Identify, Organize, and Save Your Photos: The Essential Guide for Diver Photographers

Capturing the beauty of the underwater world through photography is a rewarding passion. But after the excitement of diving and the satisfaction of taking stunning shots, comes a crucial step: managing these precious images. Knowing how to identify, classify, and save your photos is essential to easily find, share, and preserve them intact over time. This article guides you through the tools and methods to organize your digital photographic collection.

Understanding the basics: image formats, dimensions, and resolution

Proper management of your photos relies on understanding a few key technical concepts. It all starts with the digital camera (DSLR) you use and continues with the computer systems that will process and display your images.

Image formats: RAW, DNG, JPEG, and TIFF

DSLRs primarily use different image formats, each with its own characteristics:

• RAW file: the digital negative. Imagine the RAW file as the negative in analog. It’s a raw, uncompressed file directly from your camera’s sensor. It contains all the captured information without any processing. Each camera manufacturer has its own RAW format, which explains the multitude of existing formats.
  • Advantage: Offers maximum freedom in photo editing, allowing precise adjustments and optimal image quality.
  • Disadvantages: Very large files (over 100 MB per image for recent cameras), requiring specific software to « develop » and view them.
• DNG file: the universal RAW? Created by Adobe, DNG (Digital Negative) is an open and standardized RAW format. The goal was to provide a universal alternative to the numerous proprietary RAW formats. Although gaining popularity, it is mainly used by high-end smartphones and some camera manufacturers like Pentax, Samsung, and Leica.
  • Advantage: Image quality equivalent to RAW, with the potential for universality.
  • Disadvantage: Heavy file also requiring post-processing.
• JPEG file: the universal and compressed format. JPEG (Joint Photographic Experts Group) is the most widespread digital image format. It is compatible with almost all devices and software. Its compression, adjustable, always results in a quality loss, more or less visible, but definitive.
  • Advantage: Readable everywhere, adjustable compression.
  • Disadvantage: Irreversible quality loss due to compression.
• TIFF file: professional quality. TIFF (Tag Image File Format) is favored by professionals for its lossless or near-lossless compression. It supports layers and is compatible with major operating systems, making it an excellent choice for advanced editing.
  • Major disadvantage: Very large files, demanding on storage space.