JAA79351-R.3670.A
- A54 ･ AF-S DX55-200/4-5.6G -
At repair/service facilities where there is no projector, check the resolution by shooting the high-definition
resolution chart.
1. Check the resolution
By shooting the high-definition resolution chart (J63079), confirm that the TV lines are within the standard.
Standard for the TV lines:
WIDE (55 mm): 1200 or more TV lines in the center ; 1200 or more TV lines on the periphery /4
corners
TELE (200 mm): 1000 or more TV lines in the center ; 1000 or more TV lines on the periphery /4
corners
(ref. The unit of resolution is based on TV lines, which are total number of black-and-white strips
distinguishable on the TV screen.)
Device: D100 camera, ITE high resolution chart (J63079), flicker-less fluorescent (AAA)
(a) Camera settings: Aperture-Priority Auto (A), Shooting-mode (P), Image quality mode (FINE), Image
size (FULL), ISO (200), Image sharpening (None), Tone compensation (Normal)
Reset other settings (e.g. compensation) and shoot pictures.
(b) To avoid light irregularity on the chart, for either 2 units of Z light (Z-309)(J19124) or 2 units of 15W
inverter-type fluorescent stand, use fluorescent lamp color-rendering AAA (J19124A). Set them so that
reflected light does not directly come in shot images.
As for exposure, open the shot images via PHOTOSHOP, and make an exposure compensation so that
the value of RGV becomes 219±10 LSB, when the cursor comes to white parts of the images.
(ref. : Set the exposure compensation to about +1-step for becoming 219±10 LSB.)
Resolusion inspection
Pic.1
Z light
Z-309 (J19124
）
high-definition resolution
chart
(J63079)
30 cm or more
INC
