View Full Version : 20D AWB
tony fanning
3rd of June 2006 (Sat), 14:39
I was using my 20D and 70-200 f4L in bright sunshine today,and when I started processing the images ,they all had a white balance that was around the 4400 mark-way to cool!? Is this normal for the AWB to do this?
adas
3rd of June 2006 (Sat), 14:46
Perhaps there was a dominant color in the pictures that could've throwed the WB off?
SkipD
3rd of June 2006 (Sat), 15:07
I have found AWB to be wrong much more often than right with my 20D. I never use AWB, but instead make my best guess about the lighting characteristics. I always shoot in RAW (plus large JPG), so making tweaks to white balance on the computer is extremely simple.
tony fanning
3rd of June 2006 (Sat), 17:10
I shoot in RAW and use Raw shooter essentials to process. I just cannot beleive how far off the AWB was today- We`re not use to sunny weather here. Cloudy days-the AWB is pretty much spot on!
illmatik53
4th of June 2006 (Sun), 02:16
interesting thought there. i agree. so what are good alternatives/practices to using the AWB. Got any tips?
SkipD
4th of June 2006 (Sun), 07:15
interesting thought there. i agree. so what are good alternatives/practices to using the AWB. Got any tips?If you are shooting only .JPG format, then you should select the white balance in the camera (prior to shooting the photo) according to the type of light falling on the subject. Some experimentation and/or experience may be necessary to get it right in some situations.
If you shoot in RAW mode, then you can change the white balance setting during the RAW conversion process (processing the RAW image into a useable format) as easily as changing the setting in the camera. RAW images cannot be used directly. They must be converted in software to produce a useable image file. A RAW file is, in many ways, like a film negative.
threep press
4th of June 2006 (Sun), 10:25
one thing more, what do u think, which one is better :
1 # Auto Whitr Ballnce or
2 # Custom White Ballance ??
i have used ExpoDisk, but i haven't still get any good responce from it !!
anybody any idea ??
http://www.expoimaging.net/products/product_detail.aspx?id=MTAwMQ==
adas
4th of June 2006 (Sun), 12:54
Use CWB only when the lighting is real tough. For example when multiple kind of lights mix, or when the light doesn't follow the incandescent black body scheme, that is, it's not following the Kelvin scale. In this case the 'Tint' scale is off from zero.
To Tony. Sill not understand your initial question. You were wondering about how low the AWB was. But how about the pictures? Do they came up right with that value (4400), or you had to adjust it further?
tony fanning
4th of June 2006 (Sun), 16:22
Hi adas,
I just wanted to know if my 20D was OK, because I shot in full sun and with AWB and it come out at a very cool 4400. I thought it would have been at around 5200 at least. I was shooting a variety of subjects at different focal lenths and metering modes.
crn3371
4th of June 2006 (Sun), 16:30
I've had similar results using AWB in full sun. For me, I try to use one of the preset settings especially if I'm shooting in full sun.
threep press
4th of June 2006 (Sun), 23:34
Hi,
Thanks for helping reply.
For wide angle shoot, like landscape shooting.
which metering and white balance is good for picture?
threep press
4th of June 2006 (Sun), 23:42
I have found AWB to be wrong much more often than right with my 20D. I never use AWB, but instead make my best guess about the lighting characteristics. I always shoot in RAW (plus large JPG), so making tweaks to white balance on the computer is extremely simple.
is any difference betwen RAW and JPEG specially light color and sharpness?
threep press
11th of July 2006 (Tue), 09:26
Hi
I am little bit confused.
Canon EF 70-200mm f/2.8 L IS USM Lens Vs.
Canon EF 70-200mm f/2.8 L USM Lens
Because of different of big money.
which one I buy?
any body help me to make a disition?
Curtis N
11th of July 2006 (Tue), 09:34
I just wanted to know if my 20D was OK, because I shot in full sun and with AWB and it come out at a very cool 4400.I usually have good luck with AWB on my 20D outdoors, but I also shoot RAW so I can adjust any shot that the camera doesn't get right. Shooting RAW also allows you to easily set the same color temp to a series of shots (with AWB the camera will "guess" a little differently for each shot).
It's hard to guess why AWB didn't work well for you in this case without sample shots to look at.
JMHPhotography
11th of July 2006 (Tue), 09:38
Hi
I am little bit confused.
Canon EF 70-200mm f/2.8 L IS USM Lens Vs.
Canon EF 70-200mm f/2.8 L USM Lens
Because of different of big money.
which one I buy?
any body help me to make a disition?
a bit off topic, no? Buy what you can afford. If you can afford the IS model... get it. IF you don't need IS on some occasions you can always turn it off.
JMHPhotography
11th of July 2006 (Tue), 09:43
I only use AWB to just get it close so that I minimize clipping in any color channels for JPEG. Using Raw you don't have the problem... but why do RAW/JPEG if you are gonna end up throwing out the JPEG? I try to get a whitebalance reference in the same lighting for use later to get the colors right. I just got a Whibal for that purpose, but prior to getting that.. I used the reference card in the back of Scott Kelby's book Photoshop CS2 for digital photographers. I agree that something in the shot must have fooled the camera in thinking that the lighting was different than it was. 4400° K is way too cool for bright outside sunlight. Usually that's about 5000° - 5600°
Lester Wareham
11th of July 2006 (Tue), 10:17
I generally find it is OK in normall lighting conditions unless there is a dominant colour, at least not so bad its obvious. In very overcast or twilight conditions its miles off.
I should proably use a grey card more often than I do.
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