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02-29-2012, 10:38 AM   #301
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K-x has one of the best AWB I have had the pleasure to encounter -
BUT once in a while WB on the K-x does strange/inconsistent things -
last night was such a night - sometimes AWB would give overall orange shots - but
using the "fixed" Tungsten WB - would seem to over-correct or under-correct the WB.

Case in point -
Original of above "Fixed" Tungsten WB set - EXIF attached:


Yet from the same angle:

same "Fixed" Tungsten WB - seems over corrected to me.
I prefer this version:

I added orange and red.






03-01-2012, 08:20 AM   #302
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@UnknownVT

yeah, it happens! even if it's set to one type of WB, the camera somewhat corrects itself...
03-01-2012, 09:59 AM   #303
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There seems to me to be a very slight difference in exposure along the way - could that be affecting AWB?

BFN
David
03-01-2012, 10:32 AM   #304
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QuoteOriginally posted by Alizarine Quote
yeah, it happens! even if it's set to one type of WB, the camera somewhat corrects itself...
Thanks for the corroboration.

QuoteOriginally posted by The Jannie Quote
There seems to me to be a very slight difference in exposure along the way - could that be affecting AWB?
Hadn't thought of that.

I was being somewhat lazy in showing two already posted shots that displayed different WB under the same circumstances with fixed Tungsten WB -
they were from the same evening but a little apart time-wise in sequence -
however they both show about the same overall scene - so I thought this was valid.

But just to be more precise -

K-x shot with Tungsten WB -
original with EXIF attached

Time taken 22:14:52

the very next shot in sequence - Tungsten WB
original EXIF attached:

time taken 22:14:58 -

only 6 seconds apart but very different WB.

Here's a K-x shot with "Fixed" Tungsten WB deliberately taken outdoors in daylight:
Original K-x shot, EXIF attached

this seems to me not to be as blue as I was expecting - despite the "Fixed" Tungsten WB -
seems almost like the K-x did some AWB-like correction

Compare it to the shot I took with the K100D, also Tungsten WB outdoors in daylight:
Original K100D shot, EXIF attached:

this would be closer to what I was expecting.


Last edited by UnknownVT; 03-01-2012 at 02:49 PM.
03-01-2012, 03:53 PM   #305
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QuoteOriginally posted by UnknownVT Quote
Thanks for the corroboration.


Hadn't thought of that.

I was being somewhat lazy in showing two already posted shots that displayed different WB under the same circumstances with fixed Tungsten WB -
they were from the same evening but a little apart time-wise in sequence -
however they both show about the same overall scene - so I thought this was valid.

But just to be more precise -

K-x shot with Tungsten WB -
original with EXIF attached

Time taken 22:14:52

the very next shot in sequence - Tungsten WB
original EXIF attached:

time taken 22:14:58 -

only 6 seconds apart but very different WB.

Here's a K-x shot with "Fixed" Tungsten WB deliberately taken outdoors in daylight:
Original K-x shot, EXIF attached

this seems to me not to be as blue as I was expecting - despite the "Fixed" Tungsten WB -
seems almost like the K-x did some AWB-like correction

Compare it to the shot I took with the K100D, also Tungsten WB outdoors in daylight:
Original K100D shot, EXIF attached:

this would be closer to what I was expecting.
Very strange behaviour and, have noticed this myself. I would have thought a preset would be fixed but, as has been speculated may vary with exposure. I have noticed that slightly under exposed shots in tungsten give rather more yellowish results. I shoot RAW so this is not "really" an issue although, it would be nice to use RAW+ more often and cut down workflow
03-02-2012, 12:15 PM   #306
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Thursday -












also from last night -
please excuse the OT ringer (but I just had to show it off) -

EXIF still attached
a p&s camera that can be found for less than $79 shipped, and using its on-board flash -

Last edited by UnknownVT; 03-02-2012 at 12:28 PM.
03-09-2012, 01:57 PM   #307
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Yet another Thursday ....

can you say difficult lighting?

had fits pp this one to avoid totally blowing out the arm while trying to lift the face out of the deep shadows.
I'm sure RAW would have done better - any little bit would have helped - but it was difficult anyway.

My favorite nemesis (in low light, plus hat) -

well OK not enough light for face ...
so use reflection of keys in glasses......

there has to be a conspiracy










bit late to set the scene....

but see those percussionists off-stage to the right of the frame?



Last edited by UnknownVT; 03-10-2012 at 10:21 AM.
03-16-2012, 11:45 AM   #308
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just another Thursday?
well.....
not quite -












then back to....
"business as usual"

quite a bit of lighting difference - but the same K-x and same two humble kit zooms....

barely see the guitarist in overall stage shot -












03-18-2012, 08:13 AM   #309
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from Friday -

at a museum - difficult dynamic range - hard not to blow out the white background while bringing up the lower mid-tones of the main subjects - used tone map (curves) to pull up those mid-tones without bringing up either the highlights or blacks.

almost like the other end of the scale -

sedate start.... note the guitarist to the right, in the shadows, no direct light......


same K-x, same 50-200 kit zoom


entire Black Sabbath set.......


plenty of motion blur....







not over yet....






03-30-2012, 08:53 AM   #310
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The usual dark, distribution of light and hats!
can't beat them -
so join....


even more extreme....


white hat shadows face ....


The K-x is just magic...

opening scene setting shot shows the sort of lighting here.....

lighting from the other side is just as interesting -


this has to be one of my favorite off stage shots - a whole horn section...


low light + slow shutter speeds can yield interesting shots -


may seem that I am always complaining about the lighting -
quite the contrary - even though it's challenging to say the least
it is exactly the distribution that can make a shot like this:

love the glow from the reflected light. (EXIF re-attached to this photo)

Last edited by UnknownVT; 03-30-2012 at 09:02 AM.
04-13-2012, 12:47 PM   #311
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can you say dark?

that's night street lighting out of those windows......
it was so dark I found it hard to merely see through my viewfinder.....

of course hats were favorite...


there just has to be a conspiracy...


what bassist?



EXIF attached - look at the thumbnail to see how dark and flat the lighting was on the conga player - lifting the brightness obviously lifts the noise as well - had to deNoise it. The drummer in the background just looked too distracting, because of his checkered shirt - so had to select and blur him a bit.......


really like this shot - but difficult to process due to the high contrast.

second venue....
out of frying pan -
dreaded magenta LED lighting....


but there are some attractions to strong color lighting...


and subject matter...
04-22-2012, 11:27 AM   #312
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low light....


hat trick -









some blur, but too good to leave out......
04-23-2012, 12:09 AM   #313
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busy weekend -
good light -







overwhelming magenta - had to correct with PDCU,
as it is still a bit too much detail destroying red on face -
but it'll do.....









hiding behind equipment -








04-23-2012, 11:41 AM   #314
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that entire stage - lighting, soundboard, PA, amplification, and all electrical -
is run by solar power.....
I'm impressed.


same festival, different stage






Last edited by UnknownVT; 04-23-2012 at 11:51 AM.
04-25-2012, 11:37 AM   #315
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back to low light....




K-x AWB works mostly very well in this lighting - but once in a while it seems either to grossly over-correct or under-correct, please see previous Posts #301 & #304 -
I wonder what is throwing off the WB?

For example this shot -

EXIF attached - the embedded thumbnail shows how yellow the original was -
yet the 3 immediately preceding shots, the last being only 26 secs earlier, with the same viewpoint and composition were just fine as far as WB was concerned

Last edited by UnknownVT; 04-25-2012 at 01:52 PM.
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