Severe Back focus with Nikon D7000

They do look like you missed focus.. but you ought to do a proper focus test inside with controlled variables. You say you have, so these may just be the result of missed focus, and not a back/front focus issue.

Best,
Jake
 
They do look like you missed focus.. but you ought to do a proper focus test inside with controlled variables. You say you have, so these may just be the result of missed focus, and not a back/front focus issue.

Best,
Jake

I don't know how to post these pics with Focus points but believe me , it's dead on Front Bird's head. It was same for both the shots. So I am not sure if it's a missed focus

I will be posting more of Pics soon. Any pointers how I can post them with Focus points and Exif data ?
 
Using AF fine tune with a zoom lens doesn't seem smart, UNLESS it's having the same focus issue throuought the entire range. The two picutres you posted aren't conclusive.

I suggest you setup a real test of sorts: Shoot a measuring tape extended in front of you, at the widest aperture you can, focusing at a particular spot on the tape, from the same spot at various focal lengths.

D/L the images and see how far from your focus point you really focusing.

also test focusing through teh viewfinder vs. the real view to see if the mirror doesn't need adjusting.
 
I assume either this is a cry for help or a cry that your camera isnt working properly.

If you are looking for advice then I had a D7K and my camera had back focusing problems.

First I tried all my lenses to see if the problem happened with only one lens.
After I saw it was with all lenses I double checked to be sure it wasnt an operator issue so I shot at home with ahshallow DOF on a tripod and again confirmed it wasnt an operator issue.
Then I took it to Nikon to get it serviced which helped and the back focusing was better but never 100% sesolved.
So I decided to try and Fine Tune all my lenses, that helped some more but again not 100%
I got to the point where it was either get used to soft pictures or get rid of camera.

Long story shot I am today the happy owner of a Nikon D7100 with NO back focusing problems.

Hope you will have more luck then me!!!
 
This is what i used to find out my D7000 had an issue...

FocusTune

However, my D7000 developed its focus issue late in its life. I think mine was due to heavy use and abuse not a 'flaw'. A quick trip to a 3rd party Nikon repair shop for cleaning & adjusting and it was back to orig-speck. (then i sold it! :) )
 
Using AF fine tune with a zoom lens doesn't seem smart, UNLESS it's having the same focus issue throuought the entire range. The two picutres you posted aren't conclusive.

I suggest you setup a real test of sorts: Shoot a measuring tape extended in front of you, at the widest aperture you can, focusing at a particular spot on the tape, from the same spot at various focal lengths.

D/L the images and see how far from your focus point you really focusing.

also test focusing through teh viewfinder vs. the real view to see if the mirror doesn't need adjusting.

I had tried using Focus chart when I first bough the lens but I had tested at a distance of 25 ft, today the distance was more than 50 ft for the Birds.

How am I ever supposed to get a single AF tune reading for different distances, looks impossible to me :(
 
I assume either this is a cry for help or a cry that your camera isnt working properly.

If you are looking for advice then I had a D7K and my camera had back focusing problems.

First I tried all my lenses to see if the problem happened with only one lens.
After I saw it was with all lenses I double checked to be sure it wasnt an operator issue so I shot at home with ahshallow DOF on a tripod and again confirmed it wasnt an operator issue.
Then I took it to Nikon to get it serviced which helped and the back focusing was better but never 100% sesolved.
So I decided to try and Fine Tune all my lenses, that helped some more but again not 100%
I got to the point where it was either get used to soft pictures or get rid of camera.

Long story shot I am today the happy owner of a Nikon D7100 with NO back focusing problems.

Hope you will have more luck then me!!!

I am not sure if you are aware but I had started with Nikon D5100, moved to D7000 for better AF performance, upgraded many lenses on the way, went way over my budget as a Hobbyist and now I finally understand that I will have to make 1 more upgrade.

Is that how it goes ?
 
Front bird's head is a target that's scarcely larger than a GOLF BALL, at what? 30 meters or more? One thing you must keep in mind is that the AF brackets in the viewfinder are not LAZER rifle sights; the area that the AF bracket covers is often just a small amount offset from the spot the AF system is actually using, so when a target is a small as a pigeon's head, and there is a strong line, like the top of the building's roofline within .0002 degrees angle of the "target", you could easily, easily be mislead. This article will explain some AF issues. Autofocus troubleshooting by Thom Hogan
 
How am I ever supposed to get a single AF tune reading for different distances, looks impossible to me :(

the distance never changes, i dont understand.

let's assume there's a tape measure in front of you right now. At every focal length you test, you'd focus at the same exact spot on the tape. Let's say the 5' mark.


If you want things at different distances to all be in focus, you need to learn more about DOF and the affects that aperture/distance has on it.
 
Front bird's head is a target that's scarcely larger than a GOLF BALL, at what? 30 meters or more? One thing you must keep in mind is that the AF brackets in the viewfinder are not LAZER rifle sights; the area that the AF bracket covers is often just a small amount offset from the spot the AF system is actually using, so when a target is a small as a pigeon's head, and there is a strong line, like the top of the building's roofline within .0002 degrees angle of the "target", you could easily, easily be mislead. This article will explain some AF issues. Autofocus troubleshooting by Thom Hogan

I agree that the AF point on viewfinder that I am seeing could be bigger than actual AF point on sensor. What should I do to find that REAL AF point ?
 
the distance never changes, i dont understand.

let's assume there's a tape measure in front of you right now. At every focal length you test, you'd focus at the same exact spot on the tape. Let's say the 5' mark.

If you want things at different distances to all be in focus, you need to learn more about DOF and the affects that aperture/distance has on it.

I think I didn't make myself clear enough. I did my AF tuning with Focus chart at 25 ft distance and it looked Fine to me but today the bird was 50 ft away and my AF tuning went erroneous.

This problem I have seen frequently with AF Fine tune, it looks ok at one specific distance but not so ok if your subject is much farther away.Has no one else observed it ?
 
BTW, did someone notice that Birds behind my actual subject seem much sharper
 

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