The Showfoto Handbook
Instead of ﬁddling around with the above controls, you can simply use the Temperature Tone
Color Picker button. Press on this button and click anywhere on the original preview image to
get the output color of that area to calculate the white color balance temperature settings. This
way, Temperature and Green values are automatically computed.
In addition you can set the White Balance using the preset list. These are the white color balance
temperature presets available:
40 Watt incandescent lamp.
200 Watt incandescent
lamp, studio lights, photo
Sunrise or sunset light.
Tungsten lamp or light at 1
hour from dusk or dawn.
Neutral color temperature.
Xenon lamp or light arc.
Sunny daylight around
Electronic photo flash.
Overcast sky light.
Color Temperature is a simpliﬁed way to characterize the spectral properties of a light source.
While in reality the color of light is determined by how much each point on the spectral curve
contributes to its output, the result can still be summarized on alinear scale. This value is useful
e.g. for determining the correct white balance indigital photography, and for specifying the right
light source types in architectural lighting design. Note, however, that light sources of the same
color (metamers) can vary widely in the quality of light emitted.
Low Color Temperature implies more yellow-red light while high color temperature implies
more blue light. Daylight has arather low color temperature near dawn, and ahigher one during
the day. Therefore it can be useful to install an electrical lighting system that can supply cooler
light to supplement daylight when needed, and ﬁll in with warmer light at night. This also
correlates with humanfeelings towardsthe warmcolorsof light coming from candles or an open
ﬁreplace at night. Standard unit for color temperature is Kelvin (K).
Over Exposure Indicator option adds up the colors if more than one channel in a pixel is over-
exposed, and you will see the combined color resulting of White Color Balance controls settings.
This rule is applied to target preview area as an indication only and has no effect on the ﬁnal
Save As and Load buttons are used to do just that. Any White Color Balance settings that you
have set can be saved to the ﬁlesystem in a text ﬁle and loaded later.
Reset All buttonresetsallﬁlter settings to default valuescorresponding to Neutral White Balance
color. (Attention, even the neutral setting might be different from your original photograph. If
you save it, the white balance will be changed.)
184.108.40.206 Encoding Depth
Here you can change the encoding depth per color channel of the edited image. 8 bit encoding is
the common JPEG format, 16bit encoding is better suited for high quality images, but thisformat
needsmore storage space, calculationtime and is currently available with PNG, PNM, TIFF, and
DNG formats only.