Difference between selecting + and –

When you print a Guide Print-RGB with each of the RGB parameters for the center picture set to 0, two simulation pictures for each RGB parameter (with the respective parameter set to +3 and –3 and the remaining two parameters set to 0) are printed around the center picture. The following explains the meaning of the + and

– symbols.

The R data, G data, and B data that make up the picture data are digitized values representing the strength of light of each color. The + setting is for strengthening the light of the corresponding color. The – setting is for weakening the light of the corresponding color. Data (light) saturation can be obtained with the + setting. When you need a white background, this feature enables you to get the desired results without changing the white.

• Setting in the + direction

When the R parameter is set to +3, for example, the light of the red component is strengthened, giving the overall picture a tinge of red. Since the amount of light also increases at the same time, the brightness of the picture increases by the corresponding amount.

However, some parts of the picture do not change no matter how much the light is strengthened. These include parts of the picture with absolutely no light components (such as pure green, cyan, and blue parts, their intermediate colors, and deep black parts), and parts of the picture with saturated light components (such as pure magenta, red, and yellow parts, their intermediate colors, and bright white parts).

• Setting in the – direction

When the R parameter is set to –3, for example, the light of the red component is weakened, giving the overall picture a tinge of cyan (the complementary color of red). Since the amount of light also decreases at the same time, the darkness of the picture increases by the corresponding amount.

This setting differs from the + setting in that a tinge of cyan is added to parts in which light components are saturated such as parts of pure reddish-purple (magenta), red, and yellow or their intermediate colors and bright white. This occurs especially in cases where the background is white or the subject is wearing white clothes.

Specific example 1: Removing yellow

To remove yellow from the subject, we recommend setting the B parameter to a + value in the Guide Print- RGB.

Specific example 2: Adding yellow

To add yellow to the subject, we recommend setting the B parameter to a – value in the Guide Print-RGB. However, you need to understand that the concept of weakening the light involves adding a tinge of yellow to

white parts. To avoid this, set a plus value for the L parameter that is equivalent to the minus value set for B parameter. This has the same effect as setting plus values for the R and G parameters without changing the B parameter. The point to note here is that the overall brightness increases.

Printing Times

Print times differ depending on the print size and paper size used.

Printing times

The following are examples of the approximate time it takes from the moment the / button is pressed on the camera to the moment the printer receives the picture data from the camera and prints one picture.

Print

Resolu-

Print size 1

Print size 4

Print size 10

paper

tion

(151 ×

(80 ×

(47 ×

 

 

101.6 mm,

60 mm,

37 mm,

 

 

6 × 4")*

3-1/4 ×

1-7/8 ×

 

 

 

2-3/8")

1-1/2")

 

 

 

 

 

UPC-X34

STD-ID

Not

Approx.

Approx.

series

 

available

80 sec

75 sec

 

 

 

 

 

 

HIGH-ID

Not

Approx.

Approx.

 

 

available

82 sec

76 sec

 

 

 

 

 

UPC-X45

STD-ID

Approx.

Approx.

Approx.

series

 

180 sec

105 sec

101 sec

 

 

 

 

 

 

HIGH-ID

Approx.

Approx.

Approx.

 

 

181 sec

105 sec

102 sec

 

 

 

 

 

UPC-X46

STD-ID

Approx.

Approx.

Approx.

series

 

138 sec

120 sec

120 sec

 

 

 

 

 

 

HIGH-ID

Approx.

Approx.

Approx.

 

 

141 sec

122 sec

116 sec

 

 

 

 

 

*With the UPC-X45 series, print size changes to 120 × 97.5 mm (4-3/4 × 3-7/8").

62 Adjusting the Printer Picture Quality