D4/ D800(E) - Left AF Problem

Started Apr 18, 2012 | Discussions
bachie
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D4/ D800(E) - Left AF Problem
Apr 18, 2012

Recently I heard Nikon's new D800 have a left AF problem.
So I tested my D800 and my friends' D800/D800E/D4.

I checked 8 bodies. (four D800s, two D800Es, two D4s)

  • D800 : 4

  • D800E : 2

  • D4 : 2

Test condition

  • Wide lens (14-24 F2.8, 24mm F1.4G, 35mm F1.4G) with distance of 3m

  • Standard lens (Sigma 50mm F1.4, AF 85mm 1.4D ) with distance of 8m

  • Camera is fiexed on the tripod.

  • Every tests are confirmed by comparing 'contrast AF' in live-view mode.

  • My lenses are perfect in D700 and D3s.

Auto focus near center is really good.
Right side AF is slightly de-focused (not so serious).

All of these camera, however, show significant focusing error in case of left AFs.
3 left AF points result in further focal plane.

When I checked AF ability of my D800 'near' the target, I didn't notice these problem. I think this is really big problem.
Most of all, I found the same AF problem not only in D800(E) but also in D4.

Auto focus module for these new products seems to be not so accurate.
I am very disappointed with this test.

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bachie

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spho-c
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Re: D4/ D800(E) - Left AF Problem
In reply to bachie, Apr 18, 2012

What serial numbers did the D4s have?

JO

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Lea5
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Same problem with my D4
In reply to bachie, Apr 18, 2012

checked it with the 14-24 at 14mm and 24mm.

Focussing through VF

Center point: very good
Outer right point: good
Outer left point: very bad

Serial#: 2009XXX

I'll check it with my 50mm 1.4 G and 85 1.4 D too.....

thanks

bachie wrote:

Recently I heard Nikon's new D800 have a left AF problem.
So I tested my D800 and my friends' D800/D800E/D4.

I checked 8 bodies. (four D800s, two D800Es, two D4s)

  • D800 : 4

  • D800E : 2

  • D4 : 2

Test condition

  • Wide lens (14-24 F2.8, 24mm F1.4G, 35mm F1.4G) with distance of 3m

  • Standard lens (Sigma 50mm F1.4, AF 85mm 1.4D ) with distance of 8m

  • Camera is fiexed on the tripod.

  • Every tests are confirmed by comparing 'contrast AF' in live-view mode.

  • My lenses are perfect in D700 and D3s.

Auto focus near center is really good.
Right side AF is slightly de-focused (not so serious).

All of these camera, however, show significant focusing error in case of left AFs.
3 left AF points result in further focal plane.

When I checked AF ability of my D800 'near' the target, I didn't notice these problem. I think this is really big problem.
Most of all, I found the same AF problem not only in D800(E) but also in D4.

Auto focus module for these new products seems to be not so accurate.
I am very disappointed with this test.

-- hide signature --

bachie

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Lea5
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D4 and 85mm 1.4 D
In reply to Lea5, Apr 18, 2012

Not as bad as the 14-24mm but still visible.

Center point: very good
Outer right point: very good
Outer left point: not good

checking the 50mm 1.4 G now...

Lea5 wrote:
checked it with the 14-24 at 14mm and 24mm.

Focussing through VF

Center point: very good
Outer right point: good
Outer left point: very bad

Serial#: 2009XXX

I'll check it with my 50mm 1.4 G and 85 1.4 D too.....

thanks

bachie wrote:

Recently I heard Nikon's new D800 have a left AF problem.
So I tested my D800 and my friends' D800/D800E/D4.

I checked 8 bodies. (four D800s, two D800Es, two D4s)

  • D800 : 4

  • D800E : 2

  • D4 : 2

Test condition

  • Wide lens (14-24 F2.8, 24mm F1.4G, 35mm F1.4G) with distance of 3m

  • Standard lens (Sigma 50mm F1.4, AF 85mm 1.4D ) with distance of 8m

  • Camera is fiexed on the tripod.

  • Every tests are confirmed by comparing 'contrast AF' in live-view mode.

  • My lenses are perfect in D700 and D3s.

Auto focus near center is really good.
Right side AF is slightly de-focused (not so serious).

All of these camera, however, show significant focusing error in case of left AFs.
3 left AF points result in further focal plane.

When I checked AF ability of my D800 'near' the target, I didn't notice these problem. I think this is really big problem.
Most of all, I found the same AF problem not only in D800(E) but also in D4.

Auto focus module for these new products seems to be not so accurate.
I am very disappointed with this test.

-- hide signature --

bachie

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Lea5
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D4 and 50mm 1.4 G
In reply to Lea5, Apr 18, 2012

Center point: very good
Outer right point: very good
Outer left point: good

No issues here with the 50mm 1.4 G.

Could be a lens issue, not an AF problem

I'll check my other lenses tomorrow.

