Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-02-2010, 10:35 AM   #1
Forum Member




Join Date: Jan 2009
Location: Salisnury, Canada
Posts: 68
Selective AF adjustment on KX

The autofocus adjustment on KX is generally known procedure, and I have it done myself with fairly radical setting of -150 to eliminate strong front focusing and it works now equally good with all my lenses.

However, I just went through phone/email communications with Pentax because of faulty DA 10-17mm lens. They seem to be suggesting that that the KX can be selectively adjusted for up to 20 different lenses - here is a quote from their last email:
"The K-x can do AF shift adjustment up to 20 lenses by our service department."

Does anyone know about selectively adjusting the AF to a different values for different lenses?

Cheers,

06-02-2010, 10:46 AM   #2
Veteran Member
sterretje's Avatar

Join Date: Dec 2008
Location: Roodepoort, South Africa
Photos: Gallery | Albums
Posts: 3,534
If it's the same as a K10D, it can be done for multiple lenses by a service center. Can't tell you for how many but there is no reason not to believe what Penatx says regarding this.

PS:
K10D is limited to a few
06-02-2010, 10:47 AM   #3
Veteran Member
Eruditass's Avatar

Join Date: Jul 2009
Location: Pittsburgh, PA
Photos: Gallery | Albums
Posts: 2,206
Sounds like a tech-support blooper. Here is a similar blooper:

QuoteQuote:
Yes it does.

Your Email:
Does the K-x have a custom function option to have e-dial with the +/- button change the ISO instead of the EV
compensation?
edit: I have not heard about the the service center part, that's kind of exciting, maybe I should help out with the firmware hacking.
06-02-2010, 11:04 AM   #4
Forum Member




Join Date: Jan 2009
Location: Salisnury, Canada
Posts: 68
Original Poster
QuoteOriginally posted by sterretje Quote
If it's the same as a K10D, it can be done for multiple lenses by a service center. Can't tell you for how many but there is no reason not to believe what Penatx says regarding this.

PS:
K10D is limited to a few
Well, this fact can have a serious consequences. If each lens has different focusing characteristics/setting and you fine-tune the AF for one lens that might have a front focus, you will screw up the setting for another lens that might have a rear focus issue. One may be opening a can of worms with that AF adjustment!

06-02-2010, 11:06 AM   #5
Veteran Member
Eruditass's Avatar

Join Date: Jul 2009
Location: Pittsburgh, PA
Photos: Gallery | Albums
Posts: 2,206
I think he is saying there is a section in the memory that the service center has access to (not in the debug menu) where they can enter in more than one independent lens-specific adjustment.
06-02-2010, 01:58 PM   #6
Inactive Account




Join Date: Mar 2009
Location: Pennsylvania
Posts: 152
You need to enter the debug mode for k-x.

Debug menu in K-x: Pentax SLR Talk Forum: Digital Photography Review

I'm not sure how many lenses it can memorize.
06-02-2010, 04:09 PM   #7
Senior Member
GingerBeer's Avatar

Join Date: Oct 2009
Location: Brisbane
Posts: 124
AFAIK the AF adjustment in the debug menu applies a uniform adjustment for all lenses.

However, a Pentax Service Centre can make AF adjustments for individual lenses. I have no reason to doubt that the limit of unique settings is 20. My K-x is currently in at Pentax Australia with my FA 31mm to have a back focus issue corrected.
06-02-2010, 09:21 PM   #8
Veteran Member
sterretje's Avatar

Join Date: Dec 2008
Location: Roodepoort, South Africa
Photos: Gallery | Albums
Posts: 3,534
QuoteOriginally posted by luma Quote
Well, this fact can have a serious consequences. If each lens has different focusing characteristics/setting and you fine-tune the AF for one lens that might have a front focus, you will screw up the setting for another lens that might have a rear focus issue. One may be opening a can of worms with that AF adjustment!
As you quoted me, I'm missing your point. Debug menu allows for one generic adjustment and you're right if you were referring to that; service center has access to adjustment for a few.

QuoteOriginally posted by Eruditass Quote
I think he is saying there is a section in the memory that the service center has access to (not in the debug menu) where they can enter in more than one independent lens-specific adjustment.
Yep, thanks

06-05-2010, 07:03 AM   #9
Forum Member




Join Date: Jan 2009
Location: Salisnury, Canada
Posts: 68
Original Poster
Some follow up on the topic - please have a look at my another post.

https://www.pentaxforums.com/forums/camera-studio-accessories/103677-travor-f...een-aware.html
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!
adjustment, af, af adjustment, camera, dslr, kx, lenses, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
First tries in selective editing gawan Digital Processing, Software, and Printing 5 10-09-2008 02:49 AM
selective Coloring.. mtnbearhug Post Your Photos! 11 09-06-2008 10:06 AM
selective style... distorted_vision Post Your Photos! 0 05-24-2008 05:49 PM
Selective Color Techiechick Post Your Photos! 30 03-30-2008 06:37 AM
Selective Colouring! Bramela Post Your Photos! 14 02-07-2008 12:57 AM



All times are GMT -7. The time now is 09:41 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