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12-24-2013, 08:10 AM   #1
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Yellowish photos question - ?

When I use the Pentax k-r last night with flash, the photos would turn out yellowish.
It only happened in this one room that had two lamps on. I did test photos in other rooms and they came out fine.
I shot without flash and they came out good.
What's going on ?

Additional info: battery was almost dead


Last edited by Michael Piziak; 12-29-2013 at 08:20 AM.
12-24-2013, 08:17 AM   #2
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It just needs a wee tweak in PP to your WB and all will be fine. The two lamps would have been domestic household types which often give this orangey cast to images.
12-24-2013, 08:29 AM   #3
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QuoteOriginally posted by Michael Piziak Quote
with flash, the photos would turn out yellowish.
It looks like the flash did not fire, therefore you get the yellow tone from tungsten lights. If you intentionally shoot that way you will want to change the white balance (WB) in the camera, otherwise automatic white balance (AWB) should be OK for flash.
12-24-2013, 09:05 AM   #4
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Using flash in presence of tungsen llighting

If you want to use flash, and light bulbs (incandescent/tungsten) are being used as well, you need to convert the flash output to match the light bulbs and set the camera to tungsten light (about 2800-3200K depending light bulbs).

Using the camera flash holding a filter (a regular circular lens filter will do fine--they can be gotten used quite cheaply) in front of flash. You want a filter that originally converted tungsten film to daylight--believe its an 85B (this is for larger wattage 3200K light bulbs--but close enough except for critical applications like photographing art work.

The idea is you want to adjust the light from the flash and make it "warmer" (more orange), which is what you do to use tungsten film in daylight--there you are converting the daylight to match the film.

Although not a perfect solution in ACR for example (if you shot in raw) you can click on a white/gray surface and convert the color temperature. As it is mixed lighting it may not be that good.

12-24-2013, 09:17 AM   #5
dms
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I confirmed the 85B filter type.

Adding a 81 B filter will reduce the light another 200K (closer to the typical household light bulb temperature of 2850 to 2900K).

For those who do this kind of thing more critically a color meter is needed. The Gossen Sixticolor can be gotten used cheaply ($50. about) and a set of about 6-8 appropriate Wratten color filters allows most situations to be addressed (but not mixed lighting of outdoor and incandescent, or flourescent and outdoor or tungsten, etc.)
12-24-2013, 09:36 AM   #6
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Since you are using digital, you can just hit the WB button and change it to Tungsten. In the Menu, some cameras have a Tungsten Strong Correction option, maybe you want to enable it.
You might not be allows to change the white balance in all modes, so maybe switch to P or Sv on the mode dial.
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