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Subject: "What to do? Bad lens? Bad D7000 body?" Previous topic | Next topic
Omaha Registered since 07th Jan 2012Thu 31-Jan-13 02:31 AM
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"What to do? Bad lens? Bad D7000 body?"
Thu 31-Jan-13 02:33 AM by Omaha

Omaha, US
          

I'm facing a decision.

I shoot a D7000. My primary lens is the 18-200.

I decided to start working up a collection of primes. I wanted faster and I wanted sharper. Makes sense, right?

So my first venture into this is a 50mm f/1.4 D. Got it a couple of weeks ago.

And I'm not happy.

Honestly, I get consistently better shots from my 18-200.

I just put together a bunch of test images. You can see them here: http://speedbinder.com/blog/uncategorized/nikon-50mm-f1-4-d-focus-test/

Those were taken with the camera mounted on a tripod, f/1.4, ISO 1000. I did this on my kitchen table, so I had whatever light was in the room.

I systematically went through and adjusted the AF Fine Tune in increments of five units. I took at least five shots at each fine tune value, and selected the best one to show on the web page. Focus mode was AF-A, using only the center focus point.

I also took a series of shots with the subject carefully hand focused via extreme zoom in Live View mode.

Each shot was loaded into ACR. I applied a smidge of sharpening, and then saved them out as PSD files. I then loaded them into Illustrator and saved the JPG's as 100% crops. You are seeing a small slice from the center of the image on these samples.

So what I think I am seeing is that this lens cal ALMOST be adjusted into good focus, but not quite. Even at Fine Tune = -20, its still a little off compared to the carefully hand focused shots. If the AF fine tune went to -30, then maybe we would have it.

So, what to do?

Is this the lens? I've not done a test, but I've never had reason to doubt my D7000 before. My 18-200 produces sharper shots than these, under whatever sloppy conditions I happen to find.

Do I just return the lens and try another one? Do I send the lens/body off to Nikon for adjustment?

Any thoughts?

Visit my Nikonians gallery
Most of my Nikon photos end up here.

  

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This is a hot, active topic!What to do? Bad lens? Bad D7000 body? [View all] , Omaha , Thu 31-Jan-13 02:31 AM
 
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jbloom Gold Member
31st Jan 2013
1
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RLDubbya Silver Member
31st Jan 2013
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Gamecocks Silver Member
31st Jan 2013
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Omaha
31st Jan 2013
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aolander Silver Member
31st Jan 2013
9
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Rassie Silver Member
31st Jan 2013
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gfinlayson Silver Member
31st Jan 2013
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km6xz Moderator
31st Jan 2013
7
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J_Harris Silver Member
31st Jan 2013
8
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Omaha
31st Jan 2013
12
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agitater Gold Member
31st Jan 2013
10
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Omaha
31st Jan 2013
11
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gfinlayson Silver Member
31st Jan 2013
13
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Omaha
31st Jan 2013
14
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gfinlayson Silver Member
31st Jan 2013
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Omaha
31st Jan 2013
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gfinlayson Silver Member
31st Jan 2013
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Omaha
31st Jan 2013
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gfinlayson Silver Member
31st Jan 2013
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cwils02 Gold Member
06th Feb 2013
26
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ericbowles Moderator
02nd Feb 2013
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Ellis Feibush Silver Member
03rd Feb 2013
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Matthew Gregory Silver Member
04th Feb 2013
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04th Feb 2013
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Matthew Gregory Silver Member
05th Feb 2013
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Ellis Feibush Silver Member
06th Feb 2013
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