k20d AWB inconsistency

qksilver · 04-19-2008, 11:11 AM

Both of these shots were taken with AWB on.
my k10d never messed up white balance outside
any ideas on why my camera is doing this???
is this normal or could it be a problem with my individual camera?

Last edited by qksilver; 05-24-2008 at 04:19 AM.

kyrios · 04-19-2008, 11:34 AM

Just curious, is it bee's nest or something?

qksilver · 04-19-2008, 11:53 AM

no, a deformed growth on the tree. a giant tree tumor

qksilver · 04-19-2008, 06:14 PM

heres another example

Last edited by qksilver; 05-24-2008 at 04:19 AM.

jsherman999 · 04-19-2008, 07:06 PM

Well, that has to be the oddest couple 'test' subjects I've seen in a while - giant tree tumor and pretty blonde holding down tranquilized deer.

qksilver · 04-19-2008, 07:24 PM

haha, no tranq, Just trapped measured weighed tagged and released

kittykat46 · 04-19-2008, 07:44 PM

In both sets of photos, the depth of field in Shot 1 is different from Shot 2.
DOF doesn't affect WB directly, but it affects the amount of detail the camera captures with bokeh, and that includes colour.

From what I've seen so far, the K20D AWB is a significant improvement over the K10D, especially in handling warmer lighting.

qksilver · 04-19-2008, 10:11 PM

the second set of photos have the same DOF and were taken literally seconds apart

kittykat46 · 04-19-2008, 11:16 PM

I think the best way to check the AWB out is to do a still-life shot - shoot a static scene with a mix of items of different colour, mount the camera on a tripod or as steady as you can handheld, fix the focus and exposure using Manual Focus and Manual exposure.

Sometimes, subtle differences between shots can cause either the metering or the AWB to go to the next higher or lower step. Ever noticed how shots taken seconds apart sometimes have different shutter speeds ?

simons-photography · 04-20-2008, 10:10 AM

I'm considering using the body cap for manually setting the camera white balance, could it have been a variation is cloud ?sun comming oput or going in ?

qksilver · 04-20-2008, 10:18 AM

It is weird that my k10d never EVER did this though and a camera that is supposed to be better at AWB is giving me weird results

Stratman · 04-20-2008, 11:04 AM

To be honest, the second set of photos, i really see no difference, the 1st i can see a difference. In the 2nd set, there is more sunlight on the blonde girls face in the 2nd photo, so the colors are a bit more washed out? dunno if that is a correct term or not. The grass colors are consistent in both of them to my eyes.

simons-photography · 04-20-2008, 11:14 AM

actually I'd say on the second set that there is also a slight difference in exsposure hence a change in colour tones

qksilver · 04-20-2008, 12:16 PM

there was not a cloud in the sky that day. if you look at the second set of pictures the first one is much greener than the second. look at the bushes in the background

simons-photography · 04-20-2008, 12:23 PM

hm yes actually it might be a slight difference in the top to bottom of my monitor (perhaps I should start a topic on it) but the framing is not identical so it might have altered the WB mainly the different height of framing has altered the ratio of grass to hedge in the background altering the WB

04-19-2008, 11:11 AM	#1
qksilver Senior Member Join Date: Oct 2007 Location: Northern Virginia Photos: Gallery Posts: 131	k20d AWB inconsistency Both of these shots were taken with AWB on. my k10d never messed up white balance outside any ideas on why my camera is doing this??? is this normal or could it be a problem with my individual camera? Last edited by qksilver; 05-24-2008 at 04:19 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
AWB different at different ISO? (K20D)	augustmoon	Pentax DSLR Discussion	1	03-27-2011 04:30 PM
Autofocus Inconsistency with K20D	NeverSatisfied	Pentax DSLR Discussion	24	03-13-2009 05:43 PM
Did not buy K200d Today because of focus inconsistency.	Sitting Bull	Troubleshooting and Beginner Help	7	02-02-2009 08:01 AM
AWB & Lightroom	mathan	Digital Processing, Software, and Printing	7	09-21-2008 07:26 AM
AWB: what range?	jfdavis58	Pentax DSLR Discussion	3	02-20-2007 07:42 PM

04-19-2008, 11:34 AM	#2
kyrios Senior Member Join Date: Apr 2007 Location: Indonesia Posts: 123	Just curious, is it bee's nest or something?

