Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-24-2019, 06:42 AM   #1
Veteran Member




Join Date: Nov 2009
Location: Iowa
Photos: Albums
Posts: 2,275
K5 questions & mirror flop

Hi there.

Thinking about picking up a used K-5 body as an upgrade to my K-x. Just a few questions, tho:

1) How much better is the low light image quality at high ISO than the K-x?

2) Is the autofocusing better/faster?

3) How common is the mirror flop issue with the K5?

4) Does the K5-II also suffer from mirror flop?

I had considered the K30/K50, but the seemingly common occurrence of the aperture block failure has put me off that idea.

Thanks! :-)

08-24-2019, 06:59 AM - 1 Like   #2
amateur dirt farmer / mod
Loyal Site Supporter
pepperberry farm's Avatar

Join Date: Dec 2014
Location: probably out in a field somewhere...
Photos: Gallery | Albums
Posts: 15,991
I have a K-5 IIs that I use regularly and have yet to experience mirror flop with it....

I do not have any experience with the K-x, so no comparisons....
08-24-2019, 07:22 AM - 1 Like   #3
Site Supporter
Site Supporter




Join Date: Nov 2012
Location: North Wales
Photos: Gallery | Albums
Posts: 2,067
Getting a K5 fixed all the mirror flop issues I had with my K-r. The K5 still even today has AFAIK good high ISO performance relatively speaking - certainly a bit better than my K3-ii which gets grainier more quickly.
Pick up a s/h K5 for, say , under 200 bucks I would suggest you can't go wrong and will be very happy.
08-24-2019, 10:32 AM   #4
Site Supporter
Site Supporter




Join Date: Dec 2015
Location: Goldsboro North Carolina
Photos: Gallery | Albums
Posts: 548
I have never heard of the 'mirror flop issue' with the K-5. Don't know what it is. I upgraded from a K10D to a K-5IIs and the mirror/shutter is much quieter on the K-5.

You can compare the K-x and the K-5/K-5IIs here:
Pentax K-x vs. Pentax K-5 vs. Pentax K-5 IIs - Pentax Camera Comparison - PentaxForums.com

I've never used a K-x, but the image quality with my K-5IIs set at ISO 800-1000 is every bit as good as my K10D at ISO 400. I've taken some really nice shots at 1600, and some decent shots at 3200. The K-5's built-in ISO noise reduction feature can either be set to auto or to specific strengths based on ISO ranges according to your preference. I and others find it works quite well.


As far as autofocus goes, the K-x uses the SAFOX VIII system. The K-5/II/IIs uses the SAFOX X system, so two generations newer? I imagine you would see some improvement. [Correction: the K-5 has SAFOX IX; the II and IIs have SAFOX X.] The autofocus sensitivity on the K-x and K-5 goes down to -1EV; on the K-5II and IIs it's -3EV.

If you buy into the K-5 family, I suggest you choose a K-5II or IIs. The back screen on the original K-5 is more easily scratched according to what I have read. I really love my K-5IIs. You can check out some of my results here:
Apet-Sure's Album: Nature-K5IIs - PentaxForums.com

Please note: I always save my jpgs at 100% image quality. When you upload them onto Pentax Forums, they sometimes get downgraded to 85%, presumably to save space on the servers. Some of the images in the folder above have been downgraded, so the originals actually look better.


Last edited by Apet-Sure; 08-24-2019 at 11:06 AM. Reason: Updated autofocus spec.
08-24-2019, 11:03 AM   #5
Otis Memorial Pentaxian
Loyal Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 33,904
QuoteOriginally posted by Apet-Sure Quote
I have never heard of the 'mirror flop issue' with the K-5. Don't know what it is.
It is a mirror control issue that got a lot of attention on the K-5 and also the K-r (IIRC, a few other lower tier bodies as well). This video illustrates nicely:


Note that this is different than the "crazy" or "runaway" mirror reported on early K-3 bodies.


Steve

Last edited by stevebrot; 08-24-2019 at 11:13 AM. Reason: accuracy
08-24-2019, 11:13 AM   #6
Loyal Site Supporter
Loyal Site Supporter
Riggomatic's Avatar

Join Date: Nov 2014
Location: Auburn, Indiana
Photos: Albums
Posts: 2,422
My K-5 does the flop thing. It only does it on a fresh charged battery. I'll run down the battery using live view for a while, then the extra shutter clicking goes away.


Maybe I'll charge up a battery, check the voltage, and do a quick test to see what voltage the shutter flop stops at.

