11-21-2011, 02:47 PM
[quote name='IanCD' timestamp='1321885993' post='13125']
Hi Wim,
I thought it was just the 12-24mm at first, as that was the lens I tested first, but I'm pretty sure it's all of them now (as per my [url="http://forum.photozone.de/index.php?/topic/1426-nikon-12-24mm-af-back-focus/page__pid__12759#entry12759"]previous post[/url]). I tested the 50mm and 85mm and got poor results at the intended focus plane unless I adjusted autofocus pretty much to the limits of fine-tuning. I say 'pretty much' because, frankly, I found it difficult to tell once I got to about -17, -18.
I phoned Nikon and one of the staff said it was far more likely to be the body in this scenario... plus, I did drop the camera in the summer so I wouldn't be surprised if something in the AF mechanism was knocked slightly out of alignment: I just hadn't noticed it before testing or had attributed out of focus shots to my technique... and I didn't know I was working with such shallow DoF before this post..!
Best wishes,
Ian
[/quote]
Yes, DoF often gets shallow very quickly, especially when working at distances involving people <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='' />. I do hope for you that it will not set you back a lot.
Kind regards, Wim
Hi Wim,
I thought it was just the 12-24mm at first, as that was the lens I tested first, but I'm pretty sure it's all of them now (as per my [url="http://forum.photozone.de/index.php?/topic/1426-nikon-12-24mm-af-back-focus/page__pid__12759#entry12759"]previous post[/url]). I tested the 50mm and 85mm and got poor results at the intended focus plane unless I adjusted autofocus pretty much to the limits of fine-tuning. I say 'pretty much' because, frankly, I found it difficult to tell once I got to about -17, -18.
I phoned Nikon and one of the staff said it was far more likely to be the body in this scenario... plus, I did drop the camera in the summer so I wouldn't be surprised if something in the AF mechanism was knocked slightly out of alignment: I just hadn't noticed it before testing or had attributed out of focus shots to my technique... and I didn't know I was working with such shallow DoF before this post..!
Best wishes,
Ian
[/quote]
Yes, DoF often gets shallow very quickly, especially when working at distances involving people <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='' />. I do hope for you that it will not set you back a lot.
Kind regards, Wim
Gear: Canon EOS R with 3 primes and 2 zooms, 4 EF-R adapters, Canon EOS 5 (analog), 9 Canon EF primes, a lone Canon EF zoom, 2 extenders, 2 converters, tubes; Olympus OM-D 1 Mk II & Pen F with 12 primes, 6 zooms, and 3 Metabones EF-MFT adapters ....