Convert BAY to BMP — Free Online Converter
Convert Casio Raw (.bay) to Bitmap Image (.bmp) online for free. Fast, secure image conversion with no watermarks or registration....
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Upload your .bay file by dragging it into the upload area or clicking to browse.
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About BAY to BMP Conversion
BAY is the proprietary RAW image format used by Casio digital cameras, primarily the QV and Exilim series. Casio cameras such as the QV-3000, QV-4000, QV-5700, and early Exilim models recorded unprocessed sensor data in .bay files, preserving the full bit depth captured by the CCD sensor before any in-camera JPEG processing. The format stores Bayer pattern data alongside Casio-specific metadata including white balance coefficients, lens information, and exposure parameters.
Converting BAY to BMP produces an uncompressed Windows bitmap where every demosaiced pixel is written as raw RGB data without any compression. BMP is the simplest raster format still in widespread use, readable by every Windows application from Paint to specialized industrial software. This conversion extracts the maximum information from the Casio sensor data and delivers it in a universally compatible, uncompressed format.
Why Convert BAY to BMP?
Casio discontinued its digital camera business in 2018, and BAY files are not supported by most modern image editing applications. Adobe Lightroom, Capture One, and other mainstream RAW processors have limited or no support for the BAY format. Converting to BMP ensures that your Casio camera photographs remain accessible and viewable on any computer without requiring specialized legacy software.
BMP's uncompressed nature makes it ideal for archival purposes when you want to preserve every pixel of the demosaiced output without any compression artifacts. Industrial systems, scientific instruments, and legacy Windows applications that cannot decode modern compressed formats will accept BMP natively, making it the safest format for compatibility with constrained environments.
Common Use Cases
- Preserve legacy Casio QV-series photographs by converting to universally readable BMP format
- Feed Casio camera output into machine vision or industrial inspection systems requiring BMP input
- Create uncompressed reference copies of Casio Exilim RAW files for archival documentation
- Prepare BAY files for legacy Windows applications that only accept uncompressed bitmap data
- Generate uncompressed pixel data from Casio sensor captures for scientific analysis tools
How It Works
The conversion pipeline reads the BAY file's proprietary container, extracts the CCD sensor's Bayer pattern data, and performs demosaicing using LibRaw (invoked internally by Sharp). Casio-specific metadata including white balance multipliers, color matrix coefficients, and black level calibration values are applied during the RAW interpretation step. The demosaiced RGB image is then written as a 24-bit Windows BMP file with bottom-up row ordering. Because Casio QV and Exilim cameras typically had 3-6 megapixel sensors, the output BMP files are relatively modest at 9-18 MB each.
Quality & Performance
BMP applies zero compression to the output, so no artifacts are introduced during the format conversion step. The image quality depends entirely on the demosaicing algorithm used to interpret the Casio sensor's Bayer filter array. Because Casio cameras from the BAY era used CCD sensors with 3-6 megapixel resolution, the output is lower resolution than modern cameras but faithfully represents the full data captured by the sensor. The RAW editability of the original BAY file is lost once converted.
Device Compatibility
| Device | BAY | BMP |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | No |
Tips for Best Results
- 1Convert BAY files sooner rather than later — Casio RAW support is increasingly rare in modern software
- 2For general archival purposes, consider PNG instead of BMP for lossless quality at smaller file sizes
- 3BAY files from Casio cameras are relatively small (3-6 MP), so BMP output will be manageable at 9-18 MB
- 4Back up original BAY files before conversion — once converted to BMP, the RAW editing flexibility is lost
- 5If batch converting an old Casio photo collection, check that all files have the .bay extension and are not corrupted
Converting BAY to BMP rescues legacy Casio camera photographs from an unsupported proprietary format into a universally compatible uncompressed bitmap. The output files are modest in size given the lower sensor resolutions of BAY-era cameras.