RAW vs TIFF vs JPEG: Understanding Image Formats

A RAW file is not a finished image — it is a data dump from the camera sensor. When you shoot RAW, the camera records the unprocessed light data captured by each pixel, along with metadata about the shot (ISO, shutter speed, aperture, white balance setting). No sharpening, noise reduction, or colour processing is applied. The file requires a dedicated RAW converter to produce a viewable image.

Why RAW is not a single format

There is no universal ".raw" standard. Every major camera manufacturer uses a proprietary RAW format: Canon uses `.CR2` and `.CR3`, Nikon uses `.NEF`, Sony uses `.ARW`, Fujifilm uses `.RAF`, Olympus uses `.ORF`. Adobe created the open `.DNG` (Digital Negative) format as a universal RAW container, and many cameras now offer DNG as an option alongside their proprietary format. The Quasar Tools converter supports conversion to and from DNG, NEF, ARW, and RAF formats.

• Bit depth: 12–14 bits per channel (versus 8 bits in JPEG)
• Dynamic range: full sensor dynamic range preserved — typically 12–14 stops
• File size: 3–10× larger than an equivalent JPEG
• Viewable without software: no — requires Lightroom, Capture One, Darktable, or a RAW viewer
• Editable white balance: yes — white balance is metadata, not baked in
• Lossless: yes — the sensor data is recorded without compression loss

TIFF (Tagged Image File Format) is a mature, widely-supported raster image format designed for professional-grade image storage and exchange. Unlike RAW, a TIFF is a fully processed, display-ready image — you can open it in any image viewer, browser, or design application without special software. It is the standard delivery format for print workflows and the preferred archival format for processed photographic work.

What TIFF stores and how it compresses

TIFF supports multiple colour modes (RGB, CMYK, LAB, Grayscale), multiple bit depths (8-bit, 16-bit, 32-bit per channel), and several compression options. The most common is LZW compression — a lossless algorithm that reduces file size without discarding any image data. Uncompressed TIFF files are enormous; LZW-compressed TIFFs are significantly smaller while remaining perfectly lossless. TIFF also supports layers (in Photoshop TIFF), transparency, and embedded ICC colour profiles.

Where TIFF is used

• Print production — the industry standard for delivering files to print shops, publishers, and prepress workflows
• Medical imaging — DICOM-based systems often use TIFF derivatives for scan storage
• Archival photography — museums, archives, and stock agencies store master images as TIFF
• Post-processing exports — final export from Lightroom or Photoshop before delivering to a client
• Document scanning — high-resolution document scans are often stored as multi-page TIFF files

JPEG (Joint Photographic Experts Group) is the dominant format for photographic images on the web and in consumer cameras. It achieves small file sizes through lossy compression — an algorithm that discards image data the human visual system is least likely to notice. A high-quality JPEG looks nearly identical to the original while being 5–20× smaller than an equivalent TIFF. This trade-off made JPEG the default format for digital photography from the 1990s onward.

How JPEG compression works

JPEG divides the image into 8×8 pixel blocks and applies a Discrete Cosine Transform (DCT) to each block, converting pixel values into frequency coefficients. The algorithm then quantises these coefficients — discarding high-frequency detail that is difficult to perceive. At quality 90 (out of 100), the result is visually lossless for most subjects. At quality 60–70, the compression artifacts become visible in smooth gradients, fine text, and sharp edges. Each subsequent save-and-re-compress cycle degrades the image further.

When JPEG is the right choice

JPEG is the right format when file size matters more than future editability — web images, social media posts, email attachments, and consumer photo prints all fall into this category. It is also the right format when images need to be immediately viewable without any conversion step. The JPEG Compressor lets you control the compression level directly, balancing file size against visual quality for any specific use case.

Shoot RAW to capture everything. Edit in TIFF to preserve everything. Export JPEG to share everything.

The three formats sit at different points on the quality-vs-accessibility spectrum. Here is a direct comparison across the dimensions that matter most for practical imaging workflows.

