Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-28-2009, 06:58 PM   #1
Site Supporter
GregK8's Avatar

Join Date: May 2008
Location: Western New York
Photos: Gallery | Albums
Posts: 614
Hot Pixels

I hope you guys don't mind all my stupid questions, but since moving up to the K20D from the K100DS I am running into more things I don't know about. Besides, I like talking to y'all.

Anyway, I have found what I think would be called a hot pixel, but it doesn't show up in every image. Maybe once every 10-20 frames. Here it is.



Seems easy to fix, but annoying none the less. Why does it only show up sometimes?

/g


Last edited by GregK8; 02-28-2009 at 06:59 PM. Reason: Trying to get the picture to show up.
03-01-2009, 06:01 PM   #2
Site Supporter
GregK8's Avatar

Join Date: May 2008
Location: Western New York
Photos: Gallery | Albums
Posts: 614
Original Poster
Would this question be more likely to be answered in a different forum?
03-01-2009, 07:27 PM   #3
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
Random hot pixels. It's unique to the K20 sensor. No DSLR before or since has managed such a feat.
Theoretically, it is only supposed to happen with the factory shipped firmware and the 2 second delay, but I never trusted this to be the case.
Apparently installing the firmware update makes it go away.
03-01-2009, 08:09 PM   #4
Site Supporter
GregK8's Avatar

Join Date: May 2008
Location: Western New York
Photos: Gallery | Albums
Posts: 614
Original Poster
Well, although I just purchased this camera, it was manufactured last year and has the original 1.00 firmware on it. Every time it happens, it looks to be in the same spot though. I suppose it couldn't hurt to upgrade the firmware and see what happens.

Thanks.

03-01-2009, 08:40 PM   #5
Ole
Administrator
Ole's Avatar

Join Date: Sep 2006
Location: Copenhagen, Denmark
Photos: Gallery | Albums
Posts: 3,881
QuoteOriginally posted by GregK8 Quote
Well, although I just purchased this camera, it was manufactured last year and has the original 1.00 firmware on it. Every time it happens, it looks to be in the same spot though. I suppose it couldn't hurt to upgrade the firmware and see what happens.

Thanks.
If it alsways is in the same place you can map it out. Refer the manual page 235.
All sensors have hot pixels, and will most likely develop more over time. Fortunately the user can map them out on newer cameras like the K20D. Before that the camera would have to go in for service.

Shooting raw is another way to solve the issue since most raw converters will get rid of the hot pixels.
03-02-2009, 01:42 AM   #6
Veteran Member




Join Date: Jan 2009
Location: Budapest
Posts: 821
QuoteOriginally posted by Wheatfield Quote
Random hot pixels. It's unique to the K20 sensor. No DSLR before or since has managed such a feat.
It's not unique to K20, sometimes I also get these random hot pixels on my K-m (they look exactly the same as in the above picture).
03-02-2009, 08:10 AM   #7
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
QuoteOriginally posted by simico Quote
It's not unique to K20, sometimes I also get these random hot pixels on my K-m (they look exactly the same as in the above picture).
I see. They've taken it from flaw to feature.
How clever of them.
03-02-2009, 09:47 AM   #8
Veteran Member




Join Date: Nov 2008
Posts: 344
QuoteOriginally posted by Wheatfield Quote
I see. They've taken it from flaw to feature.
How clever of them.
i get them in my k100ds all the time, but adobe gets rid of them without problems; but they still annoy the heck out of me

03-04-2009, 07:17 AM   #9
Senior Member




Join Date: Jan 2009
Location: Los Angeles
Posts: 113
QuoteOriginally posted by simico Quote
It's not unique to K20, sometimes I also get these random hot pixels on my K-m (they look exactly the same as in the above picture).
I noticed 1 hot pixel when I got my k-m. I just recently tried the pixel mapping. Hopefully this solves the problem.
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, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Any hot pixels on your K-5? Raybo Pentax K-5 54 12-15-2010 01:51 PM
Hot pixels - K7 shininglight Troubleshooting and Beginner Help 1 10-31-2009 08:13 PM
hot pixels cobra333 Pentax DSLR Discussion 4 01-20-2009 07:21 AM
Hot pixels richard64 Pentax DSLR Discussion 4 08-05-2008 05:50 PM
hot pixels silverknight Pentax DSLR Discussion 4 03-30-2008 08:48 AM



All times are GMT -7. The time now is 11:12 PM. | 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