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

FAQs About SFRPlus Test Charts

Since part of the light will pass through the light-transmitting materials, the colorimeter is not suitable for color measurement of such kinds of materials; however, when place a pure color material with uniform texture under the light-transmitting material, we can measure the color difference between the standard and the sample.

High Measurement Accuracy and Stability: Low ΔE fluctuation (e.g., NH300: ΔE < 0.07; NR10QC: ΔE ≤ 0.03 short-term repeatability); Reliable sensors (CMOS dual-beam/silicon photodiode) and long-lasting light sources (1.6M–3M measurements over 5 years).

User-friendly Design and Convenient Operation: Intuitive interfaces (e.g., NH300’s “fool-proof” operation), auto-calibration, and ergonomic grips for extended use; Versatile positioning (light/cross alignment) for precise measurements.

Robust Design: Our colorimter instruments are designed to withstand rigorous use, providing long-term reliability. Rechargeable lithium batteries enable 5,000–6,000 measurements per charge (e.g., NH300/TS7030), ensuring cost-effective durability.

PC Software Support for Functionality Expansion: PC software (e.g., CQCS3) supports color difference analysis, chromaticity indexing, and sample library management.

Global customer support: Our global presence across regions ensures you get the service and maintenance support you need to keep your instrument at peak performance.

Multiple Measurement Apertures and Application Scenarios: Multiple measurement apertures, different models have different measurement apertures and some models offer multiple optional apertures. Applicable to plastic electronics, paint and ink, textile and garment printing and dyeing, printing, ceramics, automotive, food, medicine and other industries for color quality control and color difference detection.

a. Right click "! USB Device" or "! SCI USB2Serial (COM6)", "Update Driver" -> "Install from a list or specific location (Advanced)" -> "Next" ->"Include this location in the search" -> "Browse", specify USB driver file path "CQCS3USB_Driver", click "Next". Then it will install successfully.

b.Detailed installation information please refers to "2.2 Installing USB Driver" in Color Quality Management System User Manual.doc.

Yes, we can offer quality certification issued by our lab free of charge, or issued by third-party international inspection Organizations with extra charge, please contact us for confirmation.

There are three measuring apertures for NH310: Φ8mm (standard accessory), Φ4mm (standard accessory), extended Φ8mm (optional accessory)

a. Turning on

b. Removing measuring aperture, install the needed measuring aperture.

c. Select "Settings-Aperture Setting" in main menu to select corresponding measuring aperture.

d. After selecting aperture, the instrument will display "White and Black Calibration" interface. White and black calibration must be performed.

e. Replace completed.