neildon Loc: Morro Bay, CA

I have noticed some back/front focusing issues with some of my D800/Lens Combinations.

In the process of fine tuning my lenses to the D800, I am having a curious issue.

I started with the Sigma 12-24 DG with no problems. When I next sought to test and adjust my Sigma 70-200 f2.8, in the AF Fine Tune settings the camera recognized it as the first 12-24 lens with the settings I made for the 12-24. This also happens with the 300 f2.8.

If I delete the 12-24 lens in the Delete Saved Values Dialogue and then put on the 70-200 f2.8, the camera recognizes it correctly.

After adjusting the settings for one Sigma lens, each Sigma lens added after is recognized as the first lens with the settings for that lens. This doesn't happen with the Tamron lenses that I own.

I have the current firmware installed and these are all CPU Lenses. The metadata accurately reflects the lens used to capture an image..

Has anyone else run across this issue?

Thanks

Utah Native Loc: Utah

Nikon used to be the standard of quality all around. i have 5 nikons and the newer they get the more problems i find. Nikon like all of the other manufactures out there that are fighting competition have figured out it is easier to get the product out on the market and fix the problems later if anyone picks up on them. the competition is tough and the cameras are so computerized any more that a slight change in programming makes it a while new outfit.
I have heard of this problem from someone else in the hog but i dont recall who or when.

hangman45 Loc: Hueytown Alabama

This is not a Nikon problem it is a Sigma problem it is not Nikon's job to make sure 3rd party accessories work properly it is the responsibility of the 3rd party manufacture we have the same problem with Sigma on Pentax.

MT Shooter Loc: Montana

Absolutely!!!

gfinlayson

It's a common problem with 3rd party lenses on AF fine tune. The body will only store the data for one lens at a time from each third party manufacturer.

It's not really Nikon's issue, though - it's up to the third parties to make their lenses compatible with Nikon bodies.

neildon Loc: Morro Bay, CA

While this may be true, I find it curious that the camera has no problem knowing the type of lens being used and passing that onto the EXIF file. Since the camera recognizes the lens, the lens must be sending the correct info to the camera. I have used Nikon bodies and equipment for a very long time with no regrets but it seems that they "might" have built this bug into the system to encourage use of Nikon lenses. Or do they assume that only photographers using their very good but very expensive glass would have a desire to take advantage of the AF fine-tune feature?

On another related note, i find it odd that I only have back/front focusing issues with these lenses on the D800. I used them without problems on my N80, F100, F5, D300s, D3s and D700 bodies with no back/front focus problems. I would say it is just the higher resolution of the D800 magnifying the problem, but one would think an issue like this would have been evident on drum scanned film.

gfinlayson

The D7000 has oft been criticised for front/back focusing. It has roughly the same pixel density as the D800. Higher res cameras highlight any focusing issue, especially when viewed at getting on for 100% magnification.