Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-01-2013, 08:51 AM   #1
Site Supporter
shaolen's Avatar

Join Date: May 2012
Location: Phoenix AZ
Posts: 793
focus behind subject

Has anyone had an issue with the k-5 constantly focusing slightly behind the subject?

08-01-2013, 09:44 AM   #2
Veteran Member
VisualDarkness's Avatar

Join Date: Nov 2011
Location: Uppsala, Sweden
Photos: Gallery
Posts: 4,441
Have you tried focus adjustment?
08-01-2013, 12:43 PM   #3
Pentaxian
Na Horuk's Avatar

Join Date: Feb 2012
Location: Slovenia, probably
Photos: Gallery | Albums
Posts: 10,867
The reason for such misfocusing is that the lenses and cameras are made with certain tolerances - making them all perfectly aligned would be a lot of work and would send prices through the roof (think Leica). Usually people don't need adjustment, but in some cases the lens is on one extreme of the tolerance, and the camera on the other extreme. that means that both the camera and lens are within the manufacturer's standard, but together they arent quite perfect. That is why modern DSLRs have focus adjustment features (also called micro adjust, I think). You can check your camera manual for more info. Some cameras only have a global adjustment (that works for all lenses), but I think the K-5 is smart and can remember individual adjustments for a couple lenses, so you can adjust one and keep the others working as they should.

There are also a couple of threads about back/front-focusing and what to do about it, feel free to search the forums for it. You can also go online and find a focus chart (you can buy one, or print a free one yourself, I think there are link to some charts in those threads I mentioned earlier) and figure out how much adjustment you need.

On the other hand! It is possible that you are misfocusing for other reasons and its not at all a mechanical "fault". Keep in mind that the AF overlays in the viewfinder are actually much smaller than the actual AF points. (the centre point is as big as the ( ) cirlce)The AF point might decide that something is in focus, but its actually not the subject that you want. This can especially happen if there is a very contrasty area near the subject, like a rough well-lit background. In these cases you can try the "focus and recompose" technique or try manual focus. I find manual focusing in these cases can be the fastest solution. You can also check your critical focus in live view with digital zoom, if you have enough time.
08-01-2013, 02:03 PM   #4
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 10,843
QuoteOriginally posted by shaolen Quote
Has anyone had an issue with the k-5 constantly focusing slightly behind the subject?
No.

But your 'problem' definition is way too general. You need to specify what lens, what AF focus mode you are in (spot, 5/11 point etc), what lighting conditions, what sort of subject you are having difficulty shooting. Etc.

As a pic related, this is always useful. From the Nikon D4 user manual:



Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, dslr, k-5, k-5 ii, k-5 iis, k5, pentax k-5, subject
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Macro Left Behind jcamero Photo Critique 3 05-23-2012 12:02 AM
People Is Subject in Focus maverickh Post Your Photos! 3 03-20-2012 02:24 AM
Focus vs shutter sound subject furstration. ytterbium Photographic Technique 13 09-23-2010 04:10 AM
Focus lock on subject raider Pentax DSLR Discussion 5 10-09-2008 11:06 AM
Expose ONLY when subject comes into focus. ukbluetooth Pentax DSLR Discussion 6 11-12-2007 08:54 PM



All times are GMT -7. The time now is 05:24 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top