Chapter 2: Making the Most of Your Camera

11

Compression

You’ve seen one way to reduce photo file size: lower the resolution at which you shoot the photo. You can also reduce file size by having the camera compress the photo file as it saves the file to the camera’s memory. Compres- sion consolidates similar information in the photo, and discards some informa- tion. With JPEG compression, for example, series of similarly colored pixels are grouped together and considered to be the same color. In the code that makes up the file, the color information for these grouped pixels only has to be listed once instead of hundreds, or even thousands, of times. This shortcut can reduce file size considerably. Taken to extremes, a photo in highly compressed JPEG format might be 95 percent smaller than the same photo in an uncompressed format.

Although compression does reduce file size, it also reduces photo quality. Slight to moderate compression might not noticeably reduce photo quality, but high compression produces visible areas of splotchy color called artifacts. Even with slight compression, artifacts become more pronounced each time the photo is saved and compression is applied.

File size and photo quality

Lowering resolution and increasing compression both reduce file size and photo quality. Bearing this in mind, you can use file size as a rough way to judge photo quality.

The left photo has been saved with lossless compression, so all of the image quality is retained. The photo on the right was saved with heavy JPEG compression—which is not lossless—and the compression significantly reduced the image quality.

Microsoft Picture It! Companion Guide

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Microsoft 702 manual File size and photo quality, Compression
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702 specifications

The Microsoft 702 is a powerful and versatile device that has garnered attention for its innovative features and cutting-edge technology. Designed with both personal and professional users in mind, it seamlessly blends performance with usability in a compact format.

One of the standout features of the Microsoft 702 is its high-resolution display. With vivid colors and exceptional clarity, users can enjoy an immersive visual experience whether they are working on spreadsheets, watching videos, or engaging in creative endeavors. The touch-sensitive interface adds another layer of convenience, allowing for intuitive interaction with applications and menus.

Under the hood, the Microsoft 702 is powered by a robust processor that allows for multitasking without lag. Users can run multiple applications simultaneously, making it an ideal choice for professionals who require efficiency and speed. Coupled with ample RAM and storage options, the device supports both heavy-duty tasks and extensive media consumption.

Another key characteristic of the Microsoft 702 is its connectivity options. Equipped with the latest Wi-Fi standards, users can enjoy lightning-fast internet speeds. Additionally, Bluetooth technology enables seamless integration with peripherals such as keyboards, mice, and headphones, enhancing the overall user experience.

Security is also a priority with the Microsoft 702. The device comes with built-in security features that protect user data and ensure privacy. Features such as biometric authentication and secure login options provide an added layer of defense against unauthorized access.

Battery life is another aspect where the Microsoft 702 excels. The device is designed to offer extended usage hours on a single charge, making it suitable for users who are always on the go. This mobility-friendly design is complemented by lightweight materials and a sleek form factor, allowing for effortless transport.

In conclusion, the Microsoft 702 stands out as a leading choice for those seeking a reliable and feature-rich device. With its high-resolution display, powerful processing capabilities, versatile connectivity options, enhanced security measures, and impressive battery life, it meets the diverse needs of modern users. Whether for work, leisure, or creative pursuits, the Microsoft 702 is poised to deliver an exceptional user experience.
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