Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-16-2016, 09:51 AM   #1
New Member




Join Date: Jan 2016
Posts: 1
Beware of Digital Preview!

Hi,

Just wanted to give people a heads up about an issue that occurred with my K-3, where the digital preview dial shorted out the on/off switch. I don't really use digital preview, as I usually just take the shot and look at the histogram and re-take if necessary (but feel free to explain to me why this is a valuable feature--I'm definitely unfamiliar and open minded about it!). Anyways, I was showing the features of the camera to my spouse, who will be using it occasionally, and I come to showing him the digital preview option associated with the On/Off switch. At the time, the camera was set to a fairly slow shutter speed in manual mode, and I tripped the digital preview switch without giving this much thought (honestly it was the first time I had ever turned the dial to that function). The camera then starts trying to process the digital preview for this long exposure, and then finishes after awhile and displays the preview. All seems well and good. Well then 2 minutes later when I try to turn off the camera, it won't shut down. The LCD remained lit, the shutter would release and take photos, I could change settings, etc; all while the on/off switch was positioned to OFF. Needless to say this was alarming!

After doing some research, it sounds like the On/Off switches in the K-3ii are prone to shorting out, but I've yet to see a post about this happening in the K-3. Has anyone else had this issue? Could the fact that the camera was set to such a slow shutter speed (ie 10") be relevant?

In the end, I was forced to send the camera in, because the only way to shut it off was to pull the battery, and this wasn't a workable long term solution for me. Once I got the camera back, I immediately customized the buttons so that the preview dial is set to optical preview, and I also have the RAW button programmed to do optical preview, so I can check DoF without even touching the on/off dial (I'm too paranoid now!), if I want to do a preview of some kind before taking the shot.

Well, hopefully no one else has this issue, but figured it was worth warning others.

Happy new year,
Cheers,
Alex

01-16-2016, 11:29 AM   #2
Pentaxian
Oldbayrunner's Avatar

Join Date: Mar 2013
Location: Havre de Grace, MD
Posts: 1,219
I don't use the digital preview using the switch, I use optical and have my raw/fx button for digital. Used that on 3 cameras so far without a glitch.
01-16-2016, 11:31 AM   #3
Site Supporter




Join Date: Feb 2015
Photos: Albums
Posts: 2,812
QuoteOriginally posted by apogueski Quote
Has anyone else had this issue?
Yes, I had the same issue, the camera freezes and the only way to get it out of that mode is to remove the battery and put it back in. I believe it is a firmware bug that happens when the camera is doing an action (access to SD card) and a digital preview operation takes place at the wrong point in time. I can reproduce it. I mentioned this bug on the forum but it was denied.
01-16-2016, 01:37 PM   #4
Loyal Site Supporter
Kath's Avatar

Join Date: Jan 2014
Location: Portland, OR
Photos: Gallery
Posts: 694
I have had a similar thing happen twice, with shorter exposures. Must admit, it scared the daylights out of me when it happened and, one of those times, I hit the switch by mistake. Since, I've just avoided going near it, but I like the idea of reprogramming the switch and will do that today. Thanks for the reminder.

Can any of you see a reason why the digital preview via the raw/fx button might end up the same way? Like the OP, I'm not sure it's been all that useful for me anyway, but would like to have access to it, should the need arise. @Oldbayrunner, sounds like you've had no issues with using the Raw/Fx button for it. I wonder if your camera isn't a problem in this regard to begin with.

01-16-2016, 01:39 PM   #5
Loyal Site Supporter




Join Date: Mar 2015
Photos: Gallery | Albums
Posts: 4,787
QuoteOriginally posted by Oldbayrunner Quote
I don't use the digital preview using the switch, I use optical and have my raw/fx button for digital. Used that on 3 cameras so far without a glitch.
Yes, this. The slide position on my on-off switch is permanently dedicated to DOF preview. I have no other use for the Raw/Fx switch on my K5; might as well do digital preview.

(I had at one point keyed raw/fx to three-shot bracket, but discovered to my dismay that pushing it a second time did not appear to revert the camera to single-shot mode.)
01-16-2016, 01:46 PM   #6
Pentaxian
Oldbayrunner's Avatar

Join Date: Mar 2013
Location: Havre de Grace, MD
Posts: 1,219
QuoteOriginally posted by Kath Quote
I have had a similar thing happen twice, with shorter exposures. Must admit, it scared the daylights out of me when it happened and, one of those times, I hit the switch by mistake. Since, I've just avoided going near it, but I like the idea of reprogramming the switch and will do that today. Thanks for the reminder.

