Convert Minolta Raw (.mrw) to Bitmap Image (.bmp) online for free. Fast, secure image conversion with no watermarks or registration.
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MRW is the proprietary RAW image format used by Konica Minolta digital SLR cameras, primarily the Maxxum 7D (Dynax 7D outside North America) and Maxxum 5D, as well as the earlier Minolta DiMAGE A-series compacts (A1, A2, A200). These cameras, produced between 2001 and 2006, captured 6-megapixel CCD sensor data in MRW files with 12-bit depth. Konica Minolta exited the camera market in 2006, transferring its camera technology to Sony, which launched the Alpha mount system.
Converting MRW to BMP produces an uncompressed Windows bitmap where every demosaiced pixel is stored as raw RGB data. BMP's universal compatibility ensures these files from a discontinued camera system remain accessible on any computer, even decades after Konica Minolta stopped producing cameras and supporting their proprietary format.
Konica Minolta has not updated MRW format support since leaving the camera market in 2006. Mainstream photo software is gradually dropping MRW support — Adobe has maintained limited compatibility, but many newer applications and operating systems cannot read MRW files natively. Converting to BMP ensures long-term accessibility of these legacy photographs.
BMP's uncompressed format is required by certain industrial, scientific, and legacy systems. While this is a niche use case for Konica Minolta photographs, the guaranteed compatibility of BMP makes it the safest format for any system that needs to read the converted images without depending on format-specific decoders.
The conversion reads the MRW file's proprietary container, which uses a Minolta-specific header structure (MRM tag) followed by a series of data blocks including the Bayer pattern sensor data, camera metadata, and thumbnail preview. LibRaw (via Sharp) interprets the 12-bit CCD sensor data, applies white balance multipliers and color matrix coefficients stored in the MRW header, and performs demosaicing. The output is written as a 24-bit Windows BMP. Given the 6 MP resolution of Maxxum/Dynax cameras, BMP files are a modest 18 MB each.
BMP applies zero compression, so no artifacts are introduced during the format conversion. The demosaiced output faithfully represents the Konica Minolta CCD sensor data at 8 bits per channel. The 12-bit RAW depth is reduced to 8-bit BMP, losing some shadow and highlight recovery range. The 6 MP sensor resolution is fully preserved. Despite being from a discontinued camera system, the CCD sensor data produces clean, pleasing color rendition that many photographers still appreciate.
| Device | MRW | BMP |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
MRW to BMP conversion rescues Konica Minolta photographs from an unsupported proprietary format into a universally compatible uncompressed bitmap. The modest 6 MP resolution produces manageable BMP files.
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| No |
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| Feature | MRW | BMP |
|---|---|---|
| Full Name | Minolta RAW | Bitmap Image |
| Extension | .mrw | .bmp |
| Best For | Konica Minolta | Uncompressed |