Go Back   Steve's Digicams Forums > Digicam Help > General Discussion

Reply
 
Thread Tools Search this Thread
Old Apr 7, 2007, 7:22 PM   #1
Junior Member
 
zekmoe's Avatar
 
Join Date: Dec 2003
Posts: 10
Default

I've been getting these weird spots on my camera shots. It's only happened lately. I'm no photographer I know, but it's weird and unsatisfying. Here's an example



I have a Sony DSC-T10. Any suggestions on how I would set it to not get these spots? It doesn't look like the lens is dirty and spots occur at very different places all the time. Lower lighting of course, but I do use the flash, and it's indoor home shots mostly. Help appreciated.
zekmoe is offline   Reply With Quote
Sponsored Links
Old Apr 7, 2007, 7:27 PM   #2
Senior Member
 
Join Date: Mar 2005
Posts: 1,870
Default

Airborne dust particles. The light from your flash is reflecting off them. It's not your camera - it's your air.

the Hun


rinniethehun is offline   Reply With Quote
Old Apr 8, 2007, 1:00 PM   #3
Moderator
 
fishycomics's Avatar
 
Join Date: Jul 2005
Location: NYC NY
Posts: 9,621
Default

can also be moisture
fishycomics is offline   Reply With Quote
Old Apr 9, 2007, 2:26 AM   #4
Senior Member
 
Hayward's Avatar
 
Join Date: Jan 2007
Posts: 1,318
Default

fishycomics wrote:
Quote:
can also be moisture
Or dried residue of a moisture spot on the lens. (Espc. wide open) that the flash is reflecting back against.
Hayward is offline   Reply With Quote
Old Apr 9, 2007, 9:02 PM   #5
Senior Member
 
VTphotog's Avatar
 
Join Date: Mar 2005
Location: Extreme Northeastern Vermont, USA
Posts: 4,214
Default

You actually have two different types of spots here. The large, bright spot which show on the rug, and the two smaller ones to the left, as well as a few others less visible, are internal reflections from the flash reflected off the console. Others are either dust in the air or on the lens, mixed with other reflections from the ceiling light. This is fairly common with wide open apertures and zoom lenses on digicams, particularly those with less than great anti-reflective coatings.

As to what to do about it: first make sure your lens is clean. Second, if you can, shoot the picture at a larger numerical aperture number, such as f/8.

brian
VTphotog is offline   Reply With Quote
Old Apr 10, 2007, 6:02 PM   #6
Moderator
 
fishycomics's Avatar
 
Join Date: Jul 2005
Location: NYC NY
Posts: 9,621
Default

when I said Moisture , I should have said exposed to Humidity, or damp areas causing the lens to show the spots on it? if water or etc

typical pic here? Universal studio's earthquake


fishycomics is offline   Reply With Quote
Old Apr 10, 2007, 7:54 PM   #7
Senior Member
 
Join Date: Mar 2005
Posts: 1,870
Default

This flash shot was taken in a foundry, shortly after someone had sprayed a white powder from an aerosol can. The ghostly circles appearing in the frame are a result of the flash reflecting off the airborne particles. The pics taken before the spray were perfectly clean and free of these artifacts. After about a half an hour, the particles settled and the pictures were clean once again.

the Hun
Attached Images
 
rinniethehun 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 7:58 PM.