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Nikon D7100 left focus issue

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SaturnN

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I have purchased a D71000 yesterday and immediately tested it for this issue. I have discovered that my camera definitively has some issues with focus points left of from the center. I couldn't quite confirmed that left focus points have back or front focus, but I just couldn't get images with the same sharpness as they were taken by center or right points. I photographed over and over again the same pattern with different focus points and the ones taken with the left points were always softer.

Wo what do you thing is the only way to go just returning the camera and try a new one or send it to service? Is this problem with left focus points a matter of calibration or hardware fault?
 
SaturnN said:
SaturnN wrote:

I have purchased a D71000 yesterday and immediately tested it for this issue. I have discovered that my camera definitively has some issues with focus points left of from the center. I couldn't quite confirmed that left focus points have back or front focus, but I just couldn't get images with the same sharpness as they were taken by center or right points. I photographed over and over again the same pattern with different focus points and the ones taken with the left points were always softer.

Wo what do you thing is the only way to go just returning the camera and try a new one or send it to service? Is this problem with left focus points a matter of calibration or hardware fault?
Click to expand...

You should first ensure you test correctly. And post pictures of your tests. At the moment, it could be as simple as using shutter priority instead of focus priority. You used a steady surface, good light and a fast aperture right? What lens did you test with?

Based on what you provided above, I don't believe that you know what you are doing.
 
And show us some images of left, center and right sensor.

Lock
 
One must also realise that the far left/right focus points are not as 'sensitive' as the centre one(s), I say this cos when I tested the left focus on very uniform patters the focus would be ok, then not etc, but if I used the same focus point and focus on an object with decent contrast and or colour the focus was spot on everytime, so I'm very happy. I think some of the issues people are having with the left focus point is related to the subject and the relative sensitivity of the peripheral sensors vs the centre.
 
Unless you are considering it a possibility that Nikon consistantly builds in the worst sensors on the left side...

Your argument holds when you find both left and right to be off more often compared to the center sensors. This is not the issue the OP is reporting.

It is worrying that after the D800 disaster, Nikon does not seem to be able to solve the issue in the factory even in a later models. Actually, if I was the managing director of this company I would seriously start to worry. Even if a minority of bodies were affected, this is going to cost Nikon more money on the long end than they are gaining at the short end. This simply means Nikon does not have the financial buffers to solve mistakes, and improve their products.

lock
 
I tried everything possible, used 5 different lenses, had camera on tripod and good light. The most obvious was this issue with Nikon 35 1.8. I had no issues with right and center points and always with left ones. Then I used my old D90 and there were absolutely no problems. And again, all pictures focused on right or center were ok and none focused on left. I bit too much for an user error don't you think?

I will post some pictures.
 
lock said:
lock wrote:

is worrying that after the D800 disaster, Nikon does not seem to be able to solve the issue in the factory even in a later models. Actually, if I was the managing director of this company I would seriously start to worry. Even if a minority of bodies were affected, this is going to cost Nikon more money on the long end than they are gaining at the short end. This simply means Nikon does not have the financial buffers to solve mistakes, and improve their products.

lock
Click to expand...
Well, that would be assuming that after the D800, other cameras with the same focus module suffered from the same defect. That is not the case.

So far, on DPReview, there have been two posts claiming the "left focus" issue for the D7100. This one and a previous one. In both cases no evidence was submitted or a test procedure explained. If you Google for the left focus issue, I found only hits that point to the D800. There is nothing for any other Nikon camera. In other words, these are both bogus posts meant to stir up more gossip and flame wars.
 
I did a quick check for left/right focus issues when I was fine tuning my 500mm, which I did at 83 ft. Left showed sharper than center and right. It was just the three shots, hardly conclusive. There are so many variables it would take a lot of testing with various lenses and several of the focus points to draw a definitive conclusion.

What I do know is that I am getting some super sharp pictures with both the 50-500 and the 24-70 in real life.
 
why wait? bring it back to where you got it from and get another. Time is money and if you got a bad product, exchange it for a good one.

I swear, I am the luckiest man around. I have never had any of the problems I keep seeing people complain about.
 
I read post on various Nikon forums. I therefore know there are more flies on the cake.

Nevertheless, Nikonman09 documented it well. In the same thread, TurboBB also showed pictures, although some could not see it. But it is there alright. Check his full sized pictures in the gallery with the sigma and the Nikon at F3.5. You will see that the lens that focusses widest (the Sigma at 2.8) suffers from a BF, whereas the Nikon 16-85 shows no such problems. So that's two with pictures I know of without searching. Then there is fireplace33. No pictures, but who am I to not trust him not reporting it correctly? We know about Lordbeau, but he did not show samples either. Than we have Gabe7, who returned two D7100. He showed pictures of the second, although he was slated as a newby that did not know what he was doing. According to his tests the third one was ok.

There will be more for sure, but you may have to surch for it. The D7100 isn't going like crazy here. So the numbers of bad bodies may be too limited to create hysteric scenes. However, there are bodies suffering from the same issue the D800 had. Probably a lower percentage (hope so), but it actually should have been solved by now.



lock
 
and moderators will keep saying that he isn't one. The "author" just made a new account to complain about fake issues. Is it a game to bring more traffic in dpreview or just a way to bash Nikon so-that those fake "issues" come up in google when someone is looking to buy a camera ?...
 
