Focus inaccurracy - Part II

Flugelbinder · 01-05-2015, 04:11 PM - **2 Likes**

Just want to say that all my other threads, regarding the 'issue', were all based on a lemon of a lens. Everything was fantastic with the 55-300 (despite a +1 adjustment), and, I just got the 50/1.8, ran a few (very) low-light tests, and it focused on my baby girl's eye - at 1.8 - every single time (with a -1 adjustment).
So, again, I apologize for the somewhat harsh word I wrote about the focus ability of the K-5 II - although they may have been a frustrated response to the "user error" posts - they should not have happened, and it is not the way I usually behave. It was only a response from a very frustrated newcomer (to a brand and to a forum)...

All the best.

Paul

**jatrax** · 01-05-2015, 04:29 PM

Glad you got it sorted out. Frustrating start to Pentax, I'm sure.

Flugelbinder · 01-05-2015, 04:39 PM

Originally posted by jatrax

Glad you got it sorted out. Frustrating start to Pentax, I'm sure.

Thank you. It really was, but now I'm sure we will make good things (images) together...

VisualDarkness · 01-05-2015, 04:46 PM

Frustration can really bring out the worst in you, most of us have been there too, Glad that it's solved!

faaguinaga · 03-16-2015, 09:30 AM

How I may enhance AF at nite condition with my K-5 using DA50/1.8 & DA18-135 lens? Please give any help. thanks

FreeSpirit9 · 03-16-2015, 09:55 AM

Originally posted by faaguinaga

How I may enhance AF at nite condition with my K-5 using DA50/1.8 & DA18-135 lens? Please give any help. thanks

Hold really still when taking the photo

.

It works for me.

Also high ISO.

Flash when required.

Use a good tripod, mirror lock up and remote trigger for those long exposures.

Hope this helps.

Cheers.

---------- Post added 03-17-15 at 02:58 AM ----------

Originally posted by Flugelbinder

Just want to say that all my other threads, regarding the 'issue', were all based on a lemon of a lens. Everything was fantastic with the 55-300 (despite a +1 adjustment), and, I just got the 50/1.8, ran a few (very) low-light tests, and it focused on my baby girl's eye - at 1.8 - every single time (with a -1 adjustment).
So, again, I apologize for the somewhat harsh word I wrote about the focus ability of the K-5 II - although they may have been a frustrated response to the "user error" posts - they should not have happened, and it is not the way I usually behave. It was only a response from a very frustrated newcomer (to a brand and to a forum)...

All the best.

Paul

I too had issues with a couple of "dud" lenses. Had them replaced, one replaced twice. With the frustration gone I was a very happy person indeed, and now I have superb copies of the 18-135 (original problem: issues with locking focus) and the 55-300 (original problem: front focus that I could not work with).

**UncleVanya** · 03-16-2015, 11:31 AM

Focus assist light should be enabled if your subjects don't mind the weird green light.

**TER-OR** · 03-16-2015, 12:38 PM

I just had to dial in +4 on my 55-300WR. I finally got the chance (and remembered to do it) this weekend. Seems spot-on now.

kadajawi · 04-19-2015, 09:06 AM

Originally posted by faaguinaga

How I may enhance AF at nite condition with my K-5 using DA50/1.8 & DA18-135 lens? Please give any help. thanks

Aim at something with contrast. Realize how the sensor is a cross type sensor. IIRC it is a + and not a x, right? So you can turn the camera (before focusing) so that the AF sensor crosses the sharp/contrasty point at a 90° angle. You can try it with one of the outmost AF sensors, they are only going in one way, i.e. I. So when you try to focus on a line, and the focus point is going in the same direction as the line, your camera will fail. Turn it, and it will start to catch on. If the line and the sensor form a + then it should focus the fastest and best. With cross type sensors it should be easier to not get it wrong, but you can still assist the AF sensor.

Prakticant · 04-19-2015, 10:34 AM

Pls remember focus assist light operates only in AF-S mode (does not operate in AF-C)

.

