Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-14-2012, 10:12 AM   #1
Site Supporter




Join Date: Nov 2012
Photos: Gallery
Posts: 166
-10 Fine adjustment not enough.

Is there a way to adjust K30/lens beyond the -10/+10? (I need about -14 for a Tammy) Thanks!

11-14-2012, 11:17 AM   #2
Pentaxian
cali92rs's Avatar

Join Date: May 2011
Location: Long Beach, CA
Posts: 3,346
QuoteOriginally posted by Kevwaly Quote
Is there a way to adjust K30/lens beyond the -10/+10? (I need about -14 for a Tammy) Thanks!
Are you positive that your testing technique is fine or that your lens is not broken?
That is a lot of adjustment.
11-14-2012, 12:18 PM   #3
Site Supporter




Join Date: Nov 2012
Photos: Gallery
Posts: 166
Original Poster
Yes, believe testing is true. New lens - (Tamron 28-75). All other lenses needed small adjustment, this one lens was much sharper at -10 but still front focusing a bit. I may have to send it back for new one.
11-14-2012, 12:25 PM   #4
Pentaxian
audiobomber's Avatar

Join Date: May 2008
Location: Sudbury, Ontario
Photos: Albums
Posts: 6,684
If it's a new lens, send it back. I've done that with the last three lenses I bought, and it's worked out well for me in each case. Two of these were within the camera's range to compensate, but why put up with a miscalibrated lens? Get it fixed under warranty, that's my strategy.

11-15-2012, 04:58 AM   #5
Forum Member




Join Date: Oct 2012
Posts: 50
New in the pentax world, and owner of a k-30 and a 55mm da* 1.4.

How can I tell it the lens is well calibrated or if it needs adjustmment??

Thanks

Zorza
11-15-2012, 05:47 AM   #6
Pentaxian
audiobomber's Avatar

Join Date: May 2008
Location: Sudbury, Ontario
Photos: Albums
Posts: 6,684
I use this chart: Nikon D70 Focus Chart
11-15-2012, 03:19 PM   #7
Veteran Member
FruitLooPs's Avatar

Join Date: Dec 2007
Location: New Zealand
Photos: Gallery | Albums
Posts: 434
Also these ones:

http://www.k10dbook.com/newchart.pdf

PENTAX DSLRs: Front or Back Focusing Problems? Free test (Lens Alignment) charts for Pentax, Nikon, Canon, Sony, Olympus.

I had a tamron 17-50mm F2.8 that needed way more than the K-30 could adjust, had to send it in for adjustment as it was secondhand. Still not right sadly, but much better.
11-16-2012, 09:15 AM   #8
New Member




Join Date: Nov 2012
Posts: 16
you have the same problem as me: (its NOT the lens)
see thread the damndest thing at 5.6

11-16-2012, 10:33 AM   #9
Site Supporter




Join Date: Nov 2012
Photos: Gallery
Posts: 166
Original Poster
Hmmmmmmm. Thanks for the input. I read the whole thread.
11-16-2012, 11:01 AM   #10
New Member




Join Date: Nov 2012
Posts: 16
kevwaly, is AF fine up to aperture 5.0?
11-16-2012, 12:52 PM   #11
Site Supporter




Join Date: Nov 2012
Photos: Gallery
Posts: 166
Original Poster
Will do more testing tomorrow and get back to you. (Working til late.) Will check AF throughout apertures on both Tamron 28-75 and Pentax 55-300.
11-16-2012, 04:35 PM   #12
New Member




Join Date: Nov 2012
Posts: 16
Re: AF problems Tamron 17-50: Pentax SLR Talk Forum: Digital Photography Review
11-17-2012, 08:36 AM   #13
Veteran Member




Join Date: May 2012
Posts: 698
I've just done some experiments and maybe I figured out what could be going on.

I've just made a post on DPreview which might be of interest.

Re: AF problems Tamron 17-50: Pentax SLR Talk Forum: Digital Photography Review

To cut the story short I have a Tamron 10-24 which behaves similar to what is described but I have determined that it is actually working properly. In other words the apparent weird behaviour is actually correct and most importantly results in correctly focused images.

Of course I've no idea whether that is also the case for the 18-50 as I don;t have one of those.
11-17-2012, 11:09 AM   #14
New Member




Join Date: Nov 2012
Posts: 16
how can the image be correctly focused if it is out of focus?
you kinda lost me there...
11-17-2012, 05:27 PM   #15
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 10,837
QuoteOriginally posted by mckracken Quote
you have the same problem as me: (its NOT the lens)
All the posts about the 17-50 that you link to on DPR (and the rest of the links all over Google for Tamron AF issues for Canon, Nikon etc bodies) suggest that is indeed the lens, not the camera.
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!
k-30, k-50, pentax k30, pentax k50
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
AF Fine adjustment OrchidJulie Pentax K-r 23 11-05-2012 03:47 PM
AF fine adjustment marinb Pentax K-5 15 02-19-2012 09:41 PM
AF Fine Adjustment, focus correction, AF micro adj., AF fine tuning annajonna Pentax K-5 13 11-19-2011 11:32 PM
AF Fine Adjustment phoenixrose Troubleshooting and Beginner Help 2 07-30-2011 08:05 AM
AF adjustment not enough?? ueda_masaki Pentax K-5 11 12-08-2010 05:33 PM



All times are GMT -7. The time now is 01:12 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