Dynapik offers a free online tool to change image types - no need to download anything. It's quick and easy to use. You can change your CRW images to PSB format. This tool works for both professionals and casual users. Convert your images to PSB in seconds.
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Canon RAW (Legacy)
The ancestor of modern Canon raw formats.
CRW (Canon Read/Write) is the original raw image format used by early Canon digital cameras, such as the EOS D30, D60, 10D, and the original Digital Rebel (300D). It predates the CR2 format. Unlike modern raw formats that are typically TIFF-based, CRW uses the CIFF (Camera Image File Format) structure. It often comes paired with a .thm (thumbnail) file, which contains the preview image and metadata.
CRW files store raw sensor data, usually 10-bit or 12-bit. The file structure is quite different from CR2/CR3, organizing data into a heap of 'chunks'. Because it is a legacy format, it does not support modern features like GPS tags or advanced lens profiles natively, though software can apply them in post.
CRW was used from 1997 until 2004. It was replaced by CR2 because CRW had limitations in file size and metadata extensibility.
Photoshop Big
The 'Large Document Format' for managing gigapixel images.
PSB (Photoshop Big) is an extension of the PSD format designed to break the barriers of the 2GB file size limit and 30,000 pixel dimension limit of standard PSD files. It is structurally almost identical to PSD but uses 64-bit offsets inside the file to support massive files up to 4 Exabytes (theoretically) and 300,000 pixels in width/height.
Internally, a PSB file mirrors the block structure of a PSD (Header, Color Mode, Image Resources, Layer and Mask Info, Image Data). The key difference is the bit-width of length integers; PSB uses 8 bytes (64-bit) where PSD uses 4 bytes (32-bit) for describing file offsets and dimensions.
Introduced in Adobe Photoshop CS (v8.0) in 2003 to support the growing needs of astronomical imaging, billboard printing, and HDR photography.
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