04-19-2008, 11:53 AM	#3
qksilver Senior Member Join Date: Oct 2007 Location: Northern Virginia Photos: Gallery Posts: 131 Original Poster	no, a deformed growth on the tree. a giant tree tumor

04-19-2008, 06:14 PM	#4
qksilver Senior Member Join Date: Oct 2007 Location: Northern Virginia Photos: Gallery Posts: 131 Original Poster	heres another example Last edited by qksilver; 05-24-2008 at 04:19 AM.

04-19-2008, 07:06 PM	#5
jsherman999 Veteran Member Join Date: Dec 2007 Photos: Gallery Posts: 8,237	Well, that has to be the oddest couple 'test' subjects I've seen in a while - giant tree tumor and pretty blonde holding down tranquilized deer.

04-19-2008, 07:24 PM	#6
qksilver Senior Member Join Date: Oct 2007 Location: Northern Virginia Photos: Gallery Posts: 131 Original Poster	haha, no tranq, Just trapped measured weighed tagged and released

04-19-2008, 07:44 PM	#7
kittykat46 Veteran Member Join Date: Dec 2007 Posts: 923	In both sets of photos, the depth of field in Shot 1 is different from Shot 2. DOF doesn't affect WB directly, but it affects the amount of detail the camera captures with bokeh, and that includes colour. From what I've seen so far, the K20D AWB is a significant improvement over the K10D, especially in handling warmer lighting.

04-19-2008, 10:11 PM	#8
qksilver Senior Member Join Date: Oct 2007 Location: Northern Virginia Photos: Gallery Posts: 131 Original Poster	the second set of photos have the same DOF and were taken literally seconds apart

04-19-2008, 11:16 PM	#9
kittykat46 Veteran Member Join Date: Dec 2007 Posts: 923	I think the best way to check the AWB out is to do a still-life shot - shoot a static scene with a mix of items of different colour, mount the camera on a tripod or as steady as you can handheld, fix the focus and exposure using Manual Focus and Manual exposure. Sometimes, subtle differences between shots can cause either the metering or the AWB to go to the next higher or lower step. Ever noticed how shots taken seconds apart sometimes have different shutter speeds ?

04-20-2008, 10:10 AM	#10
simons-photography Veteran Member Join Date: Dec 2007 Location: Northamptonshire - England Photos: Gallery Posts: 496	I'm considering using the body cap for manually setting the camera white balance, could it have been a variation is cloud ?sun comming oput or going in ?

04-20-2008, 10:18 AM	#11
qksilver Senior Member Join Date: Oct 2007 Location: Northern Virginia Photos: Gallery Posts: 131 Original Poster	It is weird that my k10d never EVER did this though and a camera that is supposed to be better at AWB is giving me weird results

Thread Tools	Search this Thread
	Search this Thread: Advanced Search

04-20-2008, 11:04 AM	#12
Stratman Veteran Member Join Date: Mar 2007 Location: St Louis, Missouri U S A Photos: Gallery \| Albums Posts: 2,464	To be honest, the second set of photos, i really see no difference, the 1st i can see a difference. In the 2nd set, there is more sunlight on the blonde girls face in the 2nd photo, so the colors are a bit more washed out? dunno if that is a correct term or not. The grass colors are consistent in both of them to my eyes.

04-20-2008, 11:14 AM	#13
simons-photography Veteran Member Join Date: Dec 2007 Location: Northamptonshire - England Photos: Gallery Posts: 496	actually I'd say on the second set that there is also a slight difference in exsposure hence a change in colour tones

04-20-2008, 12:16 PM	#14
qksilver Senior Member Join Date: Oct 2007 Location: Northern Virginia Photos: Gallery Posts: 131 Original Poster	there was not a cloud in the sky that day. if you look at the second set of pictures the first one is much greener than the second. look at the bushes in the background

04-20-2008, 12:23 PM	#15
simons-photography Veteran Member Join Date: Dec 2007 Location: Northamptonshire - England Photos: Gallery Posts: 496	hm yes actually it might be a slight difference in the top to bottom of my monitor (perhaps I should start a topic on it) but the framing is not identical so it might have altered the WB mainly the different height of framing has altered the ratio of grass to hedge in the background altering the WB