And I will fine tune the lenses too. Perhaps the Problem is solved after that.

Lea5 wrote:
Not as bad as the 14-24mm but still visible.

Center point: very good
Outer right point: very good
Outer left point: not good

checking the 50mm 1.4 G now...

Lea5 wrote:
checked it with the 14-24 at 14mm and 24mm.

Focussing through VF

Center point: very good
Outer right point: good
Outer left point: very bad

Serial#: 2009XXX

I'll check it with my 50mm 1.4 G and 85 1.4 D too.....

thanks

bachie wrote:

Recently I heard Nikon's new D800 have a left AF problem.
So I tested my D800 and my friends' D800/D800E/D4.

I checked 8 bodies. (four D800s, two D800Es, two D4s)

  • D800 : 4

  • D800E : 2

  • D4 : 2

Test condition

  • Wide lens (14-24 F2.8, 24mm F1.4G, 35mm F1.4G) with distance of 3m

  • Standard lens (Sigma 50mm F1.4, AF 85mm 1.4D ) with distance of 8m

  • Camera is fiexed on the tripod.

  • Every tests are confirmed by comparing 'contrast AF' in live-view mode.

  • My lenses are perfect in D700 and D3s.

Auto focus near center is really good.
Right side AF is slightly de-focused (not so serious).

All of these camera, however, show significant focusing error in case of left AFs.
3 left AF points result in further focal plane.

When I checked AF ability of my D800 'near' the target, I didn't notice these problem. I think this is really big problem.
Most of all, I found the same AF problem not only in D800(E) but also in D4.

Auto focus module for these new products seems to be not so accurate.
I am very disappointed with this test.

-- hide signature --

bachie

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PhillipAnthony
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Re: D4 and 85mm 1.4 D
In reply to Lea5, Apr 18, 2012

Hi, I have just sent my D800 back to the shop for a refund because of its terrible outer focussing problem!! The left focus point COMPLETELY back focus by 20 af fine tune points and also the right is half that much out yet the middle is fine! So annoyed cos its sensor is AMAZING! They are sending to Nikon UK to confirm a problem before refund so i will let you guys know the outcome. I will know in next couple of days. If they can do a quick fix then i would happily keep the camera. Nikon might actually admit a problem!!!!
--
Phill

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PhillipAnthony
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Re: D4 and 85mm 1.4 D
In reply to PhillipAnthony, Apr 18, 2012

Serial number was 8000......
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Phill

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bachie
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Re: I highly recommend to compare AF with CONTRAST AF in live view
In reply to bachie, Apr 18, 2012

At first, I think this problem is originated from low resolution of outer region of lens. But, when I use CONTRAST AF in live view mode, I can get sharp images.

So in order to distinguish current AF problem from lens resolution, contrast AF test is highly recommended.

(My D800) SN: 5600XXX

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bachie

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Lea5
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Re: D4 and 85mm 1.4 D
In reply to PhillipAnthony, Apr 18, 2012

I need to check my D4 more, before I call my shop. Tomorrow I will take my time in the studio to check the D4 with all my lenses, plus AF finetuning.

I'm not worried at the moment, cause my D3X had a few Af issues too, which was solved very quickly.

PhillipAnthony wrote:

Hi, I have just sent my D800 back to the shop for a refund because of its terrible outer focussing problem!! The left focus point COMPLETELY back focus by 20 af fine tune points and also the right is half that much out yet the middle is fine! So annoyed cos its sensor is AMAZING! They are sending to Nikon UK to confirm a problem before refund so i will let you guys know the outcome. I will know in next couple of days. If they can do a quick fix then i would happily keep the camera. Nikon might actually admit a problem!!!!
--
Phill

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Dominique Dierick
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Not here.
In reply to bachie, Apr 18, 2012

Auto focus module for these new products seems to be not so accurate.

Maybe that is a bit too fast a conclusion? At least I do not have problems with mine, with any of the AF sensors. I just tried once more with the 85 1.4G left sensors. Spot on at the distance you give, at close distance, and at infinity.

D.

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Dominique Dierick
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Not a general fault, images
In reply to Lea5, Apr 18, 2012

Here are my results with 85 1.4G left AF sensor. If you can find a problem here, let me know, cuz I don't see one. Which does not mean there will be cameras with problems, lenses with issues, and user error. That has always been the case. It just doesn't seem like a general issue to me.

Close range:

Little test at 6 meter, focused on ashtray

Little test at infinity, through pouring rain

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Leonard Shepherd
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Re: D4/ D800(E) - Left AF Problem
In reply to bachie, Apr 18, 2012

bachie wrote:

So I tested my D800 and my friends' D800/D800E/D4.
I checked 8 bodies. (four D800s, two D800Es, two D4s)

  • D800 : 4

  • D800E : 2

  • D4 : 2

Maybe you are the only person in the world with testing access to 8 bodies

Presumably if you have access to so many bodies plus D700 and D300, supplying a link to the test target (good or bad for calibration) will not be a problem.

