DA 21mm + K20D

Stratario · 09-18-2008, 06:45 PM

I just posted this question on the other forum. I'm posting it here too because I need some answers quick. I want to make my decision and move on. Your input would be greatly appreciated:

" I've read here and there that DA 21mm mis-focuses on K10D. I'm wondering if the lens behaves the same on K20D. I'm thinking about getting it but am a little gun shy because of the reported problems with this lens. "

k100d · 09-18-2008, 09:23 PM

i believe Ben said he had all sorts of problems with his on the K10D however, on the K20D the problems seemed to be gone
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/22793-limited-21-k20d.html

this better be what you're looking at

https://www.pentaxforums.com/forums/photographers-marketplace/37086-da-21mm-limited-canada.html

legacyb4 · 10-01-2008, 10:55 PM

So the DA 21mm isn't a recommended lens for use on a K10D?

creampuff · 10-01-2008, 11:13 PM

The K10D has known back and front focusing issues with some lenses, particularly wide angles. The DA 21mm is one of those lenses.

The K10D's AF can be calibrated to adjust focus with up to 4 lenses but you'll need an authorised Pentax service centre to do the adjustments. When adjusted, the K10D will focus correctly whenever that particular lens is mounted.

On my K20D, the DA 21mm is perfect without any AF adjustments.

frank · 10-01-2008, 11:19 PM

I posted a comparison testing report at the DPR over half a year ago:

K20D AF Accuracy Improvement Over K10D/K100D : Pentax SLR Talk Forum: Digital Photography Review

You can see the same DA21 lens focuses a lot better on K20D than it does on a K10D. From all of what I've seen and read, you are pretty safe if you plan to use the lens on K20D

soccerjoe5 · 10-02-2008, 01:58 AM

A pro i know that uses pentax told me how the AF-related issues and inconsistencies with his lenses disappeared with his K20, K200 and K-2000/K-m, basically all the bodies after the K10 and K110.

davef · 10-02-2008, 05:12 AM

I have this combination and have neve had any focus issues with it. Dave

legacyb4 · 10-02-2008, 06:25 AM

So how would that work? You send them your Camera and the lens you want to have it syncing with?

Any idea what lenses *don't* work out of the box? Guess it's time to fire up Google again...

Originally posted by creampuff

The K10D has known back and front focusing issues with some lenses, particularly wide angles. The DA 21mm is one of those lenses.

The K10D's AF can be calibrated to adjust focus with up to 4 lenses but you'll need an authorised Pentax service centre to do the adjustments. When adjusted, the K10D will focus correctly whenever that particular lens is mounted.

Old Timer 56 · 10-02-2008, 09:32 AM

Originally posted by legacyb4

So how would that work? You send them your Camera and the lens you want to have it syncing with?....

I had a significant back-focus problem with the 21mm on my K10D body. I sent both camera and lens to Pentax with an explanation of what the problem was. They fixed it and it works fine now.

By the way, both camera and lens were still under warranty so there was no charge.

Richard

offertonhatter · 10-02-2008, 01:54 PM

Originally posted by Stratario

" I've read here and there that DA 21mm mis-focuses on K10D. I'm wondering if the lens behaves the same on K20D. I'm thinking about getting it but am a little gun shy because of the reported problems with this lens. "

Funny you should say that, but my K10D is intermittant with some of my lenses, it seems that it is a common problem. Also, it is very hit or miss with my Manual lenses too (more miss than hit) whereas my DS is spot on every time.

I do love my K10D, and with some lenses it is fine (FA50mm F1.4 and 50-135DA*) but the Sigma 24-70mm F2.8 is my AF which is hit and miss, and my main lens on the camera.

Looks like I will have to get the K20D sooner rather than later, and have the K10D as prime backup (DS as secondary)

Thanks for this, I thought it was me that was the problem. obviously not.

jsherman999 · 10-02-2008, 07:38 PM

Just find an M 20 f/4 and you won't have to worry about FF/BF at all!

TKH · 10-12-2008, 01:39 PM

K20D and DA21 is a dreamteam for me!

Best,
Rainer

09-18-2008, 06:45 PM	#1
Stratario Veteran Member Join Date: Mar 2008 Location: Ontario, Canada Photos: Gallery Posts: 366	DA 21mm + K20D I just posted this question on the other forum. I'm posting it here too because I need some answers quick. I want to make my decision and move on. Your input would be greatly appreciated: " I've read here and there that DA 21mm mis-focuses on K10D. I'm wondering if the lens behaves the same on K20D. I'm thinking about getting it but am a little gun shy because of the reported problems with this lens. "

10-02-2008, 07:38 PM	#11
jsherman999 Veteran Member Join Date: Dec 2007 Photos: Gallery Posts: 8,237	Just find an M 20 f/4 and you won't have to worry about FF/BF at all! Last edited by jsherman999; 10-02-2008 at 07:50 PM.

