Which format preserves unprocessed sensor data and is ideal for editing in commercial photography?

• A. RAW preserves unprocessed sensor data and is ideal for editing.
• B. TIFF preserves unprocessed data but is primarily used for archival purposes.
• C. JPEG is compressed and suitable for web proofs.
• D. PNG is primarily used for web graphics and is not ideal for final editing.

Answer: (A)

When you need the most flexibility in post-production, capturing unprocessed sensor data in RAW is essential. RAW files contain the data straight from the sensor with minimal in-camera processing and greater bit depth, so you can adjust exposure, white balance, color, and tonal range without sacrificing image quality. This preserves details in shadows and highlights and reduces the risk of banding or artifacts that can come from editing already processed or compressed formats. In commercial workflows, this “digital negative” approach lets you refine the look during editing and only finalize a deliverable after you’ve fully explored the adjustments.

Other formats don’t offer the same editing latitude. JPEG has already been processed and compressed, which limits how much you can push exposure and color without quality loss. PNG is geared toward web graphics and isn’t designed for the high-bit-depth editing common in professional photography. TIFF can be high-quality and flexible for editing or archival, but it’s typically a processed export rather than the raw sensor data, so it doesn’t provide the same headroom or the ability to revert to the original sensor state as RAW.