AF speed D700 slower than D3? how come ?

Started Aug 7, 2009 | Discussions thread
Marianne Oelund Veteran Member • Posts: 7,353
Useless and misleading numbers

em_dee_aitch wrote:

More numbers...

http://www.imaging-resource.com/PRODS/D3/D3A.HTM

http://www.imaging-resource.com/PRODS/D700/D700A.HTM

Compare the "shutter lag, prefocused" with the "shutter lag, full auto focus." The prefocused number is not much different, because it's effectively cheating, but this is the number that marketing depts will quote for obvious reason. The functional number that really matters is the "full auto focus" number, because that is your systemic lag. Notice that the D700 takes over twice as long. Again, this is huge. If you think the D700 is as good, you're kidding yourself.

These extremely limited tests do not begin to scratch the surface of the AF speed topic. The situation can change completely, just by mounting a different lens on the camera, or even by just turning the zoom ring!

The quoted test results apply only to the particular lens used for the test. Attempting to extrapolate them to other lens cases is pointless.

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GBJ
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