Win a Pentax Limited Lens: Raffle Now Live!

Kennod · 05-09-2016, 11:36 PM

Having been used to the need for AF calibration for most lenses on K-5 and K-3, I had no reason not to expect the same with the K-1.

So far I've been generally happy with K-1 focus accuracy, out of the box, with most of my 'old' lenses (mostly FA & DA primes) so haven't felt the need to perform a thorough calibration.

But today my new 24-70/2.8 arrived and clearly needed adjustment. A +4 adjustment did the trick.

Just wondering which lenses you have needed to make AF adjustments for on the K-1?

noelpolar · 05-10-2016, 12:36 AM

I did this about the second day I had the K-1 (about 2hrs work for 8 or so lenses)...... all lenses needed some adjustment.... primes are pretty straight forward, but needed to consider my 150-450 and 70-200 uses to optimise the adjustment across the zoom range...... most in the -4 to +4 range...

Unregistered User · 05-10-2016, 12:41 AM

Originally posted by Kennod

Having been used to the need for AF calibration for most lenses on K-5 and K-3, I had no reason not to expect the same with the K-1.

So far I've been generally happy with K-1 focus accuracy, out of the box, with most of my 'old' lenses (mostly FA & DA primes) so haven't felt the need to perform a thorough calibration.

But today my new 24-70/2.8 arrived and clearly needed adjustment. A +4 adjustment did the trick.

Just wondering which lenses you have needed to make AF adjustments for on the K-1?

I started this thread on the 24-70... All other lenses are spot on.

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/317429-just...0-f-2-8-a.html

Zygonyx · 05-10-2016, 01:14 AM

Originally posted by Kennod

Having been used to the need for AF calibration for most lenses on K-5 and K-3, I had no reason not to expect the same with the K-1.

So far I've been generally happy with K-1 focus accuracy, out of the box, with most of my 'old' lenses (mostly FA & DA primes) so haven't felt the need to perform a thorough calibration.

But today my new 24-70/2.8 arrived and clearly needed adjustment. A +4 adjustment did the trick.

Just wondering which lenses you have needed to make AF adjustments for on the K-1?

For now, i have back-focus issues with :
- FA*300/2.8
- FA*85/1.4
- Tokina ATX pro 80-200/2.8
Not yet corrected, because other priorities.

**clackers** · 05-10-2016, 03:01 AM

Seems pointless. Your 24-70 may need no adjustment on my K-1.

**felixkh** · 05-10-2016, 04:01 AM

My FA Limiteds are spot on. No adjustments needed.

Kennod · 05-10-2016, 07:01 AM

Originally posted by clackers

Seems pointless. Your 24-70 may need no adjustment on my K-1.

I'm just curious whether the need for AF adjustment is as prevalent on the K-1 as on previous Pentax bodies. Perhaps it is pointless but I felt like asking. I wonder what is the point of responding to a question you find pointless

Unregistered User · 05-10-2016, 08:16 AM

I now tested the D FA24-70 f2.8 on the K-1 (Used it on the K-3 before) and there is no need for adjustment. For more info read the thread I linked to in my previous post.

sjyoon20904 · 05-10-2016, 08:29 AM

Limited trios dead on.
Dfa 70 200 is also dead on.
Dfa 15 30 on mine is at -2.
Dfa 24 70 is all over.
May be because last two lenses from tamron.

**clackers** · 05-10-2016, 06:47 PM

Originally posted by Kennod

I'm just curious whether the need for AF adjustment is as prevalent on the K-1 as on previous Pentax bodies. Perhaps it is pointless but I felt like asking. I wonder what is the point of responding to a question you find pointless

Well, not for my benefit, Kennod.

You might not understand that it's a sample variation issue of particular lenses and particular bodies. It's not an issue of a model's design, it's individual manufacturing tolerances.

If you tell us that you did a +4 on your 24-70 that doesn't even imply we should do the same.

Can't think why you'd ask if you realised that.

**monochrome** · 05-10-2016, 06:57 PM

Originally posted by felixkh

My FA Limiteds are spot on. No adjustments needed.

Same. And the 43 and 31 are old. Only the 77 is new.

