor clarification. The D600 uses the CAM 4800 AF system. The D7000 uses the CAM 4800 DX AF system - a different layout optimized for DX. The D800 and D4 use the CAM 3500 AF system. The D7100 uses the CAM 3500 DX AF system.

The D800 and D4 AF systems are a little better than the D600 beyond f/5.6 with four more active sensors and more of those as cross sensors. But the D600 is still quite good.
http://imaging.nikon.com/lineup/dslr/d800/features03.htm

http://imaging.nikon.com/lineup/dslr/d600/features02.htm

There is a much greater drop off in the DX version of these AF systems. For example, the D7100 has only one reliable AF sensor beyond f/5.6. The layout is not disclosed on the D7000, but I would assume it to be very similar to the D7100 system.
http://imaging.nikon.com/lineup/dslr/d7100/features01.htm

This issue mainly comes into play with lenses or lens/teleconverter combinations that go beyond f/5.6 wide open. That's not the case with any of the Nikon lenses until you add a teleconverter. But the long zooms from Sigma - the 50-500 and 150-500 - have only one reliable sensor at the long end.

By reliable, I am referring to the fact that in great light with a good AF target you may be able to get AF to work, but it is significantly less accurate and will be more likely to hunt or give up.

Eric Bowles
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A general, generic topic Need some advice after home burglary yesterday [View all] , blakeboyd , Sun 07-Jul-13 03:21 AM
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