Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-18-2010, 01:25 PM   #1
Inactive Account




Join Date: Nov 2010
Location: Italy
Posts: 5
K-x: 3 secs lag between picure is taken and displayed

Hi to everybody.

I'm new to the K-x and is really fine (I also have a Canon EOS 50D).

I'm asking myself if it's normal to have a 3 seconds time lag between when a picture is shot and it is previewed on the LCD. This happens in any node: JPEG and RAW+JPEG no matter the jpeg resolution.

Hope my questio is clear.

TIA

majortom

11-18-2010, 01:47 PM   #2
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 10,600
Sounds like you may have all the corrections (chromatic aberration and lens distortion correction) turned on, and probably the Highlight Correction and Shadow Correction features turned on as well. You are asking the camera to do a lot of processing of your images before they are saved to disk. Hence the delay. The manual (p-139) advises that using these features may delay shooting speed.

The other cause may simply be a slow memory card.
11-18-2010, 01:57 PM   #3
Senior Member
stormcloud's Avatar

Join Date: Oct 2009
Posts: 235
yeah sounds like corrections to me too - recently turned them on on my k7 and thought it had broken at first lol then remembered i had changed the settings 2 days before after noticing my some CA in some images when i got home
11-18-2010, 01:58 PM   #4
Inactive Account




Join Date: Nov 2010
Location: Italy
Posts: 5
Original Poster
Chromatic aberration and Lens distortion correction enabled or not make no difference. I'm going to check now Highlight Correction and Shadow Correction.
By the way: without memory card is very fast, around 1/4 - 1/2 sec.

Thanks
majortom

11-18-2010, 02:04 PM   #5
Inactive Account




Join Date: Nov 2010
Location: Italy
Posts: 5
Original Poster
OK, if ANY of the above mentioned functions is enabled the lag is heavy. It is also reported on the manual. I'm sad the same processor is in the K-r...
Thanks again.
majortom
11-18-2010, 03:10 PM   #6
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 10,600
I shoot in RAW+ and have the corrections enabled.

Note that your shooting style will have an impact on whether any image processing delays bother you. I don't immediately try and chimp every shot, and I also shoot with the immediate image review feature turned completely off because it annoys the hell out of me to have the last image I shot flashing up at me all the time. So the lag you describe is something I personally do not notice at all in regular use of the camera.
11-18-2010, 04:16 PM   #7
hcc
Pentaxian
hcc's Avatar

Join Date: Nov 2009
Location: Brisbane, Australia
Photos: Gallery | Albums
Posts: 3,482
You receivad already a lot of good advice.

The in-camera processing can take up to 1-3 sec.. One function, the lens distortion correction , is particularly time-consuming.

Overall I switch off all in-camera corrections and I prefer to do the PP afterwards on my computer. (In my case, I use simply PDCU 4.31.)

Hope that the comments will help.
11-18-2010, 05:02 PM   #8
Veteran Member
KxBlaze's Avatar

Join Date: Feb 2010
Location: California
Photos: Gallery
Posts: 1,594
One more thing that can cause extra lag is the Copyright Information. If you have this turned on, the camera has to write the info to the picture before it can display it.

11-18-2010, 05:03 PM   #9
Veteran Member
hcarvalhoalves's Avatar

Join Date: Aug 2010
Location: São Paulo, Brazil
Posts: 836
If you don't have lens correction enabled, and without the card the delay is gone, then the delay is being caused by your SD card, you have a slow one.

Get a better one, preferably SDHC.

Last edited by hcarvalhoalves; 11-18-2010 at 05:12 PM.
11-18-2010, 05:10 PM   #10
Veteran Member
hcarvalhoalves's Avatar

Join Date: Aug 2010
Location: São Paulo, Brazil
Posts: 836
QuoteOriginally posted by KxBlaze Quote
One more thing that can cause extra lag is the Copyright Information. If you have this turned on, the camera has to write the info to the picture before it can display it.
Did you found this on the manual or is that just supposition?

I would hardly believe saving a couple extra bytes into the EXIF makes any difference.
11-18-2010, 11:16 PM   #11
Pentaxian




Join Date: Mar 2009
Location: Perth Australia
Photos: Albums
Posts: 1,511
If your a raw shooter there is no point having the corrections on.
11-19-2010, 03:43 AM   #12
Inactive Account




Join Date: Nov 2010
Location: Italy
Posts: 5
Original Poster
THANKS TO EVERYBODY !!!

Nice to now that with RAW (my standard) any correction is useless but... also for the lene distorsion?

majortom
11-19-2010, 03:45 AM   #13
Inactive Account




Join Date: Nov 2010
Location: Italy
Posts: 5
Original Poster
QuoteOriginally posted by hcarvalhoalves Quote
If you don't have lens correction enabled, and without the card the delay is gone, then the delay is being caused by your SD card, you have a slow one.

Get a better one, preferably SDHC.
Thanks, it's a SanDisk Extreme III Class 6 and gives a 20-25 Mbyte/sec in writing (I personally tested it). i therefore believe the hardest impact on performance come from image processing options.
11-19-2010, 03:57 AM   #14
hcc
Pentaxian
hcc's Avatar

Join Date: Nov 2009
Location: Brisbane, Australia
Photos: Gallery | Albums
Posts: 3,482
QuoteOriginally posted by hcarvalhoalves Quote
Did you found this on the manual or is that just supposition?

I would hardly believe saving a couple extra bytes into the EXIF makes any difference.
+1 with you.
This was discussed in an earlier thread and there is no proof that the Copyright adds to writing time.

I add that I did myself some tests with and without copyright, in Hi continuous shooting and I noted no difference at all.
11-19-2010, 05:49 AM   #15
Veteran Member
jolepp's Avatar

Join Date: Oct 2010
Location: Finland
Photos: Albums
Posts: 3,196
QuoteOriginally posted by majortom Quote
THANKS TO EVERYBODY !!!

Nice to now that with RAW (my standard) any correction is useless but... also for the lene distorsion?

majortom
The distortion correction doesn't seem to do anything to the RAW image itself: I tried this with the kit lens @18mm on a tiled wall and the barrel distortion was still there, it was removed from the embedded JPEG, however, and this is apparently where the processing time goes when shooting with RAW only. It might add some correction parameters or such to the file though that PP programs could use (?).
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, jpeg, k-x, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
K20D Shutter Lag nanhi Pentax DSLR Discussion 3 08-09-2010 04:20 AM
Canon Wonder Camera Concept displayed at Expo 2010 i83N Non-Pentax Cameras: Canon, Nikon, etc. 25 07-12-2010 02:44 AM
Daylight saving time not displayed... Rense Site Suggestions and Help 6 04-13-2009 09:25 AM
Optio MX Stops Recording after 1 min 24 secs berzans Pentax Compact Cameras 1 09-24-2008 09:16 PM
F-- displayed with Sears 135mm/f2.5 on K10D fsdogwood Pentax SLR Lens Discussion 13 10-15-2007 01:43 AM



All times are GMT -7. The time now is 02:51 AM. | 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