autofocus screw drive question

Started May 28, 2012 | Discussions thread
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Burnie
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autofocus screw drive question
May 28, 2012

I've been reading that the motor is less powerful in lower end models such as my D90 vs say a D3. But all I can find online is anecdotal opinions. Does anyone have proof and detailed evidence? Specs difference maybe?

I mean my 80-200 MKII seems pretty fast on my d-90. I guess I'll chalk it down to you don't miss what you don't know.

 Burnie's gear list:Burnie's gear list
Nikon D80 Nikon D90 Sigma 10-20mm F4-5.6 EX DC HSM Tamron AF 28-75mm F/2.8 XR Di LD Aspherical (IF) Sigma 30mm F1.4 EX DC HSM +8 more
Nikon D3 Nikon D90
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