Basic Photography Course

ą590 lux (130 footcandles ą55 footcandles). The color
temperature of the light source should be between
3800 K and 5000 K. The most important characteristic
of the light source is the color rendering index (CRI).
The CRI is a scale from 0 to 100 and is used to describe
the visual effect of a light source on eight standard pastel
colors. For good color rendering in the prints being
viewed, the CRI of the light source should be between
85 and 100.

Fluorescent tubes, such as the Westinghouse Living

White or the Deluxe Cool White tubes (made by several
manufacturers), have at least a CRI of 85 and a color

temperature near 4000 K. Satisfactory results also can
be obtained by using a mixture of incandescent and
fluorescent light. For each pair of 40-watt Deluxe Cool
White fluorescent tubes, a 75-watt frosted tungsten bulb
should be used.

Ring Around

Comparing the test print to a series of prints that

vary from a standard print (correct density and color
balance) in known amounts is a simple method of

determining color and density correction (fig. 12-4).
Comparing your test print to a ring around is particularly

12-7

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Basic Photography Course

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DOFMaster for Windows On-line Depth of Field Calculator DOFMaster for Mobile Devices On-line Depth of Field Table Hyperfocal Distance Chart Articles FAQ Recommended Books Support Contact Links Home As an Amazon Associate I earn from qualifying purchases.	contents <- previous page next page -> Figure 12-4.Ring around. ą590 lux (130 footcandles ą55 footcandles). The color temperature of the light source should be between 3800 K and 5000 K. The most important characteristic of the light source is the color rendering index (CRI). The CRI is a scale from 0 to 100 and is used to describe the visual effect of a light source on eight standard pastel colors. For good color rendering in the prints being viewed, the CRI of the light source should be between 85 and 100. Fluorescent tubes, such as the Westinghouse Living White or the Deluxe Cool White tubes (made by several manufacturers), have at least a CRI of 85 and a color temperature near 4000 K. Satisfactory results also can be obtained by using a mixture of incandescent and fluorescent light. For each pair of 40-watt Deluxe Cool White fluorescent tubes, a 75-watt frosted tungsten bulb should be used. Ring Around Comparing the test print to a series of prints that vary from a standard print (correct density and color balance) in known amounts is a simple method of determining color and density correction (fig. 12-4). Comparing your test print to a ring around is particularly 12-7 contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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