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 CR3 images to PNG64 format. This tool works for both professionals and casual users. Convert your images to PNG64 in seconds.
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Canon RAW 3
The modern, efficient raw format for Canon's mirrorless era.
CR3 is the current raw image format used by Canon's EOS R mirrorless cameras and newer DSLRs. Introduced in 2018 with the EOS M50, it completely replaces the older CR2 format. The biggest innovation in CR3 is the introduction of 'C-RAW' (Compact Raw). This is a lossy compression option that reduces file sizes by up to 40% with virtually no visible loss in image quality. This allows photographers to shoot longer bursts, save hard drive space, and transfer files faster without sacrificing the flexibility of raw editing.
Unlike CR2, which was based on TIFF, CR3 is based on the CIFF (Camera Image File Format) structure, which is related to the MP4 container. This modern architecture allows for faster reading/writing and better metadata handling. CR3 files store 14-bit sensor data. In standard mode, it uses lossless compression. In C-RAW mode, it uses a smart lossy algorithm that prioritizes highlight and shadow detail while compressing midtones.
As sensor resolutions jumped from 20MP to 45MP+ (like in the EOS R5), file sizes became unmanageable. CR2 files were getting too big. Canon developed CR3 to solve this storage bottleneck, launching it alongside their push into full-frame mirrorless cameras.
PNG-64 (64-bit RGBA)
The ultimate format for transparency precision in VFX and compositing.
PNG-64 is the heavyweight champion of the PNG family. It combines the 16-bit per channel color depth of PNG-48 with a 16-bit alpha channel. This provides 65,536 levels of transparency, compared to just 256 levels in a standard PNG-32. This format is almost exclusively used in high-end visual effects (VFX), 3D rendering, and professional compositing. When you are rendering a CGI character to place into a movie scene, you need the edges to blend perfectly with the background, even after heavy color grading. PNG-64's 16-bit alpha channel ensures that semi-transparent pixels (like motion blur or hair) retain enough data to be manipulated without becoming jagged or discolored.
A PNG-64 file contains four channels: Red, Green, Blue, and Alpha. Each is 16 bits deep (16 x 4 = 64 bits). The 16-bit alpha channel is the defining feature. In an 8-bit alpha channel (PNG-32), a very faint shadow might only have 3 or 4 levels of transparency steps, leading to visible banding when contrast is increased. In a 16-bit alpha channel, that same faint shadow has hundreds of steps, ensuring it remains smooth under any processing.
Like PNG-48, PNG-64 has been part of the standard since the beginning but was largely ignored by the web community due to file size. It found its niche in the 3D and video production industries as a more accessible alternative to formats like EXR or TIFF for storing intermediate render passes.
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