Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-16-2019, 08:39 PM   #1
New Member




Join Date: Jun 2019
Posts: 4
KP + DA* 16-50 lens create severe camera lag

I bought a KP to replace my K-30 with the solenoid issue a couple months ago. Everything had been working just fine until last week when i was on vacation. I had been using my DA* 16-50 lens and i started to hear what sounded like mechanical noises from the camera and lens combo. after a couple hours I developed severe lag where hitting a button on the back on the KP did not work 66% of the time and when it does work it takes several seconds to load a sub menu like changing the ISO. If i change to another lens my KP works fine. If I put the DA* 16-50 on my K-30 it works (except the solenoid issue now and then). i called tech support and they suggested to upgrade my firmware to 1.1 which i did and still no difference. Anyone hear of this before? i have had to repair the SDM on this lens once already but if it was failing wouldn't i notice problems on my K-30 as well?

I will call tech support again this week but when i called last week the phone routed me to printer support instead of cameras. I am in the US.

06-16-2019, 09:28 PM   #2
Site Supporter
Site Supporter
RobA_Oz's Avatar

Join Date: Nov 2008
Location: Tasmania, Australia
Photos: Gallery
Posts: 5,331
Hi soaptrail, and welcome to Pentax Forums.

I haven’t heard of this behaviour, before, but it doesn’t mean others haven’t.

You say that you’ve tried other lenses on the KP, but were any of them SDM lenses? If they were the older screw-drive lenses, then it sounds like a camera body problem (possibly the SDM power supply contacts?). If not, I can’t help any further.
06-17-2019, 04:52 AM   #3
New Member




Join Date: Jun 2019
Posts: 4
Original Poster
QuoteOriginally posted by RobA_Oz Quote
Hi soaptrail, and welcome to Pentax Forums.

I havenít heard of this behaviour, before, but it doesnít mean others havenít.

You say that youíve tried other lenses on the KP, but were any of them SDM lenses? If they were the older screw-drive lenses, then it sounds like a camera body problem (possibly the SDM power supply contacts?). If not, I canít help any further.
I only have the one SDM drive lens. That would probably confirm if the lens or the camera is the issue if i had a second SDM lens. It is weird because despite the lag, i can still use the camera albeit it is painful and the focus was having issues when i heard the noises right before the lag started.

I bet it is the lens now that you ask.
06-17-2019, 05:30 AM   #4
Pentaxian
rogerstg's Avatar

Join Date: Oct 2007
Location: Rhode Island
Photos: Albums
Posts: 465
I've had no problems with the two SDM lenses I have (DA* 16-50 and 50-135) on my KP. Maybe cleaning the lens contacts will help. Or maybe consider converting the lens to screw drive.

06-17-2019, 06:07 AM   #5
Pentaxian
aurele's Avatar

Join Date: Jan 2011
Location: Paris, France
Photos: Albums
Posts: 3,187
QuoteOriginally posted by soaptrail Quote
I bought a KP to replace my K-30 with the solenoid issue a couple months ago. Everything had been working just fine until last week when i was on vacation. I had been using my DA* 16-50 lens and i started to hear what sounded like mechanical noises from the camera and lens combo. after a couple hours I developed severe lag where hitting a button on the back on the KP did not work 66% of the time and when it does work it takes several seconds to load a sub menu like changing the ISO. If i change to another lens my KP works fine. If I put the DA* 16-50 on my K-30 it works (except the solenoid issue now and then). i called tech support and they suggested to upgrade my firmware to 1.1 which i did and still no difference. Anyone hear of this before? i have had to repair the SDM on this lens once already but if it was failing wouldn't i notice problems on my K-30 as well?

I will call tech support again this week but when i called last week the phone routed me to printer support instead of cameras. I am in the US.
Make sure that in-body correction for purple fringing, is not activated. Presse "Info" and have a look.

This can slow the camera quite a lot.
06-17-2019, 08:11 PM   #6
New Member




Join Date: Jun 2019
Posts: 4
Original Poster
QuoteOriginally posted by rogerstg Quote
I've had no problems with the two SDM lenses I have (DA* 16-50 and 50-135) on my KP. Maybe cleaning the lens contacts will help. Or maybe consider converting the lens to screw drive.
i used a cloth on the contacts, is that the correct way to clean them?
06-17-2019, 08:15 PM   #7
New Member




Join Date: Jun 2019
Posts: 4
Original Poster
QuoteOriginally posted by aurele Quote
Make sure that in-body correction for purple fringing, is not activated. Presse "Info" and have a look.

This can slow the camera quite a lot.
i checked and only the two noise reductions, the shadow correction and shake reduction are enabled. I tried switching to the electronic shutter but no luck there either. Probably something broke in the lens or camera based on the bad sound i initially heard.
06-18-2019, 06:30 AM   #8
Pentaxian
rogerstg's Avatar

Join Date: Oct 2007
Location: Rhode Island
Photos: Albums
Posts: 465
QuoteOriginally posted by soaptrail Quote
i used a cloth on the contacts, is that the correct way to clean them?
That's what I'd do, maybe with a little alcohol or even lens cleaning fluid. It seems like something happened within the lens though.

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!
da*, da* 16-50 lens, issue, k-30, kp, kp da*, lens, pentax service, repair, service, support, tech, warranty, week
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
KP vs K-70 - to KP or not to KP, that is the question OldChE Pentax DSLR Discussion 19 02-04-2018 09:43 AM
You can create a camera profile and upload pentax camera? Bigcaixon Pentax DSLR Discussion 2 02-26-2015 12:48 PM
Shootout #2 - DA 15 Ltd / Tamron 17-50 @17 / DA* 16-50 @16 / Sigma 10-20 @16 EarlVonTapia Pentax SLR Lens Discussion 4 06-23-2013 10:17 PM
DA*16-50 severe back focusing on k-x normal? twitch Pentax SLR Lens Discussion 17 01-11-2011 02:30 PM
Severe front focus: k-7 and FA 50/1.4 fulcrumx29 Pentax DSLR Discussion 16 08-08-2009 06:16 PM



All times are GMT -7. The time now is 08:00 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