D3s and 35mm 1.4G...horrible focusing problems!
I'm not sure where to post this, but I recently purchased a well-used D3s and slapped on my trusty Nikon 35mm 1.4G, which has always been spot-on with every other body I've used it on (D700 and D3). However with this recently acquired D3s, the AF is horrible. I just did some testing as I planning on using it for a Wedding on Monday, but the way it looks, being unreliable, it's not going to happen.
At the minimum focusing distance, it needs -20 adjustment (it's back focusing that bad), however, if a subject is a foot away, the back focusing isn't as severe, meaning I would have to change the AF adjustment to roughly -12 or so for the mid range. For subjects further than 10-15' the AF is back focusing by several feet and no AF adjustment can fix it, which I found out today while (fortunately just at a corn maze with my daughter and not during a paid shoot).
To my surprise, the other lenses I tested on it are spot-on with no adjustment needed (14-24mm and 70-200mm VRII).
I'm confused and have no idea what to do. The 35mm is absolutely spot-on, on my other D3 body that is my primary body (The D3s was intended to be its replacement and the D3 would be the backup).
I have no idea what to do at this point so any help would be greatly appreciated.
Thanks in advance.
#1. "RE: D3s and 35mm 1.4G...horrible focusing problems!" | In response to Reply # 0
#2. "RE: D3s and 35mm 1.4G...horrible focusing problems!" | In response to Reply # 0Ferguson Nikonian since 19th Aug 2004Sat 13-Oct-12 04:58 PM
Any chance somehow a default AF value crept in there before you mounted it. I keep reading about rather strange interactions between default values and AF values if the default is set BEFORE putting in the lense AF value. Not sure I believe them, but some claim they end up additive them.
If the default is zero, ignore this suggestion, but if not consider deleting the lens's AF entry entirely (not just set to zero), change the default to zero, and try again.
One day I have to experiment to see if those postings (mostly on dpreview) about their interaction are valid.
But otherwise clueless to help.
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