#1. "RE: AF Fine tuning" | In response to Reply # 0blw Nikonian since 18th Jun 2004Sun 22-Feb-09 02:20 PM
It's used for adjusting minor inconsistencies between lens and AF in the body. If you AF results are good, there's no need to use it. If you can carefully MF a lens better than the AF can do it, you could use the AF fine tuning to improve the AF results.
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#6. "RE: AF Fine tuning" | In response to Reply # 1QMaze Registered since 09th Dec 2008Tue 24-Feb-09 01:22 PM
I've never actually played around with this feature and wondering, do you set up the lens and then give it a name, or does the camera take care of managing which lens is put on the body, once its adjusted. I'm assuming the user creates the various adjustments and you then choose form the menu once you put on corresponding lens, correct?
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#2. "RE: AF Fine tuning" | In response to Reply # 0
> when should I use it?
Possibly, as Nikon suggest in the instructions, never.
The greatest challenge is testing to a high enough standard to differentiate between less than perfect technique and an actual issue.
With very careful testing none of my more than 20 lenses need calibration.
Seeing an example of a problem illustrated with an example using Nikon's guidance on getting good results with AF seems infrequent.
The facility is handy if a lens or body is damaged and you cannot ship it for repair straight away, or if you want to change how much depth of field you get in front or behind the subject by making AF lock on in front or behind what the AF system regards as correct.
There are occasional threads claiming as much as plus or minus 20.
The enclosed pictures show nil with a good lens and minus 10.
If a lens or camera is that bad with first class testing it is obviously faulty and needs a repair or if new a replacement.
Attachment#1 (jpg file)
Attachment#2 (jpg file)
Photography is a bit like archery. A technically better camera, lens or arrow may not hit the target as often as it could if the photographer or archer does not practice enough.
#3. "RE: AF Fine tuning" | In response to Reply # 0
To perform fine tuning of your lenses, you need a very carefully set up test. Some use home-built setups, but you need to know what you are doing. A calibration system called "LensAlign" can also be bought, see the link below. It has been reviewed by the Image doctors here at Nikonians in one of their podcasts, so I'm sure that it works. In any case, I highly recommend to study this matter carefully before doing anything, otherwise you may make your lenses worse!
Bay Area Nikonian
#4. "RE: AF Fine tuning" | In response to Reply # 3MichaelAlan Registered since 25th Sep 2008Mon 23-Feb-09 04:42 PM
When I shot Canon then this feature was a godsend! I had to set up my Mark III and go through all my lenses to get them to the sharpness that they should have been out of the box. Canon calls this micro adjustments.
My Nikon stuff on the other hand WAS sharp out of the box and I had no need to fine tune my lenses. I DID have to do so with my 70-200mm when using my 2X Nikon teleconverter however. I just disable that fine tune until the 2X is mounted with the 70-200mm.
Word to the wise, this feature is not serial number specific. That means if you fine tune one 70-200mm and use another one (maybe a buddies or if you have one on loan while yours is in for repair, etc) then it has no idea that you have a DIFFERENT 70-200mm mounted and will apply the same fine tuning settings... This could be bad if the other lens you mounted doesn't need it and it will throw your images OOF.
#5. "RE: AF Fine tuning" | In response to Reply # 4walkerr Nikonian since 05th May 2002Mon 23-Feb-09 05:02 PM
There's really no reason to disable the feature until you mount the 70-200mm with the 2X. The system is smart enough to apply an off-set only to the lenses you've entered into its database, and it treats lens plus teleconverter combos separately from the lens alone. If only your 70-200mm and 2X combo requires it, and that's the only entry you've made, that's the only lens that will be affected.
#7. "RE: AF Fine tuning" | In response to Reply # 5migpower Registered since 18th Jul 2004Tue 24-Feb-09 01:26 PM
I must say that my 24-120 VR reborn as a sharp lens after testing it. -9 !!
All the rest is ok!
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#8. "RE: AF Fine tuning" | In response to Reply # 7Andy_F Registered since 17th Feb 2009Fri 27-Feb-09 03:35 AM
Have a dozen lenses. All Nikon's but one which is a Sigma. Tested every single one. No AF fine tune adjustments required.
I guess I shouldn't be surprised because they were all tack sharp on my D200 and many on my F5 before that. May have "lucked out" with the Sigma.
D700, D40X, and more Nikkor lenses than one should be allowed
#9. "RE: AF Fine tuning" | In response to Reply # 5MichaelAlan Registered since 25th Sep 2008Fri 27-Feb-09 06:08 PM
>There's really no reason to disable the feature until you
>mount the 70-200mm with the 2X. The system is smart enough to
>apply an off-set only to the lenses you've entered into its
>database, and it treats lens plus teleconverter combos
>separately from the lens alone. If only your 70-200mm and 2X
>combo requires it, and that's the only entry you've made,
>that's the only lens that will be affected.
I could have sworn that when I tried enabled the fine tune adjustment the 70-200mm + 2x converter that it fine tune adjustment carried over to just the 70-200mm when mounted alone. I will go back and check again though. I did this check last Fall so we'll see what I missed.
#10. "RE: AF Fine tuning" | In response to Reply # 9walkerr Nikonian since 05th May 2002Fri 27-Feb-09 06:53 PM
It definitely doesn't do that with Nikon brand teleconverters. You should see a separate entry with a potentially different adjustment value. I'm not certain how it handles third party teleconverters since I don't own one.