What is CPT?

Corel PHOTO-PAINT (CPT) is the native project format for Corel PHOTO-PAINT, preserving layers, masks, and editing history.

What is RAW?

Camera RAW is a file format containing unprocessed sensor data captured directly from a digital camera sensor, providing maximum flexibility for professional photo editing.

When Should You Use CPT vs RAW?

CPT vs RAW: Key Differences

• •CPT uses lossless compression while RAW uses lossless compression — both take the same approach to file size management.
• •Neither format changes compression philosophy — both are lossless compression — so any size differences are due to encoding efficiency, not a shift in quality approach.
• •Transparency: N/A - RAW is for photographs only
• •File sizes: CPT files typically range Large due to layer data and RAW files 20-50MB per photo depending on camera.
• •CPT is optimized for corel image editing, photo manipulation while RAW is designed for professional photography, post-processing, editing — choose based on your specific workflow needs

Advantages of CPT

• ✓CPT compresses data using lossless methods, keeping file sizes manageable for Corel image editing, photo manipulation.
• ✓Industry-wide support means CPT files open anywhere — from legacy systems to the latest devices.
• ✓Lossless quality makes CPT the gold standard for archival and master copies.
• ✓From Adobe Photoshop to open-source alternatives, CPT works out of the box.

Advantages of RAW

• ✓At its core, RAW relies on lossless encoding — a design choice that makes it perfect for Professional photography, post-processing, editing.
• ✓You won't run into compatibility issues with RAW — it's a universal standard across platforms.
• ✓File size management with RAW: larger files guaranteed to match the original exactly.
• ✓Every major application in the Professional photography, post-processing, editing space supports RAW natively.

Common Use Cases for CPT to RAW Conversion

• Video thumbnail creation
• Certificate and badge design
• Websites and online content
• Print materials and publications
• Social media posts and ads
• Digital photography and editing

Industry Applications

Best Practices for CPT to RAW Conversion

• →Before converting CPT to RAW, decide whether you need maximum quality or smallest file size — this determines which format truly fits
• →Save a master copy in a lossless format before converting to RAW — you cannot recover detail lost during lossy compression
• →Check the color profile: CPT images may use a wider gamut than RAW supports, causing a visible shift after conversion
• →Resize images to the final display dimensions before converting — this avoids unnecessary processing of oversized files
• →Run a single test conversion first to verify quality meets your standards
• →Strip unnecessary metadata to reduce file size after conversion

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Troubleshooting CPT to RAW Conversion

• !Converting CPT to RAW gives blurry output → increase the quality setting before conversion
• !Colors look different in RAW than CPT → check color profile mismatch (sRGB vs Adobe RGB)
• !File size changed more than expected → RAW uses different compression, file size differences of 2-5x are normal
• !Transparent areas in CPT turned white in RAW → RAW may not support transparency

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