SFRplus Chart: Inkjet on Paper - 4:1 Contrast Ratio-3NH

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SFRplus Chart: Inkjet on Paper - 4:1 Contrast Ratio

SFRplus Chart: Inkjet on Paper - 4:1 Contrast Ratio Instructions Operating Manual SFRplus Chart: Inkjet on Paper - 4:1 Contrast Ratio PDF

This SFRplus Chart: Inkjet on Paper - 4:1 Contrast Ratio Instrument are Certified with

1 Years Warranty (Additional support period of 3 years)

SFRplus options are offered to support a wide range of image testing applications.

Options include:

Contrast Ratios Options

4:1 contrast ratio matches the upcoming new ISO-12233 specs.
10:1 and 2:1 contrast ratios Use of both contrast levels improves ability to analyze non-linear signal processing, which may not affect the lower contrast 2:1 contrast ratio regions
10:1 contrast only improves the completeness of 3D maps of performance across the imaging surface.

Paper Type - Semi-gloss or Matte Options

Matte paper can be easier to light because it has less specular reflection than the semi-gloss paper. The MTF is slightly less than semi-gloss paper and does not have as deep dark tones on the stepchart.
Semi-gloss paper has slightly higher detail than matte, has deeper black tones on the stepchart, and is recommended for most applications except for wide-angle lenses.

Square Grid Dimensions Options

5x9 grid dimension is recommended for for typical DSLR formats with aspect ratios of 3:2 and typical HDTV formats with aspect ratios of 16:9.
5x7 grid dimension is recommended for typical compact camera formats with aspect ratios of 4:3.

Ink Jet Chart Resolution

This chart, and all our ink jet printed charts have an approximate MTF50 of 5 cycles/mm. For a comparison of rflective surfaces, as well as what this means when choosing your chart, please visit our Reflective Surface Comparison Blog. Please keep this in mind when choosing the size of chart. Using a chart that is too small with a high-resolution sensor can result in the MTF of the chart degrading the measured MTF of the camera system. In addition, it is important to use a chart that is large enough to accomodate the minimum focus distance, as well as the resultion of your sensor.

Paper Size and Active Area Options

Charts are available in five main sizes with variations depending on the grid dimensions selected. It is recommended that the medium sized charts be used to test imaging systems with sensors up to 12 MP, the large charts be used for testing of sensors above 12 MP and up to approximately 24 MP, and the extra-large charts be used for sensor sizes above 24 MP.

Paper Size (Including Margin)

	Square Dimensions
	5x9	5x7
X-Small	8.5" × 15"	8.5" × 10"
Small	14" × 24"	14" × 20"
Medium	24" × 40"	24" × 34"
Large	44" × 60"	44" × 60"
X-Large	44" × 74"	44" × 64"

Active Area

The active area of the chart includes white space above and below the top and bottom distortion bars. It is slightly larger than the printed area, which is bounded by the distortion bars on top and bottom. White space is included in active area because test images of the chart must include this white space in order to enable automated processing in SFRplus software.

	Square Dimensions
	5x9	5x7
X-Small	7.85" × 15"	6.75" × 10"
Small	12.5" × 24"	13.5" × 20"
Medium	22" × 39.22"	22" × 33"
Large	33" × 59"	40" × 59"
X-Large	42" × 72"	42" × 59"

Color Chart Options

Inclusion of the color chart enables testing of color accuracy. If the color option is selected, the "focus star" pattern that aides in focusing is replaced by a 20 patch color chart.

Pre-Distortion Options

Pre-distorted charts offer the ability to map the outer edges of a wide angle or fisheye lens using SFRplus. These distortion levels are available

Level	Matrix
No distortion	[1 1]
Distort	[0.833 1.123]
Distort+	[1.167 1.577]
Ultradistort	[1.167 1.982]

We do not recommend using semi-gloss paper for wide angle lenses or pre-distorted charts

12 Quality Inspection Processes

With 12 rigorous quality inspection processes in place, we ensure a high yield rate of up to 98% for batch processed precision parts.

DFM Analysis

Dimensional Tolerance

Material Testing

CNC Machining

FQC Detection

SPC / CPK

Problem Found

Problem Solving

OQC Detection

Surface Treatment

Full Inspection

Package

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FAQs About SFRPlus Test Charts

a. Before installation, please Copy CQCS3 folder to your computer and don’t remove any files in CQCS3 folder.

b. Double-click the setup.exe to install CQCS3 software.

c. Then double-click Install.bat under the CQCS3USB_Driver file to install the driver.

d. Detailed installation information please read the "Installing Software" under CQCS3 User manual.doc.

Spectrophotometer, Colorimeter, Gloss meter, Haze Meters, Coating thickness meter, window tint meter, UV meter, Leeb hardness tester, Light booth, Color Test Chart, Ultrasonic thickness gauge. Threenh Technology company adheres to independent design, research and development, production and sales of various measuring instruments.

Our machine is packed by standard export wooden box, it won’t be damaged. We’ve delivered many testing machines abroad by sea or by air without damage.

a. When the colorimeter is disconnected to the PC, "Connection Timeout" will occur. At the moment, you have to check whether the USB cable is well connected the colorimeter and the PC. Then you can re-plug the USB to try out.

b. After ensuring the colorimeter is connected to the PC with USB cable, turn on the colorimeter and enter the main menu. Select "Comm" and press "Enter" key to start communication.

c. Turn off CQCS3 software, and reopen it.

a. It’s needed to perform manual calibration for NH310 when first starting.

b. In the subsequent starting, NH310 will perform auto calibration at startup. No need to perform manual calibration.

c. Suggestion: it’s best to perform manual calibration once a week or when NH310 measured data is not accurate.