SRW to BMP Converter

What is SRW to BMP conversion?

SRW to BMP conversion transforms proprietary Samsung RAW files into the uncompressed BMP (Bitmap) image format. SRW is Samsung's RAW extension used by the NX mirrorless camera line: the flagship NX1 (28 MP APS-C back-illuminated sensor from 2014), the compact NX500 with the same sensor, the earlier NX300 and NX30 models, the miniature NX mini, and the premium EX-series compacts (EX1, EX2F). The container is built on TIFF and holds unprocessed 12- to 14-bit sensor data that requires demosaicing to produce a viewable image.

BMP (Bitmap Image File) is one of the oldest raster image formats, developed by Microsoft for the Windows operating system in 1985. BMP stores images as a pixel array, typically without compression, which provides exact pixel-for-pixel reproduction and maximum compatibility with older systems and specialized software environments.

SRW to BMP conversion is a niche task relevant to specific scenarios. First, integrating Samsung NX photographs into legacy automation, medical, or industrial equipment where BMP remains a standard input format. Second, preparing images for processing by scripts and computer vision algorithms requiring a simple file structure without complex format decoding. Third, supporting digital signage systems, info displays, and kiosks of older generations that only handle limited format sets.

Samsung discontinued the NX camera line in 2016. If you have photos from these cameras that need to integrate with specialized legacy systems, BMP provides guaranteed compatibility even with very old equipment.

Technical comparison: SRW vs BMP

SRW and BMP represent different concepts of image storage. SRW is a modern (for its time) proprietary RAW with compression. BMP is an archaic but simple and universal raster data storage format.

File size by Samsung camera model

The fundamental difference is conceptual. SRW holds raw sensor data requiring complex processing. BMP stores already-formed images in the simplest possible form: each pixel is written directly without compression algorithms or prediction. This makes BMP enormous in size but ideally compatible with any code that can read a raster array.

Why convert SRW to BMP?

Integration with legacy Windows systems

BMP has been Windows' native format since 1985. If your application runs on older Windows versions (95, 98, XP, Server 2003) or uses legacy GDI libraries, BMP opens without additional codecs. Samsung NX photos that need to display in such systems are best converted to BMP.

Preparation for computer vision algorithms

Many academic courses and scientific image processing projects use BMP as the standard input format. The file structure is so simple it can be parsed manually: after the header comes a row-by-row pixel array. This is convenient for educational purposes and for prototyping computer vision, machine learning, and image analysis algorithms.

Industrial and medical equipment

Some specialized systems (CNC machines, medical scanners, industrial cameras, diagnostic equipment) accept BMP as their primary or only input image format. If a Samsung NX photo will be used for calibration, reference comparison, or visual documentation in such systems, BMP conversion is required.

Digital signage and information displays

Older digital signage controllers, LED display boards, and information kiosks frequently work only with BMP. If a Samsung NX300 or NX500 photo must display on such a system, BMP is often the only guaranteed compatible option.

Archiving for systems without decompression support

In very rare cases, image storage in a format without any compression is required to eliminate possible decoding artifacts. Uncompressed 24-bit RGB BMP fulfills this requirement: every byte of image data is stored explicitly without algorithmic transformations.

Technical details of the conversion process

Bayer demosaicing

Samsung NX sensors use a Bayer color filter array. The conversion algorithm interpolates the color channels for each pixel from neighboring values. The quality of this step determines the sharpness and color accuracy of the final BMP. The NX1 and NX500 sensors (28 MP BSI on APS-C) require accurate demosaicing due to high pixel density.

White balance application

Basic conversion uses the white balance recorded by the camera in the SRW metadata. This value becomes part of the pixel data in the BMP output, with no possibility of subsequent correction without quality loss.

Linear-to-sRGB gamma correction

The linear sensor data is converted to sRGB with the standard 2.2 gamma curve applied. This is the standard color space expected by any BMP viewer program.

BMP encoding

The final step writes the data in BMP format. In the typical 24-bit RGB variant, each pixel occupies exactly 3 bytes (one for red, green, and blue channels). A header containing image size, color depth, and (optionally) palette information precedes the pixel array. No compression is applied: file size is directly proportional to image resolution.

