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DNG (Digital Negative) is a raw image format standard developed by Adobe, aiming to provide a unified, open, and long-term preservation format for RAW images. It has been adopted by multiple camera manufacturers and is widely used in professional photography. Compared to traditional proprietary RAW formats, DNG offers higher compatibility and better long-term preservation.

DNG files support lossless compression and embedded metadata, ensuring image quality and integrity. They also support various color depths (such as 12-bit or 14-bit), making them suitable for high-quality image processing. Recommended editors include Adobe Lightroom and Adobe Camera Raw, which provide powerful image processing tools and full support for DNG files.

DNG is the preferred format for many camera manufacturers and photographers due to its superior image quality, broad compatibility, and long-term preservation advantages.

• 开发团队： Adobe
• 首发时间： 2004
• 相关链接：
https://en.wikipedia.org/wiki/Digital_Negative https://helpx.adobe.com/camera-raw/using/introduction-camera-raw.html https://rawtherapee.com/ https://imagemagick.org/script/formats.php

ICO is a specialized file format used by Windows to store icons for applications, folders, and websites. An ICO file can contain multiple images of different sizes and color depths, such as 16×16, 32×32, and 48×48, to ensure proper display across different interfaces. It supports transparency and can use lossless or lossy compression for optimization. In addition to Windows, ICO files are commonly used as favicons for websites. Recommended editors include IcoFX and GIMP, while ImageMagick can be used for format conversion.

How to open and edit an ICO file?

ICO files can be opened and edited using various tools on Windows and macOS. Here are some recommended tools: - Viewers and Editors: - IcoFX: A dedicated ICO editor with batch processing and high-quality icon creation features. - GIMP: An open-source image editor that supports ICO files for modification and export. - Adobe Photoshop: Can open and edit ICO files with the appropriate plugin installed. - Windows File Explorer: Double-clicking an ICO file allows previewing it directly in Windows. - Conversion Tools: - ImageMagick: A command-line tool that converts PNG, JPEG, and other formats to ICO or extracts icons from ICO files. - Online conversion tools: Services like CloudConvert and ConvertICO allow converting ICO files to PNG, SVG, and other formats. When creating an ICO file, it's recommended to use a 256×256 PNG image for conversion to ensure high-quality display on modern high-resolution screens.

• 开发团队： Microsoft
• 首发时间： 1985
• 相关链接：
https://en.wikipedia.org/wiki/ICO_(file_format) https://icofx.ro/ https://www.gimp.org/ https://imagemagick.org/script/formats.php