AF adjustments across multiple bodies?
My four most used lenses are the traditional 14-24, 24-70, 70-200 and 50/1.4
With my D3 I've not seen any real world problem wich focus alignment. If I really pixelpeep using my Gitzo and a focus chart the AF fine tuning might look like this:
D3: 0,+7, 0, -7
But for ordinary use the subjects move more then what the AF offsets.
I then got myself a D3x and getting the most out of it with fast lenses requires a steady hand.
I did notice that the F-mount did have some play so I had it looked at by Nikon and they replaced the D3x F-mount ring which was out of specs.
After this the AF is not what it used to be of course and even hyperfocal shots with the 14-24 are out of focus. :/
The D3x AF-fine tuning do now look like this:
D3x: -15, -5, -15, -7
As you can see difference between the bodies of around 15 units where the D3 focus on target but the D3x behind the target. The 50 is the one which show consistency.
How would Nikon perform a multiple body/lens adjustment?
As we are in the middle of vacation time I'm not parting with my stuff so as of now the large number of fine tuning will be used, but would you guys have another approach to this?
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#1. "RE: AF adjustments across multiple bodies?" | In response to Reply # 0JosephK Nikonian since 17th Apr 2006Mon 22-Jul-13 06:49 PM
Your adjustment numbers suggest a consistent -12 to -15 difference between the two cameras. Since you have not hit the -20 mark, you still have adjustment room. However, if you don't like the numbers being that large, you can ship the D3X to Nikon and they will make some adjustments to move the numbers closer to zero.
Seattle, WA, USA
D700, D200, D70S, 24-70mm f/2.8, VR 70-200mm f/2.8 II,
50mm f/1.4 D, 70-300mm f/4.5-5.6 VR, 18-70mm f/3.5-4.5 DX
#2. "RE: AF adjustments across multiple bodies?" | In response to Reply # 0Ferguson Nikonian since 19th Aug 2004Tue 23-Jul-13 09:14 PM
There's also some good reason to believe that trying to have it adjusted is a losing battle (or at least one not worth fighting) if you get other lenses or cameras, provided you have adequate headroom in the adjustments.
My D800 and D4 are quite different.
The latest example is a 400/F2.8 came in and I shot the D800 first, and it required no adjustment - fine at zero. Put it on a D4 and it required a -20. That was by eye sitting at a baseball game and fiddling with it because my shots were blurry.
So brought it home and did it very carefully multiple times with Focal, and sure enough the peak is around -18. And -1 for the D800.
Huge difference. But I just dial it in and move on. I wouldn't even think of risking shipment (and delay and possibly making it worse) by shipping either lens or (which?) camera back.
In my mind that's what they are for. I see a lot of people who say more or less "if I had to fine tune, I'd send it back and get it adjusted". There seems to be a perception that if fine tune is needed, Nikon's QC failed -- I get the logic. I just don't agree with it.
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#3. "RE: AF adjustments across multiple bodies?" | In response to Reply # 0Leonard62 Nikonian since 15th Mar 2009Wed 24-Jul-13 10:52 AM
I have 13 lenses that have had the AF either adjusted or checked on my D800 and D3X bodies. I found that both bodies gave me nearly the exact results.
9 lenses the same on both bodies. The range was between -10 and +17 , 3 were 0.
3 lenses were within 5 units.
1 lens was within 10 units. I'll have to test this lens again.
On my D800 I tested a total of 34 lenses, 5 of which were the lenses with different TC's attached. 16 lenses required no adjustment at all.
I only tested 15 lenses on my D3X, 7 required no adjustment.
On both of my bodies only 2 needed a - adjustment with most between 0 and +10. 2 lenses were +15 and 1 was +17.
It does look like your D3X could use an adjustment however since you are within the adjustment range and happy with your results I wouldn't send it in.
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