Can any of you see a reason why the digital preview via the raw/fx button might end up the same way? Like the OP, I'm not sure it's been all that useful for me anyway, but would like to have access to it, should the need arise. @Oldbayrunner, sounds like you've had no issues with using the Raw/Fx button for it. I wonder if your camera isn't a problem in this regard to begin with.
I've used that setup on three cameras, no glitches.
01-17-2016, 09:36 AM - 1 Like   #7
Senior Member




Join Date: Nov 2015
Location: Sydney
Posts: 127
Maybe a stupid question but what does the digital preview function actually do?
01-17-2016, 10:40 AM   #8
Senior Member




Join Date: Dec 2006
Location: Sweden
Photos: Gallery
Posts: 290
QuoteOriginally posted by Theov39 Quote
Maybe a stupid question but what does the digital preview function actually do?
You take the pic, but donīt save it to the card ( so you donīt have to delete pics) . You can look at the picture without pressing playback and you can save it if you like in Jpeg or Raw.
It would bee great if it have a option for exampel 4 pics with f2, f5,6, f11 and f22. Then you can go forward and back and look at different aperture or shutter-times, instead of looking in the dark viewfinder at optical preview.

01-17-2016, 10:58 AM   #9
Pentaxian
Oldbayrunner's Avatar

Join Date: Mar 2013
Location: Havre de Grace, MD
Posts: 1,219
Optical preview was designed to check your depth of field and exposure. The darkness seen through the viewfinder indicates too low of an exposure with adjustments needed. The viewfinder will brighten to normal when the exposure adjustments are correct.
01-18-2016, 08:47 AM   #10
Pentaxian




Join Date: Dec 2010
Location: Ontario
Photos: Gallery
Posts: 2,275
QuoteOriginally posted by Oldbayrunner Quote
Optical preview was designed to check your depth of field and exposure. The darkness seen through the viewfinder indicates too low of an exposure with adjustments needed. The viewfinder will brighten to normal when the exposure adjustments are correct.
Which camera has an optical preview that adjusts brightness based on exposure settings (besides the aperture of course)? I've never seen one where the optical preview was supposed to reflect overall exposure, it's just DoF (though it's tough to accurately judge from the tiny and now possibly dark viewfinder).
01-18-2016, 09:11 AM   #11
Pentaxian
Oldbayrunner's Avatar

Join Date: Mar 2013
Location: Havre de Grace, MD
Posts: 1,219
I don't know what cameras you use but every camera I have used with optical preview going back to my slr days when used the view finder will be darker if the exposure is incorrect and lighten to a brightened state when it is, coupled with checking the depth of field.
01-18-2016, 09:18 AM   #12
Pentaxian




Join Date: Dec 2010
Location: Ontario
Photos: Gallery
Posts: 2,275
QuoteOriginally posted by Oldbayrunner Quote
I don't know what cameras you use but every camera I have used with optical preview going back to my slr days when used the view finder will be darker if the exposure is incorrect and lighten to a brightened state when it is, coupled with checking the depth of field.
Say the k5iis since we both have one. To clarify, with these settings:

1) f/16, iso 80, 1/8000s

2) f/16, iso 51200, 30s

are you saying that when the optical preview is engaged, the brightness through the viewfinder is different between 1) and 2)? For me, they're both just as dark. Which makes sense since the only way the camera can control the brightness of the optical viewfinders is through the aperture, and it's stopping it down to f/16 in both cases.
01-18-2016, 09:27 AM - 1 Like   #13
Pentaxian
Oldbayrunner's Avatar

Join Date: Mar 2013
Location: Havre de Grace, MD
Posts: 1,219
No, I stand corrected, I brain farted on this it will only brighten if the aperture is changed. I was in the process of editing my last post as your response posted
01-18-2016, 09:32 AM   #14
Pentaxian




Join Date: Dec 2010
Location: Ontario
Photos: Gallery
Posts: 2,275
Brain farts tend to cloud up the viewfinder, so that makes sense
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, issue, k-3, k3, on/off, pentax k-3, preview, shot, shutter, switch, time
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Beware of 4K Monitors! nomadkng General Photography 4 01-06-2015 08:04 PM
Optical or digital preview Gerrys Troubleshooting and Beginner Help 11 09-08-2014 07:56 AM
Digital Preview vs Live View ckusnierek Troubleshooting and Beginner Help 28 04-09-2010 08:13 PM
K20D digital preview? Javaslinger Pentax DSLR Discussion 7 02-03-2009 11:12 AM
Digital or Optical Preview? deludel Pentax DSLR Discussion 30 04-29-2008 11:32 PM



All times are GMT -7. The time now is 03:30 PM. | See also: NikonForums.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