Recalibrating WB u/w

mookie · 23rd February 2005

Hi, have a silly question to ask.

Read somewhere that some divers recalibrate their WB u/w to compensate for the colour as we dive deeper.

If I am shooting using a strobe, would this method be needed?

TIA

uginz · 23rd February 2005

actually no.

you are already using a strobe that should give back the reds.

if you WB with the strobe on, there isn't much effect.

BUT if you WB without the strobe and den shoot with the strobe, you'll very very red pics. coz you overcompensate for the reds.

beivied · 23rd February 2005

alex mustard did manual white balance with filter and had quite decent results. at very shallow depths though.

one drawback of using manual white balance, because you are telling it that the white slate which look a bit bluish underwater is white, it compensates that the water is also white instead of blue, so when you try to take wide angle, you find that your pics looks overexposed, due to the camera thinking the blue background is white.

this is what i have tried la, maybe others have a better or different opinion

siaoon · 23rd February 2005

hihi... thought i'm not the expert here... but i think as wat uginz says... the strobe shld help u to gain back your colour.. provided that u r not far away from yr subject... that is ok for macro..

as for wide angle.. depending on the power of yr strobe and your subject.. u still lose certain level of reds loh..

Anyway.. the best answer u can get is to do an experiment yrself...

juz remember to share w us your findings lah..

*another military discussion on paper..

waisj · 24th February 2005

Originally Posted by beivied

alex mustard did manual white balance with filter and had quite decent results. at very shallow depths though.

one drawback of using manual white balance, because you are telling it that the white slate which look a bit bluish underwater is white, it compensates that the water is also white instead of blue, so when you try to take wide angle, you find that your pics looks overexposed, due to the camera thinking the blue background is white.

this is what i have tried la, maybe others have a better or different opinion

wah. beivied becomin' an expert de neh.!!! kekeke

Goondoo · 24th February 2005

Originally Posted by uginz

actually no.

you are already using a strobe that should give back the reds.

if you WB with the strobe on, there isn't much effect.

BUT if you WB without the strobe and den shoot with the strobe, you'll very very red pics. coz you overcompensate for the reds.

You mean you can WB with the strobe on?!?!

beivied · 24th February 2005

Originally Posted by waisj

wah. beivied becomin' an expert de neh.!!! kekeke

hmmm... the expert who told me is seems to called something like w@*sj???

mookie · 24th February 2005

Hi guys, thanks for the info and help!

As for experimentation, won't be able to do any for these few months, am in Beijing for attachment...haha...surrounded by land.

uginz · 25th February 2005

Originally Posted by Goondoo

You mean you can WB with the strobe on?!?!

you can!
well, at least my canon s45 can. =P dunno abt the other brands.

Goondoo · 25th February 2005

Originally Posted by uginz

you can!
well, at least my canon s45 can. =P dunno abt the other brands.

I seriously had never tried!

uginz · 25th February 2005

Originally Posted by Goondoo

I seriously had never tried!

haha.
dun bother lah. doesn't help at all.

23rd February 2005	#1
mookie Member Join Date: Aug 2003 Location: Sunnypore Posts: 138	Recalibrating WB u/w Hi, have a silly question to ask. Read somewhere that some divers recalibrate their WB u/w to compensate for the colour as we dive deeper. If I am shooting using a strobe, would this method be needed? TIA

23rd February 2005	#2
uginz Member Join Date: Feb 2004 Posts: 346	actually no. you are already using a strobe that should give back the reds. if you WB with the strobe on, there isn't much effect. BUT if you WB without the strobe and den shoot with the strobe, you'll very very red pics. coz you overcompensate for the reds.

23rd February 2005	#3
beivied Moderator Join Date: May 2003 Location: East, Singapore Posts: 4,213	alex mustard did manual white balance with filter and had quite decent results. at very shallow depths though. one drawback of using manual white balance, because you are telling it that the white slate which look a bit bluish underwater is white, it compensates that the water is also white instead of blue, so when you try to take wide angle, you find that your pics looks overexposed, due to the camera thinking the blue background is white. this is what i have tried la, maybe others have a better or different opinion

23rd February 2005	#4
siaoon Member Join Date: Dec 2003 Posts: 738	hihi... thought i'm not the expert here... but i think as wat uginz says... the strobe shld help u to gain back your colour.. provided that u r not far away from yr subject... that is ok for macro.. as for wide angle.. depending on the power of yr strobe and your subject.. u still lose certain level of reds loh.. Anyway.. the best answer u can get is to do an experiment yrself... juz remember to share w us your findings lah.. *another military discussion on paper..

24th February 2005	#8
mookie Member Join Date: Aug 2003 Location: Sunnypore Posts: 138	Hi guys, thanks for the info and help! As for experimentation, won't be able to do any for these few months, am in Beijing for attachment...haha...surrounded by land.