10-12-2008, 01:39 PM	#12
TKH Veteran Member Join Date: Aug 2007 Location: Germany Posts: 371	K20D and DA21 is a dreamteam for me! Best, Rainer Attached Images

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09-18-2008, 09:23 PM	#2
k100d Veteran Member Join Date: Feb 2008 Location: Toronto Posts: 3,911	i believe Ben said he had all sorts of problems with his on the K10D however, on the K20D the problems seemed to be gone https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/22793-limited-21-k20d.html this better be what you're looking at https://www.pentaxforums.com/forums/photographers-marketplace/37086-da-21mm-limited-canada.html

10-01-2008, 10:55 PM	#3
legacyb4 Inactive Account Join Date: Sep 2008 Location: Tri-Cities, British Columbia Photos: Gallery Posts: 1,784	So the DA 21mm isn't a recommended lens for use on a K10D?

10-01-2008, 11:13 PM	#4
creampuff Veteran Member Join Date: May 2007 Location: Singapore Photos: Gallery Posts: 3,953	The K10D has known back and front focusing issues with some lenses, particularly wide angles. The DA 21mm is one of those lenses. The K10D's AF can be calibrated to adjust focus with up to 4 lenses but you'll need an authorised Pentax service centre to do the adjustments. When adjusted, the K10D will focus correctly whenever that particular lens is mounted. On my K20D, the DA 21mm is perfect without any AF adjustments.

10-01-2008, 11:19 PM	#5
frank Veteran Member Join Date: Nov 2006 Location: Singapore Photos: Gallery Posts: 3,202	I posted a comparison testing report at the DPR over half a year ago: K20D AF Accuracy Improvement Over K10D/K100D : Pentax SLR Talk Forum: Digital Photography Review You can see the same DA21 lens focuses a lot better on K20D than it does on a K10D. From all of what I've seen and read, you are pretty safe if you plan to use the lens on K20D

10-02-2008, 01:58 AM	#6
soccerjoe5 Veteran Member Join Date: May 2008 Location: Philippines Photos: Gallery Posts: 1,343	A pro i know that uses pentax told me how the AF-related issues and inconsistencies with his lenses disappeared with his K20, K200 and K-2000/K-m, basically all the bodies after the K10 and K110.

10-02-2008, 05:12 AM	#7
davef Veteran Member Join Date: Feb 2007 Location: Ontario Posts: 433	I have this combination and have neve had any focus issues with it. Dave

10-02-2008, 06:25 AM	#8
legacyb4 Inactive Account Join Date: Sep 2008 Location: Tri-Cities, British Columbia Photos: Gallery Posts: 1,784	So how would that work? You send them your Camera and the lens you want to have it syncing with? Any idea what lenses don't work out of the box? Guess it's time to fire up Google again... Originally posted by creampuff The K10D has known back and front focusing issues with some lenses, particularly wide angles. The DA 21mm is one of those lenses. The K10D's AF can be calibrated to adjust focus with up to 4 lenses but you'll need an authorised Pentax service centre to do the adjustments. When adjusted, the K10D will focus correctly whenever that particular lens is mounted.

10-02-2008, 09:32 AM	#9
Old Timer 56 Senior Member Join Date: Mar 2007 Location: New York Posts: 168	Originally posted by legacyb4 So how would that work? You send them your Camera and the lens you want to have it syncing with?.... I had a significant back-focus problem with the 21mm on my K10D body. I sent both camera and lens to Pentax with an explanation of what the problem was. They fixed it and it works fine now. By the way, both camera and lens were still under warranty so there was no charge. Richard

10-02-2008, 01:54 PM	#10
offertonhatter Veteran Member Join Date: Jul 2007 Location: North West UK Posts: 390	Originally posted by Stratario " I've read here and there that DA 21mm mis-focuses on K10D. I'm wondering if the lens behaves the same on K20D. I'm thinking about getting it but am a little gun shy because of the reported problems with this lens. " Funny you should say that, but my K10D is intermittant with some of my lenses, it seems that it is a common problem. Also, it is very hit or miss with my Manual lenses too (more miss than hit) whereas my DS is spot on every time. I do love my K10D, and with some lenses it is fine (FA50mm F1.4 and 50-135DA*) but the Sigma 24-70mm F2.8 is my AF which is hit and miss, and my main lens on the camera. Looks like I will have to get the K20D sooner rather than later, and have the K10D as prime backup (DS as secondary) Thanks for this, I thought it was me that was the problem. obviously not.