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Leonard Shepherd

Photography could be easier - if cameras and lenses came with an increase in skill button.

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russbarnes
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Re: Make sure you report it to Nikon!
In reply to bachie, Apr 18, 2012

I hope people are following through with Nikon as I am because as yet I am not hearing about a single individual who has had this fixed. Not one...and I am now close to returning my camera to the retailer and waiting 6 months.

bachie wrote:

Recently I heard Nikon's new D800 have a left AF problem.
So I tested my D800 and my friends' D800/D800E/D4.

I checked 8 bodies. (four D800s, two D800Es, two D4s)

  • D800 : 4

  • D800E : 2

  • D4 : 2

Test condition

  • Wide lens (14-24 F2.8, 24mm F1.4G, 35mm F1.4G) with distance of 3m

  • Standard lens (Sigma 50mm F1.4, AF 85mm 1.4D ) with distance of 8m

  • Camera is fiexed on the tripod.

  • Every tests are confirmed by comparing 'contrast AF' in live-view mode.

  • My lenses are perfect in D700 and D3s.

Auto focus near center is really good.
Right side AF is slightly de-focused (not so serious).

All of these camera, however, show significant focusing error in case of left AFs.
3 left AF points result in further focal plane.

When I checked AF ability of my D800 'near' the target, I didn't notice these problem. I think this is really big problem.
Most of all, I found the same AF problem not only in D800(E) but also in D4.

Auto focus module for these new products seems to be not so accurate.
I am very disappointed with this test.

-- hide signature --

bachie

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Aamir Amjad
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Re: D4/ D800(E) - Left AF Problem
In reply to bachie, Apr 18, 2012

Today tested my D800 with the 85mm 1.4D and had excellent fucusing at all points center, left and right using single point AF-S mode and wide open ie F1.4 to F8. No issues at all - Serial # 8000xxx. However, had severe focus issues with the D7000 earlier which I returned so can imagine that QC is not ideal at Nikon.

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nikoj
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Re: D4/ D800(E) - Left AF Problem
In reply to Aamir Amjad, Apr 18, 2012

My D800 is serial #3001xxx, and it's having the left af sensor accuracy/sharpness problem. So far, I've tested it on 24 1.4g, 35 1.4g, 85 1.4g, and 24-70 2.8, and it shows consistent pattern of farthest left sensor to be worst, right farthest about the same as mid left sensor. The center is good. All my prime lenses mentioned have been fine tuned, and with ft off, the results are even worse. My lenses are accurate on my D700. I've had the camera for about three weeks now, and love the IQ. I've been vacillating between sending it in and see if it can be fixed, or wait to see if Nikon comes up with some sort of a fix on their own; however, the more I think about it, the more I feel like I should send it in.

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Red G8R
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My D4 - no problem
In reply to nikoj, Apr 18, 2012

I felt pressured to check my focal points because of this thread and I can confirm that that all my focal points are dead sharp.

I wasn't concerned because I've taken several hundred shots so far without any unsharp pics.

A week or so ago I also emailed Ming Thein about this since he was the first Pro to report on it while testing the D800 and he had no focus problems with a D4. My serial # 2011xxx.
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benjaminblack
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Re: Not here.
In reply to Dominique Dierick, Apr 18, 2012

Same here

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TOF guy
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Re: D4/ D800(E) - Left AF Problem
In reply to nikoj, Apr 19, 2012

nikoj wrote:

the more I think about it, the more I feel like I should send it in.

You must really like the camera to even consider not doing it! But you'll come to regret it later if you don't return it.
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nikoj
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Re: D4/ D800(E) - Left AF Problem
In reply to TOF guy, Apr 19, 2012

TOF guy wrote:

nikoj wrote:

the more I think about it, the more I feel like I should send it in.

You must really like the camera to even consider not doing it! But you'll come to regret it later if you don't return it.
--
Thierry

Yep, that's the thing, I really love the camera and don't want to be without it; my D700, as much as I love it, hasn't seen the light since I've gotten the D800. But you're right, I think if don't do anything, it will bug me big time later and the fact fact of knowing I am not getting all that I can out of the camera. I am coming around to think sooner the better at this point. I'll be taking some more test shots in the next couple of days and it'll be off for Melville with my test results included.

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ARB1
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Re: D4/ D800(E) - Left AF Problem
In reply to TOF guy, Apr 19, 2012

TOF guy wrote:

nikoj wrote:

the more I think about it, the more I feel like I should send it in.

You must really like the camera to even consider not doing it! But you'll come to regret it later if you don't return it.

I didn't want to but I returned my D800 to BestBuy after testing it and realizing that the left AF was way off and the right AF was soft. I hate that i had to do it because I really liked the camera but I'd rather wait a few months until Nikon gets it all worked out. I also didn't want to send a brand new $3K camera in for service.

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