Which SRW photos benefit most from BMP conversion

Images for legacy Windows systems

If the goal is displaying a Samsung NX photo in a program running on Windows 98, XP, or in specialized software using older Windows libraries, BMP is ideal. No additional codecs will be needed for the system to display the image correctly.

Reference images for scientific research

Academic image processing work often requires access to unprocessed pixel data. BMP provides direct access to each pixel without complex decoding algorithms, simplifying algorithm implementation and ensuring result reproducibility.

Calibration images for equipment

If a Samsung NX1 or NX500 photo is used as a reference for calibrating industrial equipment or medical devices, BMP guarantees that each pixel will be interpreted by the system exactly as it was recorded, without algorithmic transformations introducing variability.

Images for embedded systems

Microcontrollers and embedded systems with limited resources often cannot decode complex formats like JPEG or PNG. BMP with its simple structure can be read with minimal code, making it suitable for embedded displays and visualization systems.

Advantages of BMP for specific tasks

Absolute structural simplicity

BMP is one of the simplest raster formats in existence. A header plus a linear pixel array - that is all. No compression, no blocks, no quantization. This makes BMP ideal for systems requiring minimal parsing complexity.

Exact pixel preservation

In uncompressed mode (standard 24-bit RGB), each pixel is preserved exactly. No loss, no artifacts: what comes out of demosaicing is what goes into BMP. This matters for scientific and technical applications where even minimal data changes are unacceptable.

Universal Windows support

BMP has been Windows' native format since 1985. Any program on Windows, from MS Paint in Windows 95 to modern applications, opens BMP without additional installations. For integrating Samsung NX photos into Windows infrastructure, BMP is a no-fail choice.

Compatibility with legacy hardware

Old printers, scanners, digital signage, and industrial systems often support BMP even in their earliest versions. When compatibility with legacy hardware is required, BMP is frequently the only working option.

Limitations and important considerations

Enormous file sizes

Uncompressed BMP produces gigantic files. A Samsung NX1 photo (28 MP, 6480x4320) in 24-bit RGB BMP occupies approximately 80-100 MB. This is 2x larger than the original SRW and 10-15x larger than a high-quality JPG of the same image. For mass archive storage, BMP is utterly impractical.

No EXIF support

BMP does not store EXIF metadata. All standard information about the camera, lens, capture date, shutter speed, ISO, focal length, and GPS coordinates is lost during conversion. If cataloging in photo organizers matters, BMP is not the right format.

Not native in modern browsers

While BMP is supported by many browsers, its use on web pages is impractical due to enormous file sizes. For web publishing, choose JPG, WebP, or AVIF instead.

Archaic format

BMP is 1985 technology designed for the capabilities of that era. Modern raster formats (TIFF, PNG, WebP, AVIF) are substantially more efficient in compression and richer in features. BMP use is justified only in specific niche scenarios.

Basic decoding limitations

This service performs basic SRW decoding with default processing parameters: the white balance recorded by the camera is applied, standard sRGB gamma correction is used, and Bayer demosaicing runs automatically. Manual white balance adjustment, exposure compensation, highlight and shadow recovery, tone curves, noise reduction, and Samsung Picture Wizard profile application are not available through this converter. For full RAW processing with control over all parameters, use Adobe Lightroom, Capture One, RawTherapee, or ON1 Photo RAW.

Always preserve SRW originals

BMP is a destination format for a specific task, not a replacement for RAW. After SRW to BMP conversion, you have a ready raster image without full RAW-level editing flexibility for future work. Keep original SRW files on separate storage for potential future reprocessing. This is especially important for Samsung NX archives since the cameras are discontinued.

Samsung NX and BMP: technical context

Samsung NX1 and NX500 cameras have 28 MP BSI-CMOS sensors with 6480x4320 pixel resolution. A 24-bit RGB BMP from such an SRW occupies approximately 84 MB (6480 * 4320 * 3 bytes). NX300 and NX30 (20 MP, 5472x3648) produce 60 MB BMPs; EX-series (12 MP, 4000x3000) yield approximately 36 MB.

These sizes make BMP impractical for routine work with photo archives. BMP use is justified only in niche scenarios where compatibility with legacy systems or file structure simplicity matters more than file size.

Worth noting: modern Samsung Galaxy smartphones do not produce SRW files. In Pro Mode they save RAW as DNG (Adobe's open format). SRW appears only in files from NX and EX-series cameras, both discontinued in 2016.