Go Back   Steve's Digicams Forums > Post Your Photos > Biweekly Shoot Out

Reply
 
Thread Tools Search this Thread
Old Jun 2, 2005, 9:49 PM   #1
Senior Member
 
TheGhost's Avatar
 
Join Date: Nov 2003
Posts: 103
Default

Nice and cool to boiling hot!



I also have another lava lamp. I should try mixing the two together and see what pops up.
TheGhost is offline   Reply With Quote
Sponsored Links
Old Jun 2, 2005, 11:32 PM   #2
Moderator
 
calr's Avatar
 
Join Date: Sep 2003
Location: Beaverton, OR
Posts: 8,466
Default

Since this is a wrong white balance challenge, can you tell us how you shot these pictures. What camera settings? How was white balance set? What room lighting was used in addition to the lamp. If we are to learn from what we see, we need to know exactly what you did. Also, what color is the lamp and what color are the walls?

Cal Rasmussen
calr is offline   Reply With Quote
Old Jun 3, 2005, 7:19 AM   #3
Senior Member
 
TheGhost's Avatar
 
Join Date: Nov 2003
Posts: 103
Default

This shot was taken in a pitch black room with only the lava lamp as a light source. The colour of the lava lamp is purple (left). The walls are a very light cream colour, not quite fully white.

Here are specific details of both images:
Common:
EOS 300D w/ EFS 18-55mm
ISO: 100
Ap: F/8
Shutter: 30"

Left: Purple (actual)
White Balance: Tungsten

Right: Red (warm)
White Balance: Fluorescent

Perhaps what I'll do tonight is move the lava lamp away from the wall and produce a flat picture of the purple and red, then use that as my custom WB to take a regular indoor/outdoor shot. Or do you prefer we not use such colour extremities? Are you looking for the more common WB errors?
TheGhost is offline   Reply With Quote
Old Jun 3, 2005, 12:04 PM   #4
Senior Member
 
Canna W's Avatar
 
Join Date: Nov 2004
Posts: 1,038
Default

Hi The Ghost,

Re. pic 1

Because I have a brain like a pea, I can't work out why a white light source is casting a purple light on the white walls -even if you have set the w.l. to tungsten. Surely the light source and the walls would be the same colour?

Sincere apologies for having a tiny brain, but it would be good to understand.

All best wishes,

Caroline.
Canna W is offline   Reply With Quote
Old Jun 3, 2005, 5:26 PM   #5
Senior Member
 
TheGhost's Avatar
 
Join Date: Nov 2003
Posts: 103
Default

Hey Canna,

The lava lamp is actually a purple fluid/glow. The reason the lamp looks white like that is because I left the shutter open for 30 seconds. It was open long enough to illuminate the surrounding area, but to long for the light source which overexposed. If you look at the edges of the lamp you'll see a faint purple corona.
TheGhost is offline   Reply With Quote
Old Jun 3, 2005, 11:32 PM   #6
Senior Member
 
Canna W's Avatar
 
Join Date: Nov 2004
Posts: 1,038
Default

Hi The Ghost,

Thank you for explaining....

All best wishes,

Caroline.


Canna W 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 1:14 PM.