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03-25-2009, 05:53 PM   #1
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k20d-red face reduction-opinion

I mistakenly shot indoor flash pics with my k20d set in vibrant mode and had some people with red facial features.this mode is skewed to magenta and red which i think is part of the problem.i see that portrait mode is skewed away from the red spectrum and maybe better suited to taking shots that lessen the red effect.i'm using the vivitar 285 zoom flash which gives me plenty of punch for only 85$.in hindsite i think that i should be more aware of what mode i shoot in when it comes to people pics.i would rather correct it at the camera setting than doing it later in a photo shop atmosphere.another question--why are some people more prone to red face photos than others when their pics are taken?the 285 does a good job for me.are the multi 100$ flashes worth the money for a particular camera? I'm from the old school where the proper combo of guide # and distance gives you a good shot when coupled with the proper f/stop.--charliezap

03-25-2009, 06:12 PM   #2
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Sound like the auto white balance is basing the color correction on the ambient light. Go into the Fn menu and change the white balance setting to flash when you plan to use the flash.
03-25-2009, 07:04 PM   #3
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That sounds reasonable--here's my plan--have several glasses of good red wine--set the camera on a tripod and take flash pics of myself in different modes and settings and see which one minimizes the red face effect.experimintation has its benifits---charliezap
03-25-2009, 08:58 PM   #4
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Camera settings can only do so much with given lighting. Add mixed lighting *(i.e. fluorescents plus flash) and you might end up these kinds of problems regardless of which setting you chose.

After the fact your best bet is to make adjustments outside the camera. Sometimes all it takes is white-balancing, then lowering saturation and/or vibrance to tone down the face. Photoshop is not the best tool for this - it's like bringing the $3000 toolbox to tighten a screw. You can use the free software that came with the camera or Lightroom as a much lighter, faster way of doing this.

As far a why some people are more prone to red-face - some just have the "right" kind of skin - it will not show as much in certain light, but flash is very unforgiving and can bring out details you just don't expect. No alcohol required! Try photographing someone with Eczema, Psoriasis, or Rosacea with flash versus fluorescent/incandescent lighting and you'll see what I mean.

03-26-2009, 07:18 AM   #5
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This is yet another example of the disadvantage of shooting jpeg v. raw.
03-26-2009, 07:28 AM   #6
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QuoteOriginally posted by charliezap Quote
That sounds reasonable--here's my plan--have several glasses of good red wine--set the camera on a tripod and take flash pics of myself in different modes and settings and see which one minimizes the red face effect.experimintation has its benifits---charliezap

.... Do you mean: take shots while your face is changing the color, or do you intend to change the camera settings also?
Here's my suggestion: every day for a week, drink the mentioned liquor, while taking series of shots of your face. The next day you change the mode, and start all over...
And post photos
03-26-2009, 07:44 AM   #7
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even if you shoot jpg why use any form of colour correction besides wb inside the camera?
03-26-2009, 08:11 AM   #8
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QuoteOriginally posted by WerTicus Quote
even if you shoot jpg why use any form of colour correction besides wb inside the camera?

The theory of WB by color temp is a bit of a fiction. Yes it is based on science but the assumption is that all the lights in the frame are the same color and that the lights are close to a black body color curve. Changing the color temp is moving all 3 channels the same to a new color temp. If the light is close to a black body color curve this will work well. If the lights are mixed (and most florescent lights are a mix of light curves) then there may not be a good match to a black body color curve. This is why the AWB can suck so badly on most cameras. They are trying to adjust to something that doesnít exist. If you use the WB PP that uses an eyedropper I thing it samples the 3 channels independently and then moves the 3 channels independently to color match. I donít know if the K20D WB that samples a target is doing this or just estimating the color temp with a more limited target of a known color.

DAZ

03-26-2009, 09:28 AM   #9
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I'm all for shooting raw! I usually do RAW + 2mp jpg so you have something for fast previews, you can email around, or look at in a slide show on the tv + wii and then good files for those ones you want good files for.

memory is cheap enough to not care about file size.
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