BMP vs RAF
BMP Image 및 Fujifilm RAW의 상세 비교 — 파일 크기, 품질, 호환성 및 워크플로에 적합한 포맷 선택 가이드.
BMP Image
Raster & Vector ImagesBMP is an uncompressed raster image format native to Windows. Files are large but preserve exact pixel data with no compression artifacts. Rarely used on the web due to file size.
BMP 파일 정보Fujifilm RAW
Raster & Vector ImagesRAF is the RAW image format used by Fujifilm cameras, containing unprocessed sensor data with Fujifilm color science.
RAF 파일 정보장점 비교
BMP 장점
- Dead-simple format — trivially easy to read and write.
- Lossless and uncompressed — perfect bit-exact pixel storage.
- Universally supported in Windows applications since 1985.
- Supports 1, 4, 8, 16, 24, and 32-bit color depths.
RAF 장점
- Full 14-bit (most bodies) or 16-bit (GFX) sensor data.
- Film simulation recipe stored in metadata.
- X-Trans sensor produces distinctive moiré-free rendering.
- Supports every classic Fuji film-simulation look.
한계점
BMP 한계점
- Enormous file sizes — no meaningful compression in typical use.
- Not a web format — browsers support it but nobody serves BMPs over HTTP.
- No metadata support (no EXIF, no ICC profile in practice).
- Multiple header versions mean "a BMP" is ambiguous — parsers must handle several variants.
RAF 한계점
- X-Trans demosaicing is the hardest raw problem to solve cleanly.
- Third-party tools rarely match Fuji's own rendering.
- Proprietary with no official spec.
- GFX RAF files are massive (150+ MB per shot).
기술 사양
| 사양 | BMP | RAF |
|---|---|---|
| MIME type | image/bmp | image/x-fuji-raf |
| Extensions | .bmp, .dib | — |
| Compression | None (typical); RLE 4/8 bit (rare) | — |
| Color depths | 1, 4, 8, 16, 24, 32 bits per pixel | — |
| Byte order | Little-endian | — |
| Extension | — | .raf |
| Container | — | Fujifilm proprietary TIFF-like |
| Sensor arrays | — | X-Trans (APS-C), Bayer (GFX medium-format) |
| Bit depth | — | 14-bit (X-series); 16-bit (GFX) |
일반적인 파일 크기
BMP
- Small icon (32×32) 4 KB
- Screenshot (1920×1080) ~6 MB
- 4K image (3840×2160) ~25 MB
- Scanned A4 at 300 dpi ~25 MB
RAF
- 26 MP RAF (X-T4, X-T5) 40-55 MB
- 40 MP RAF (X-H2, X-T5 40MP) 60-80 MB
- 102 MP RAF (GFX 100 II) 150-220 MB
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자주 묻는 질문
BMP (Bitmap) is a raster image format developed by Microsoft for Windows. It stores images with no compression by default, resulting in large file sizes but pixel-perfect quality. It has been part of Windows since version 1.0.
BMP (Bitmap) is a raster image formato developed by Microsoft para Windows. It stores images com no compressão by default, resulting in large tamanho do arquivos mas pixel-perfect quality. It has been part of Windows since version 1.0.
BMP files open in Windows Paint, Photos, macOS Preview, GIMP, Photoshop, and virtually any image viewer. All Windows applications support BMP natively.
BMP arquivos abrir in Windows Paint, Photos, macOS Preview, GIMP, Photoshop, e virtually any image viewer. All Windows aplicativos support BMP natively.
PNG is better than BMP in almost every scenario since it provides lossless compression (smaller files), transparency support, and wider cross-platform use. BMP is mainly relevant for legacy Windows applications.
PNG is melhor que BMP in almost every scenario since it fornece sem perdas compressão (smaller files), transparência support, e wider cross-platform use. BMP is mainly relevant para legacy Windows aplicativos.