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D90 backfocus with primes


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"RE: D90 backfocus with primes"

verdict Registered since 14th Aug 2012
Thu 04-Oct-12 04:19 AM

I didn't listen your warnings.. and usually this is the part where everything starts to go wrong but not this time!

My D90 is now focusing like angel, and I can again fall in love my fast primes and have huge crush to my new Nikkor 17-55 f2.8!

1. Print focuschart, and learn to use it before this "operation" (like one @ http://focustestchart.com/chart.html )

2. Read manual for focus adjusting (D70 D80 D90 & D300 confirmed) like: http://www.howtoshot.com/82/how-to-fix-front-focus-nikon-d90-d80-back-focus-problem/ or http://leongoodman.com/sergei/backfocus.htm

3. Remove lens

4. Locate AF screw behind mirror

5. Keep in mind the location of the screw, then turn it as much as other direction you can by using hexagonscrewdriver (30 degrees?)

6. Put fast prime or some f2.8 lens back on

7. Verify focuspoint using chart

8. Was focusing going wrong or right direction?

7. Repeat parts 5-8 until you microadjust focusing to right position

I got everything 95% right in just a 10 minute! It took a while, let say 30min to microadjust everything 98% right (focus can't be 100% accurate.. even in body that is straight out of the factory, atleast usually).

Now my D90 is all good again, and I won't miss other important shots and my clients are more merrier

A general, generic topic D90 backfocus with primes [View all] , verdict , Tue 28-Aug-12 10:48 AM
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