[neal_grillot]

I have performed all the standard techniques, as I have with all cameras that have the AF Fine Adjustment, using the Spyder Cal tool.
My K-1ii clearly has a back focus issue across at least two lenses tried fo far: Pentax 28-105, and Sigma 105 2.8.. the only other lens I can test is the 50-135 in crop mode.

The BEST I can do is adjust to +10 and the focus at the -0- mark is still locked on the -1 mark.. so in the current state in order to achieve focus on the eye, I'd have to lock in on the bridge of the nose, or thereabouts. Not exactly ideal

If I send the camera into "repair" is there any flexibility in the camera to move the focus further forward so I can adjust the focus so it is achieved at -0- when the camera signals focus at the focus point I am shooting, and

I would expect this would be warranty work.

Thoughts

[pschlute]

Yes send the camera in for repair under warranty. This is what Pentax advise if you cannot achieve autofocus adjustment at the extremes +10/-10. Speak to them as it may be advisable to sent a lens too.

[steve_k]

If you just purchased it you can also see if you could exchange for another. Might be faster than warranty repair.

[neal_grillot]

If you just purchased it you can also see if you could exchange for another. Might be faster than warranty repair.

I think I'm past that limit. I'm almost 4 months in.

[rawr]

I have performed all the standard techniques, as I have with all cameras that have the AF Fine Adjustment, using the Spyder Cal tool.
My K-1ii clearly has a back focus issue across at least two lenses tried fo far: Pentax 28-105, and Sigma 105 2.8.. the only other lens I can test is the 50-135 in crop mode.

Before you send it in, perhaps verify your testing procedure the simple way against a flat test target like a newspaper. Kind of like how Pentax describe it here:

How to optimize focusing accuracy with large-aperture lenses / Beautiful Photo-life | RICOH IMAGING

But otherwise, send body and one of the offending lenses in for adjustment under warranty. It's the kind of thing DSLR makers have to do all the time.

[neal_grillot]

I am sending it into Precision for a warranty repair adjustment.
Back Focus is showing in all my lenses.

[alvaro_garcia]

I would try to replace your unit by a new one, rather than repairing yours.

---------- Post added 08-22-18 at 01:37 AM ----------

Front / back / inconsistent focus is what pushes me back sometimes about DSLRs. I do prefer watching through pentaprism rather than an electronic viewfinder, although I think the mirrorless cameras are the future. Not only they are much more focus consistent, they are certainly much more light efficient (a 2.8 lens on a DSLR might easily be equivalent to a 2.0 or even 1.4 on a mirrorless).

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Last edited by alvaro_garcia; 08-22-2018 at 01:39 AM.

[amstel78]

My first K1-II body had back focus issues across all of my lenses as well; all required +10 and I was still a hair off from achieving critical focus via AF. I ended up swapping the body out with another and the new one is spot on. All lenses require zero micro focus adjustments as confirmed with a focus calibration chart.

As you're 4 months in, the best option is to send it in as you've already stated.

[neal_grillot]

My first K1-II body had back focus issues across all of my lenses as well; all required +10 and I was still a hair off from achieving critical focus via AF. I ended up swapping the body out with another and the new one is spot on. All lenses require zero micro focus adjustments as confirmed with a focus calibration chart.

As you're 4 months in, the best option is to send it in as you've already stated.

That is good news. I am sure they can adjust it, it is just a bit of an inconvenience