Nikon coolpix7900, Руководство по ремонту

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VAA46003-R.3659.A
- R5･ E7900 -
Item Criteria Applied tool(s)
Quality of image
Noise Calculate the maximum value
δ
Ymax,
δ
Rmax,
δ
Gmax and
δ Bmax of the measurement point (gray scale: 22 patches).
・ Minimum ISO sensitivity
δ
Ymax
≦
3 . 5
δ Rmax 、 δ Gmax 、 δ Bmax ≦ 3 . 5
・
ISO 200
δ
Ymax
≦
5 . 0
δ Rmax 、 δ Gmax 、 δ Bmax ≦ 5 . 0
（ 7 M, FINE, PWB, center-weighted metering, Outline: Standard
gradation: Standard, Chroma correction: 0 , Min. ISO sensitivity:
ISO 200 ）
（
Correct exposure to obtain " 220 ( 8 bits)" in the case of "White
100 %". ）
(Equip the 5100 K viewer with a scale and shoot an object in the
full range of angle of view.)
（ Perform defocusing not to generate reticulate moires. ）
（
Calculate the standard deviation
δ
Y,
δ
R,
δ
G and
δ
B of
Y, R, G and B for the central area 64 pixels × 64 pixels of each
density. ）
Gray scale chart
PHOTOSHOP
Reproduction of color
B R G B
W 209 ± 20 209 ± 20 209 ± 20
Ye 208 ± 20 208 ± 20 30 ± 15
R 180 ± 20 0 10 ± 10 10 ± 10
(Photography mode: AUTO)
(Equip the 5100 K viewer with the chart and shoot an object in the
full range of angle of view.)
(Open the recorded image data file through PHOTOSHOP and
pick up a measurement section with each color (its central area 64
× 64 pixels) with the rectangle selector tool.)
(Read the histogram's RGB.)
Color bar chart
PHOTOSHOP