"Trying everything" is obviously not an answer to the question. If you want our help, how about you list the following?

- pictures with Exif

- lenses you tested with

- step-by step guide on what you exactly did

At this stage, because you are so evasive about this, I think you're making this up. Proof me wrong by supplying the above and I'll help you and even apologize.
 
So, the Sigma did not focus but the Nikon 16-85 did? And that is a camera problem?!??

No! That is a Sigma lens problem. You're complaining to the wrong manufacturer.
 
Deleted-pending said:
FTH wrote:

and moderators will keep saying that he isn't one. The "author" just made a new account to complain about fake issues. Is it a game to bring more traffic in dpreview or just a way to bash Nikon so-that those fake "issues" come up in google when someone is looking to buy a camera ?...
Click to expand...
Time to close the thread. No pics, no evidence, evasive behavior by the OP to post evidence with Exif.
 
PepsiCan said:
PepsiCan wrote:
PepsiCan said:
FTH wrote:

and moderators will keep saying that he isn't one. The "author" just made a new account to complain about fake issues. Is it a game to bring more traffic in dpreview or just a way to bash Nikon so-that those fake "issues" come up in google when someone is looking to buy a camera ?...
Click to expand...
Time to close the thread. No pics, no evidence, evasive behavior by the OP to post evidence with Exif.
Click to expand...
No reason to close any thread. There are lemons in all makes and models. Both lens and camera. No rules are broken, as yet, and discussions can follow. He may not be what he seems...but the welcome mat stays out till proof otherwise. That said, The d7100 seems to be pretty solid a role out to this point. Only a very few outliers like this so far. In this case, we seem to have a lens issue that the pixel density of 24mp in APS-c has brought to light.
 
Mako2011 said:
Mako2011 wrote:
Mako2011 said:
PepsiCan wrote:
Mako2011 said:
FTH wrote:

and moderators will keep saying that he isn't one. The "author" just made a new account to complain about fake issues. Is it a game to bring more traffic in dpreview or just a way to bash Nikon so-that those fake "issues" come up in google when someone is looking to buy a camera ?...
Click to expand...
Time to close the thread. No pics, no evidence, evasive behavior by the OP to post evidence with Exif.
Click to expand...
No reason to close any thread. There are lemons in all makes and models. Both lens and camera. No rules are broken, as yet, and discussions can follow. He may not be what he seems...but the welcome mat stays out till proof otherwise. That said, The d7100 seems to be pretty solid a role out to this point. Only a very few outliers like this so far. In this case, we seem to have a lens issue that the pixel density of 24mp in APS-c has brought to light.
Click to expand...
 
lock said:
lock wrote:

I read post on various Nikon forums. I therefore know there are more flies on the cake.

Nevertheless, Nikonman09 documented it well. In the same thread, TurboBB also showed pictures, although some could not see it. But it is there alright. Check his full sized pictures in the gallery with the sigma and the Nikon at F3.5. You will see that the lens that focusses widest (the Sigma at 2.8) suffers from a BF, whereas the Nikon 16-85 shows no such problems. So that's two with pictures I know of without searching. Then there is fireplace33. No pictures, but who am I to not trust him not reporting it correctly? We know about Lordbeau, but he did not show samples either. Than we have Gabe7, who returned two D7100. He showed pictures of the second, although he was slated as a newby that did not know what he was doing. According to his tests the third one was ok.

There will be more for sure, but you may have to surch for it. The D7100 isn't going like crazy here. So the numbers of bad bodies may be too limited to create hysteric scenes. However, there are bodies suffering from the same issue the D800 had. Probably a lower percentage (hope so), but it actually should have been solved by now.

lock
Click to expand...

Thanks lock, for your implied trust!
My report was made in good faith.

I didn't post images, because of the effort needed to prepare such a detailed report and then make posts back and forth to "prove" that I did it right and possibly even then suffer the onslaught of objections. But I will make the effort in this case and post some images a bit later. Please be a bit patient. It's raining this weekend so maybe I'll get a chance.
 
Deleted-pending said:
FTH wrote:
Deleted-pending said:
Mako2011 wrote:
Deleted-pending said:
PepsiCan wrote:
Deleted-pending said:
FTH wrote:

and moderators will keep saying that he isn't one. The "author" just made a new account to complain about fake issues. Is it a game to bring more traffic in dpreview or just a way to bash Nikon so-that those fake "issues" come up in google when someone is looking to buy a camera ?...
Click to expand...
Time to close the thread. No pics, no evidence, evasive behavior by the OP to post evidence with Exif.
Click to expand...
No reason to close any thread. There are lemons in all makes and models. Both lens and camera. No rules are broken, as yet, and discussions can follow. He may not be what he seems...but the welcome mat stays out till proof otherwise. That said, The d7100 seems to be pretty solid a role out to this point. Only a very few outliers like this so far. In this case, we seem to have a lens issue that the pixel density of 24mp in APS-c has brought to light.
Click to expand...
Click to expand...
 
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