01-05-2015, 04:11 PM - 2 Likes	#1
Flugelbinder Veteran Member Join Date: Nov 2014 Location: Toronto - missing the ocean Posts: 466	Focus inaccurracy - Part II Just want to say that all my other threads, regarding the 'issue', were all based on a lemon of a lens. Everything was fantastic with the 55-300 (despite a +1 adjustment), and, I just got the 50/1.8, ran a few (very) low-light tests, and it focused on my baby girl's eye - at 1.8 - every single time (with a -1 adjustment). So, again, I apologize for the somewhat harsh word I wrote about the focus ability of the K-5 II - although they may have been a frustrated response to the "user error" posts - they should not have happened, and it is not the way I usually behave. It was only a response from a very frustrated newcomer (to a brand and to a forum)... All the best. Paul

03-16-2015, 09:55 AM	#6
FreeSpirit9 Veteran Member Join Date: Aug 2013 Location: Queensland, Australia Photos: Gallery Posts: 557	Originally posted by faaguinaga How I may enhance AF at nite condition with my K-5 using DA50/1.8 & DA18-135 lens? Please give any help. thanks Hold really still when taking the photo. It works for me. Also high ISO. Flash when required. Use a good tripod, mirror lock up and remote trigger for those long exposures. Hope this helps. Cheers. ---------- Post added 03-17-15 at 02:58 AM ---------- Originally posted by Flugelbinder Just want to say that all my other threads, regarding the 'issue', were all based on a lemon of a lens. Everything was fantastic with the 55-300 (despite a +1 adjustment), and, I just got the 50/1.8, ran a few (very) low-light tests, and it focused on my baby girl's eye - at 1.8 - every single time (with a -1 adjustment). So, again, I apologize for the somewhat harsh word I wrote about the focus ability of the K-5 II - although they may have been a frustrated response to the "user error" posts - they should not have happened, and it is not the way I usually behave. It was only a response from a very frustrated newcomer (to a brand and to a forum)... All the best. Paul I too had issues with a couple of "dud" lenses. Had them replaced, one replaced twice. With the frustration gone I was a very happy person indeed, and now I have superb copies of the 18-135 (original problem: issues with locking focus) and the 55-300 (original problem: front focus that I could not work with). Last edited by FreeSpirit9; 03-16-2015 at 10:08 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Focus inconsistency/accuracy - Part II	Flugelbinder	Troubleshooting and Beginner Help	9	12-19-2014 01:51 PM
Not Work-Safe Ivy - Part II	Bud	Post Your Photos!	2	07-01-2014 04:42 AM
Travel Metropolis (Petra, Jordan / Part II)	causey	Post Your Photos!	8	01-01-2014 08:58 AM
Abstract Hydrangeas: Part II	treebeard	Post Your Photos!	2	06-28-2013 07:07 AM
Travel Mystery Island part II	Bruce Clark	Post Your Photos!	3	03-24-2013 06:30 AM

01-05-2015, 04:29 PM	#2
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Glad you got it sorted out. Frustrating start to Pentax, I'm sure.

01-05-2015, 04:39 PM	#3
Flugelbinder Veteran Member Join Date: Nov 2014 Location: Toronto - missing the ocean Posts: 466 Original Poster	Originally posted by jatrax Glad you got it sorted out. Frustrating start to Pentax, I'm sure. Thank you. It really was, but now I'm sure we will make good things (images) together...

01-05-2015, 04:46 PM	#4
VisualDarkness Veteran Member Join Date: Nov 2011 Location: Uppsala, Sweden Photos: Gallery Posts: 4,439	Frustration can really bring out the worst in you, most of us have been there too, Glad that it's solved!

03-16-2015, 09:30 AM	#5
faaguinaga New Member Join Date: Jun 2014 Posts: 3	How I may enhance AF at nite condition with my K-5 using DA50/1.8 & DA18-135 lens? Please give any help. thanks

03-16-2015, 11:31 AM	#7
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,407	Focus assist light should be enabled if your subjects don't mind the weird green light.

03-16-2015, 12:38 PM	#8
TER-OR Site Supporter Join Date: Apr 2009 Location: Dundee, IL Photos: Gallery \| Albums Posts: 6,699	I just had to dial in +4 on my 55-300WR. I finally got the chance (and remembered to do it) this weekend. Seems spot-on now.

04-19-2015, 09:06 AM	#9
kadajawi Veteran Member Join Date: Sep 2010 Posts: 2,799	Originally posted by faaguinaga How I may enhance AF at nite condition with my K-5 using DA50/1.8 & DA18-135 lens? Please give any help. thanks Aim at something with contrast. Realize how the sensor is a cross type sensor. IIRC it is a + and not a x, right? So you can turn the camera (before focusing) so that the AF sensor crosses the sharp/contrasty point at a 90° angle. You can try it with one of the outmost AF sensors, they are only going in one way, i.e. I. So when you try to focus on a line, and the focus point is going in the same direction as the line, your camera will fail. Turn it, and it will start to catch on. If the line and the sensor form a + then it should focus the fastest and best. With cross type sensors it should be easier to not get it wrong, but you can still assist the AF sensor.

04-19-2015, 10:34 AM	#10
Prakticant Senior Member Join Date: Jul 2010 Posts: 274	Pls remember focus assist light operates only in AF-S mode (does not operate in AF-C) .