Sending Large .RAW Images to Clients: A Photographer's Guide

High-resolution mirrorless cameras capture incredible detail, but they also create a huge problem for the final handoff. A single uncompressed RAW file from a 61-megapixel Sony A7R V averages about 130MB. If you multiply that by the 2,500 to 4,000 images you might shoot at a wedding, you're looking at between 325GB and 520GB for a single event. A professional photographer can generate between 60GB and 150GB of RAW data in a single day of shooting, making efficient delivery essential.

Sending that much data involves more than just hitting an upload button and walking away. You need a system that can handle long transfers without failing halfway through or timing out. Standard cloud services often struggle when they have to manage thousands of individual files. For professional photographers, this delivery is the final touchpoint with a client. A slow or buggy download experience can undo all the hard work you put into the shoot.

You generally have three choices: one-time transfer services, persistent cloud storage, or specialized galleries. Each has trade-offs in speed and cost. The priority is making sure the client gets perfect, bit-for-bit copies of your original sensor data as fast as possible.

Check out our guides on Fast.io Workspaces, Fast.io Collaboration, and Fast.io AI for more details on these workflows.

Most consumer cloud platforms like Google Drive or Dropbox were built for documents and occasional photos, not the massive bulk transfers that pro photographers deal with every day. The biggest issue is often the "zipping" process. When a client tries to download a folder full of .NEF or .ARW files, many services try to compress them into a ZIP archive on the fly. This usually leads to server errors, incomplete files, or downloads that just stop for no reason.

Providers also tend to throttle large transfers. They prioritize smaller files to keep their networks moving, which can turn a short upload into an all-night wait. If your internet connection drops for even a second, basic services often can't resume the transfer, forcing you to start all over again.

Then there's the problem of previews. While these services don't change your original RAW data, the browser previews they generate are often low-quality. If a client sees a pixelated version of your work before they download it, they might think the files are broken. Keeping your work looking professional from start to finish is a top priority.

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When you're moving massive projects, specialized transfer services or high-performance workspaces are your best bet. Services like Smash or WeTransfer Premium are popular because they're built for large media. But if you're doing this every day, a dedicated workspace like Fast.io adds more speed and automation to your routine.

Fast.io uses the kind of infrastructure usually reserved for broadcast media. Unlike a standard cloud drive, it's designed for "bulk" tasks. You can upload a huge folder of RAW files and the system manages the heavy lifting without the usual lag. For photographers moving hundreds of gigabytes, this can save hours of wait time.

The URL Import tool is particularly helpful. If your RAW files are already sitting in a temporary spot like Google Drive, you can pull them directly into a Fast.io workspace without using any of your local bandwidth. This server-to-server transfer is nearly instant. Once they're imported, you can share a high-speed download link through a professional, branded interface.

Organization is just as important as the transfer itself. A messy folder structure makes it hard for clients to be sure they received everything. We recommend a hierarchy that mirrors the shoot. For a wedding, you might organize folders like "Ceremony_RAW," "Reception_RAW," and "Portraits_RAW."

Before you upload, try grouping large batches of files into several smaller ZIP archives instead of one giant file. This "chunking" strategy makes the download easier for clients with slower internet. If one chunk fails, it's much easier to retry that piece than a massive archive. Use simple names like ProjectName_Part1.zip to keep things organized.

It’s also a good idea to include a "Read Me" file in the main folder. Explain what the RAW formats are and what software the client needs to open them, like Lightroom or Capture One. Providing this context up front cuts down on support questions and shows you're a professional.

To ensure a smooth delivery, you need a workflow that avoids data corruption. First, always perform a checksum verification before you upload. This confirms the data on your drive is perfectly intact. Software like Hedge or OffShoot can do this automatically when you offload your memory cards, providing a 'hash' that proves the file is identical to the original.

Next, set up your delivery environment. In a Fast.io workspace, you can create a 'Client Handoff' folder with your own branding. If your files are already in another cloud service, use the URL Import tool to move them directly to your delivery workspace. This bypasses your local internet entirely. If you're uploading from your studio, use a wired Ethernet connection. Even fast Wi-Fi can suffer from minor packet loss that triggers retries, which slows down a large transfer.

Once the transfer is finished, double-check the total folder size in your workspace against your local drive. Finally, generate a secure, branded sharing link. We recommend using password protection and setting an expiration date. Send the link with a professional email that summarizes the shoot, including the total size and a quick note on the software needed. This structured approach makes sure the client feels supported and the handoff works the first time.

To understand how your delivery method affects your day, look at the math. A 100GB project involves a massive volume of data. On a home fiber connection with a 50Mbps upload speed, the absolute minimum time to upload 100GB is about 4 hours and 26 minutes. In reality, network overhead usually pushes that closer to 5 or 6 hours.

Your hardware and connection type also matter. Uploading 100GB over 2.4GHz Wi-Fi can take 12 hours or more because of interference. Switching to a Cat6 Ethernet cable can cut this down to your ISP's actual limit. High-performance services like Fast.io can use nearly 90% of your available bandwidth, while standard cloud storage often peaks at a fraction of that because they throttle your connection.

Download speed is just as important for the client. If they have a 200Mbps connection, they should be able to get 100GB in about 66 to 68 minutes. But if the hosting service limits download rates to protect its own network, that same client could be stuck waiting for hours. Using tools built on global edge networks ensures the data comes from a server near the client. This reduces the "hops" the data takes across the internet, leading to a faster, more stable connection. For international clients, this is often the difference between a smooth handoff and a failed one.

The delivery process is part of the overall experience you provide. A simple link to a generic folder can feel a bit impersonal. Whenever possible, use a branded portal with your logo and colors. It looks more professional and makes the experience feel consistent from the initial booking to the final handoff.

Good communication also helps. Once your upload is finished, send an email with the download link, the total size, and an expiration date. This gives the client a clear reason to download and back up their files promptly. We recommend keeping links active for at least several weeks so they have plenty of time to manage the storage.

Think about the post-handoff workflow as well. If you're sending RAW files to an editor, speed is usually the top priority. In those cases, focus on tools that work alongside editing software or offer fast command-line options. By picking the right delivery method for the person receiving the files, you make the next phase of the project easier for everyone.