05-09-2016, 11:36 PM	#1
Kennod Senior Member Join Date: May 2011 Location: Melbourne Posts: 126	What AF Fine Adjustments have you needed on K-1? Having been used to the need for AF calibration for most lenses on K-5 and K-3, I had no reason not to expect the same with the K-1. So far I've been generally happy with K-1 focus accuracy, out of the box, with most of my 'old' lenses (mostly FA & DA primes) so haven't felt the need to perform a thorough calibration. But today my new 24-70/2.8 arrived and clearly needed adjustment. A +4 adjustment did the trick. Just wondering which lenses you have needed to make AF adjustments for on the K-1?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
What was your first lens on the K-1 and what did you photograph with it?	pathdoc	Pentax K-1 & K-1 II	45	07-26-2016 05:54 AM
Consistency of autofocus fine adjustments	Lititz	Pentax DSLR Discussion	7	04-16-2016 08:43 AM
K-1: On-demand body lighting helps you see what you're doing	grahame	Pentax K-1 & K-1 II	26	02-18-2016 10:31 PM
AF Fine Tune inconsistent on the Pentax AF 50mm f/1.4 for you too?	m8o	Pentax SLR Lens Discussion	6	11-22-2010 09:25 AM
Have you found that K-7 Firmware 1.1 Improved AF Noticeably?	Christopher M.W.T	Pentax DSLR Discussion	18	08-08-2010 07:25 AM

05-10-2016, 12:36 AM	#2
noelpolar Veteran Member Join Date: Oct 2013 Location: Goolwa, SA Photos: Gallery Posts: 4,310	I did this about the second day I had the K-1 (about 2hrs work for 8 or so lenses)...... all lenses needed some adjustment.... primes are pretty straight forward, but needed to consider my 150-450 and 70-200 uses to optimise the adjustment across the zoom range...... most in the -4 to +4 range...

05-10-2016, 12:41 AM	#3
Unregistered User Guest	Originally posted by Kennod Having been used to the need for AF calibration for most lenses on K-5 and K-3, I had no reason not to expect the same with the K-1. So far I've been generally happy with K-1 focus accuracy, out of the box, with most of my 'old' lenses (mostly FA & DA primes) so haven't felt the need to perform a thorough calibration. But today my new 24-70/2.8 arrived and clearly needed adjustment. A +4 adjustment did the trick. Just wondering which lenses you have needed to make AF adjustments for on the K-1? I started this thread on the 24-70... All other lenses are spot on. https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/317429-just...0-f-2-8-a.html

05-10-2016, 01:14 AM	#4
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	Originally posted by Kennod Having been used to the need for AF calibration for most lenses on K-5 and K-3, I had no reason not to expect the same with the K-1. So far I've been generally happy with K-1 focus accuracy, out of the box, with most of my 'old' lenses (mostly FA & DA primes) so haven't felt the need to perform a thorough calibration. But today my new 24-70/2.8 arrived and clearly needed adjustment. A +4 adjustment did the trick. Just wondering which lenses you have needed to make AF adjustments for on the K-1? For now, i have back-focus issues with : - FA300/2.8 - FA85/1.4 - Tokina ATX pro 80-200/2.8 Not yet corrected, because other priorities.

05-10-2016, 03:01 AM	#5
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Seems pointless. Your 24-70 may need no adjustment on my K-1.

05-10-2016, 04:01 AM	#6
felixkh Site Supporter Join Date: Nov 2008 Location: Singapore Photos: Gallery Posts: 1,201	My FA Limiteds are spot on. No adjustments needed.

05-10-2016, 07:01 AM	#7
Kennod Senior Member Join Date: May 2011 Location: Melbourne Posts: 126 Original Poster	Originally posted by clackers Seems pointless. Your 24-70 may need no adjustment on my K-1. I'm just curious whether the need for AF adjustment is as prevalent on the K-1 as on previous Pentax bodies. Perhaps it is pointless but I felt like asking. I wonder what is the point of responding to a question you find pointless

05-10-2016, 08:16 AM	#8
Unregistered User Guest	I now tested the D FA24-70 f2.8 on the K-1 (Used it on the K-3 before) and there is no need for adjustment. For more info read the thread I linked to in my previous post.

05-10-2016, 08:29 AM	#9
sjyoon20904 Junior Member Join Date: Dec 2014 Photos: Albums Posts: 28	Limited trios dead on. Dfa 70 200 is also dead on. Dfa 15 30 on mine is at -2. Dfa 24 70 is all over. May be because last two lenses from tamron.

05-10-2016, 06:47 PM	#10
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Originally posted by Kennod I'm just curious whether the need for AF adjustment is as prevalent on the K-1 as on previous Pentax bodies. Perhaps it is pointless but I felt like asking. I wonder what is the point of responding to a question you find pointless Well, not for my benefit, Kennod. You might not understand that it's a sample variation issue of particular lenses and particular bodies. It's not an issue of a model's design, it's individual manufacturing tolerances. If you tell us that you did a +4 on your 24-70 that doesn't even imply we should do the same. Can't think why you'd ask if you realised that.

05-10-2016, 06:57 PM	#11
monochrome Loyal Site Supporter Join Date: Mar 2008 Location: Working From Home Photos: Gallery \| Albums Posts: 26,276	Originally posted by felixkh My FA Limiteds are spot on. No adjustments needed. Same. And the 43 and 31 are old. Only the 77 is new.

What AF Fine Adjustments have you needed on K-1?

Win a Pentax Limited Lens: Raffle Now Live!