Viewing RGB values and pixels, About the histogram

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Viewing RGB values and pixels

You can view the RGB values and pixel color for any spot in a color or grayscale image using the RGB meter.

To view the RGB values and pixel color for slides, negatives, or other transparent items, use "Viewing RGB values and pixel color" on page 85.

To view the RGB values and pixels

1On the Advanced menu, click Adjust Exposure.

2Move the pointer over the image. The RGB values and pixel color appear in the RGB meter.

RGB

valuesPixel color

Note: Do not click while the eyedropper pointer is over the image unless you want to change the setting for highlight or shadow.

3Click the same eyedropper button again. The RGB meter dims and the cursor returns to normal.

Scanning from HP Precisionscan Pro

About the histogram

The histogram is a graph of the distribution of pixels in the selection area. The magenta line represents the current setting for shadow. The red line represents the current setting for highlight. The midtone setting is not represented.

Shadow				Highlight

The turquoise line appears in the histogram when either eyedropper cursor is positioned over the image. This line shows you where in the histogram the pixels in that area of the image occur.

Where pixels in the image under the eyedropper fall

The histogram represents pixel distribution in the preview image, not in the final scanned image. Changing the selection area changes the histogram. Changing the setting for highlight or shadow does not change the histogram.

5400C, 4400C specifications

The HP 4400C and HP 5400C are well-regarded models in the realm of HP’s multifunctional printer offerings, establishing themselves as reliable devices for both personal and small office use. These printers blend advanced technology with user-friendly features, setting high standards in the printing industry.

One of the standout features of the HP 4400C is its impressive print resolution, capable of producing vibrant and sharp documents and images at up to 1200 x 1200 dpi. This ensures that every printout boasts clarity and detail, making it an excellent choice for professionals who demand high-quality output in their everyday tasks. The device supports a variety of paper sizes and types, providing versatility for different printing needs.

In terms of printing speed, the HP 4400C achieves output rates of up to 24 pages per minute for black-and-white documents, and approximately 20 pages per minute for color prints. This rapid performance helps enhance productivity, especially in busy office environments. The HP 5400C, on the other hand, offers similar speeds but is enhanced with features that cater to larger workgroups, making it ideal for more demanding printing environments.

Both models support versatile connectivity options, including USB and Ethernet, allowing seamless integration into existing networks. The intuitive control panel and LCD screen enhance user experience, making it easy to navigate settings and monitor print jobs.

Security is also a crucial aspect of these printers, with options for secure printing and job encryption, ensuring sensitive documents remain confidential. The HP 4400C and 5400C are equipped with HP’s advanced paper handling capabilities, featuring multiple input trays that can handle various media types, including envelopes and labels.

In summary, the HP 4400C and HP 5400C multifunction printers offer a robust combination of high-quality printing, speed, and versatility. Their advanced features make them suitable for a range of workflows, from personal use to larger organizational needs, thereby catering to a broad audience. By integrating modern technologies and user-oriented designs, these printers stand out as reliable choices for efficient document management and production.

HP 5400C Viewing RGB values and pixels, About the histogram, To view the RGB values and pixels

Models: 5400C 4400C