But I still love the camera 😀

Last edited by Riggomatic; 08-24-2019 at 11:14 AM. Reason: Added text
08-24-2019, 11:16 AM   #7
Site Supporter
Site Supporter




Join Date: Dec 2015
Location: Goldsboro North Carolina
Photos: Gallery | Albums
Posts: 548
Hmmm... Good to know for future reference. Is there a fix? I'm using the last firmware version.
08-24-2019, 11:33 AM   #8
Loyal Site Supporter
Loyal Site Supporter
Riggomatic's Avatar

Join Date: Nov 2014
Location: Auburn, Indiana
Photos: Albums
Posts: 2,422
I have a "fresh" battery ( has been off the charger for a week), that measures 8.2 volts.

Popped it in, and got the extra shutter noise like in the video.

Ran live view for 10 minutes or so (misc photos), and no flopping going on now.

Battery is now at 8.1 volts.




Pentax battery and charger was used in this experiment.

08-24-2019, 01:25 PM   #9
Otis Memorial Pentaxian
Loyal Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 33,904
QuoteOriginally posted by Apet-Sure Quote
Hmmm... Good to know for future reference. Is there a fix? I'm using the last firmware version.
If you don't have it at this late date, chances are you have no need of a fix. Pentax offered a warranty fix; if I remember correctly, it involved replacement of the mirror box motor assembly. The same may still be available from Precision, though such might be dependent on availability of parts.


Steve
08-24-2019, 02:17 PM - 1 Like   #10
Pentaxian




Join Date: Sep 2012
Location: NY
Photos: Gallery | Albums
Posts: 3,675
I have not had any of that type of behavior with my K-5 IIs or the K-5 bodies that I had. I had that happen with my K-20D that I had, but all I would do is just turn the camera off, remove the battery, reinsert the battery, turn the camera back on, and the camera was fine. It was not an ongoing thing, it just happened occasionally. My K-3 II doesn't do it either.

The K-5 is capable of really nice images and is really well built in a stylish manner. It was once the flagship model.
08-24-2019, 03:00 PM   #11
Site Supporter
Site Supporter




Join Date: Dec 2015
Location: Goldsboro North Carolina
Photos: Gallery | Albums
Posts: 548
QuoteOriginally posted by C_Jones Quote
The K-5 is capable of really nice images and is really well built in a stylish manner. It was once the flagship model.
That's why I bought one. Sounds like I may have dodged the mirror flop bullet.
08-25-2019, 02:09 AM   #12
Veteran Member




Join Date: Nov 2009
Location: Iowa
Photos: Albums
Posts: 2,275
Original Poster
Thanks very much for the input! I may go on the hunt for a nice used K-5 or K-5 II. :-)
10-01-2019, 03:20 PM   #13
Senior Member




Join Date: Jun 2018
Location: Terrassa
Posts: 147
QuoteOriginally posted by GibbyTheMole Quote
Hi there.

Thinking about picking up a used K-5 body as an upgrade to my K-x. Just a few questions, tho:

1) How much better is the low light image quality at high ISO than the K-x?

2) Is the autofocusing better/faster?

3) How common is the mirror flop issue with the K5?

4) Does the K5-II also suffer from mirror flop?

I had considered the K30/K50, but the seemingly common occurrence of the aperture block failure has put me off that idea.

Thanks! :-)
I have a 50k+ actuations K-5 bought second hand and it didn't have mirror flop
What it certainly does have is some pink pixels on video, that was a sensor issue common to the three cameras that shared this sensor (Pentax-Sony-Nikon) and looks like the Pentax got the best control about it.

This is something i found about mirror flop:
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!
camera, dslr, flop, k-5, k-5 ii, k-5 iis, k-x, k5, k5 questions, mirror, pentax k-5, questions, questions & mirror
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
K5 mirror flop repair price EJMzagsfan Pentax DSLR Discussion 3 09-30-2014 01:29 PM
Mirror flop in a uk K5 tall_martin Troubleshooting and Beginner Help 2 10-01-2013 06:42 AM
Questions about mirror flop Jeff Charles Pentax K-5 11 02-05-2013 08:51 PM
K5 Mirror Flop | Flip | Flap - Ummmmmm joe.penn Pentax K-5 6 04-22-2012 09:29 AM
K5 mirror "stuck up" or "flop"? jpzk Pentax K-5 6 09-09-2011 07:20 PM



All times are GMT -7. The time now is 04:07 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