The editing headroom difference

The most practical difference between RAW and JPEG is editing headroom. When you pull up shadows on a JPEG by 3 stops, you reveal compression artifacts and colour banding. The same adjustment on a RAW file reveals clean, grain-like noise with smooth tonal transitions. RAW files have 4–6 additional stops of recoverable shadow and highlight detail compared to the 8-bit JPEG the camera would generate from the same shot.

No — TIFF and RAW are not the same format, and they serve different roles in an imaging workflow. This is one of the most common points of confusion among photographers moving from consumer to professional workflows. Understanding the distinction clarifies why both formats can exist in the same project.

The key structural differences

A RAW file stores unprocessed sensor data — it is the raw electrical signal values from each photosite on the sensor before any demosaicing, noise reduction, or colour processing. A TIFF stores fully processed pixel data — RGB values for every pixel that are ready to display on a screen or send to a printer. Converting a RAW file to TIFF requires running it through a RAW converter (Lightroom, Capture One, Darktable) that applies demosaicing and your chosen colour rendering. The TIFF to RAW converter handles the reverse path for workflow purposes.

Why they are confused

The confusion arises because both TIFF and RAW are associated with "maximum quality" and both are used by professionals. Both are lossless (RAW in the sense that no compression degrades the sensor data; TIFF in the sense that LZW compression is perfectly reversible). Both are large files compared to JPEG. But they belong to different stages of the image processing pipeline: RAW is a capture format, TIFF is a processing and delivery format.

When to use each

• Use RAW when shooting — if your camera supports it and you plan to edit
• Use TIFF when exporting your final edit — for print delivery, client handoff, or archival storage
• Use both in the same project — RAW as the source of truth, TIFF as the processed deliverable
• Never use RAW for web delivery — no browser can render a .CR2, .NEF, or .ARW file
• Never use TIFF as a shooting format — cameras do not produce TIFF natively in the same sense

Two of the most-searched questions about RAW are whether PNG and BMP are RAW formats. The short answer is no — but the reasons why are worth understanding, because they clarify what makes RAW unique among image formats.

Is PNG a RAW file?

PNG (Portable Network Graphics) is a lossless raster format designed for screen graphics, digital illustrations, and web images with transparency. It stores fully processed RGB (or RGBA) pixel data using deflate compression. PNG has no concept of camera sensor data, colour filter array patterns, or RAW metadata. The only characteristic PNG shares with RAW is losslessness — both preserve all image data without compression artifacts. But a PNG is a display-ready file; a RAW is not. You can convert PNG to RAW format for workflow compatibility purposes, but the result is a synthetic RAW container, not real camera sensor data.

Is BMP a RAW file?

BMP (Bitmap) is a Microsoft Windows raster format that stores processed pixel data in an uncompressed (or RLE-compressed) structure. It is even further from RAW than PNG — BMP has no compression, no metadata standard, no colour profile embedding, and no professional workflow support. BMP files are large, poorly supported in modern applications, and have been largely superseded by PNG for lossless screen graphics and TIFF for professional lossless photography. BMP is occasionally encountered in legacy Windows applications and as a clipboard format, but it has no role in a modern imaging workflow.

WebP, AVIF, HEIC — modern formats vs RAW

WebP, AVIF, and HEIC are modern compressed formats optimised for digital delivery. None of them are RAW formats. WebP and AVIF support both lossy and lossless modes and are designed for web use where small file size is critical. HEIC (High Efficiency Image Container) is Apple's default camera format on iPhone — it is technically a compressed format using H.265 intra-frame encoding, not RAW sensor data. iPhones can shoot ProRAW (a DNG-based format), but standard HEIC files from an iPhone are processed, compressed images analogous to JPEG.

The right format depends on where you are in the image workflow and what the image will be used for. Here is the practical decision framework used by professional photographers and imaging teams.

Format selection by use case