Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Pentax / Samsung dSLR, K Mount Mirrorless

Reply
 
Thread Tools Search this Thread
Old Aug 15, 2006, 6:55 PM   #1
Senior Member
 
danielchtong's Avatar
 
Join Date: Dec 2005
Posts: 2,888
Default

In the Photo group in Toronto, there were discussion about reddish glow on most pict (usu one side only). Interesting read for those who are aiming for long exposure say 5 minutes
http://tpmg.ca/forum/viewtopic.php?t=1123

Speculation:
(1) Light leakage from the "environment." through the seal (if any)

(2) Light from the camera's internal LEDs.

(3) sensor heat through prolonged exposure

There are a lot of things to learn

Daniel
danielchtong is offline   Reply With Quote
Sponsored Links
Old Aug 16, 2006, 3:44 AM   #2
Senior Member
 
nadnerb's Avatar
 
Join Date: Aug 2005
Location: Bath, UK
Posts: 319
Default

You can't read that thread you linked to unless you are a member of that forum.

I've tried a few long exposures of about 4mins and havn't experienced this problem.
I'll try some longer ones when I get a chance.
nadnerb is offline   Reply With Quote
Old Aug 16, 2006, 4:09 AM   #3
Senior Member
 
danielchtong's Avatar
 
Join Date: Dec 2005
Posts: 2,888
Default

Sorry about the link. But I did give some summary of this article.
It was done in very low light (astro stuff) and we were away from urban area with no city light affecting our exposure. Quite a few of the Toronto members took 10-15 minutes expos
All of us experienced this reddish glow one way or the other.

Daniel

nadnerb wrote:
Quote:
You can't read that thread you linked to unless you are a member of that forum.

I've tried a few long exposures of about 4mins and havn't experienced this problem.
I'll try some longer ones when I get a chance.
danielchtong is offline   Reply With Quote
Old Aug 16, 2006, 4:50 AM   #4
Senior Member
 
Basement Shows's Avatar
 
Join Date: Mar 2004
Posts: 408
Default

What was the model(s) of the affected camera(s)?
Basement Shows is offline   Reply With Quote
Old Aug 16, 2006, 6:04 AM   #5
Senior Member
 
Peacekeeper's Avatar
 
Join Date: Jan 2006
Posts: 1,024
Default

Post a pic so we can see the issue :idea:
Peacekeeper is offline   Reply With Quote
Old Aug 16, 2006, 7:52 AM   #6
Junior Member
 
Join Date: May 2006
Posts: 23
Default

Hi

Skyglow from city lights can be seen up to 50 miles away depending on conditions.

Also there are spots on the Sun at the moment, so it could be very faint aurorae (Northern Lights), you are getting.

It must be sky related if all camera's show it.
furball is offline   Reply With Quote
Old Aug 16, 2006, 7:59 AM   #7
Senior Member
 
danielchtong's Avatar
 
Join Date: Dec 2005
Posts: 2,888
Default

Basement window and Crashman
Pl see private msg re pict and article

Daniel

Crashman wrote:
Quote:
Post a pic so we can see the issue :idea:
danielchtong is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 9:13 PM.