Convert Olympus RAW Format (.orf) to Bitmap Image (.bmp) online for free. Fast, secure image conversion with no watermarks or registration.
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ORF files are proprietary RAW images captured by Olympus and OM System cameras, including the popular OM-D E-M1 series, PEN-F, and the newer OM-1 mirrorless bodies. These files store unprocessed 12-bit sensor data from Micro Four Thirds sensors — typically around 20 megapixels — along with Olympus-specific metadata such as Art Filter presets, in-body image stabilization (IBIS) telemetry, and multi-shot High Res data. Because ORF is a proprietary RAW format, most applications outside dedicated photo editors cannot open it directly.
BMP (Bitmap) is one of the oldest raster image formats, dating back to early Windows releases. It stores pixel data in an uncompressed grid, making it universally readable by virtually every image viewer, operating system, and legacy application. Converting ORF to BMP gives you a fully demosaiced, color-corrected image that any system can display without specialized RAW processing software.
Olympus ORF files require RAW-aware software like Olympus Workspace, Adobe Lightroom, Capture One, or darktable to open and edit. If you need to view your Micro Four Thirds captures on a machine without these tools — a public kiosk, an older Windows workstation, or an embedded display system — BMP provides zero-dependency image viewing. Every version of Windows since 3.0 renders BMP natively.
BMP is also useful when you need pixel-perfect, uncompressed output for technical applications. Scientific imaging, machine vision pipelines, and legacy print workflows sometimes require BMP because it guarantees no compression artifacts alter the pixel data. When converting from ORF, the RAW sensor data is demosaiced and rendered at full resolution, then saved with every pixel preserved exactly as computed.
The conversion reads the 12-bit Bayer-pattern sensor data from the ORF container, applies demosaicing to reconstruct full-color RGB pixels, and performs basic color correction using the camera's white balance metadata. The output is written as an uncompressed 24-bit BMP (8 bits per channel, RGB). A 20-megapixel ORF file (~15 MB) produces a BMP of approximately 57 MB due to the uncompressed storage format. No sharpening or noise reduction is applied beyond the standard demosaicing interpolation.
BMP output preserves the full spatial resolution of the Olympus sensor after demosaicing. Since BMP is uncompressed, there are no encoding artifacts — every pixel value is stored exactly as computed during the RAW processing step. However, the conversion from 12-bit RAW to 8-bit BMP discards the additional tonal depth available in the original ORF data. For maximum dynamic range preservation, consider TIFF (16-bit) instead.
| Device | ORF | BMP |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Converting ORF to BMP produces an uncompressed, universally compatible image from your Olympus RAW captures. While the files are large, the format guarantees perfect pixel fidelity and works on any system, making it ideal for legacy compatibility and technical imaging requirements.
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| Funktion | ORF | BMP |
|---|---|---|
| Fullstandigt namn | Olympus RAW Format | Bitmap Image |
| Filandelse | .orf | .bmp |
| Bast for | Olympus cameras | Uncompressed |