USA’s #1 Mail-In Film Lab

Large Format Sheet Film Processing

We process 4×5, 5×7, and 8×10 sheet film in C-41, E-6 Slide, and True Black & White using professional dip & dunk processors — the gold standard for large format.

Starting at just $6

Start Your Order

What’s Included:

  • Professional dip & dunk developing — negatives always returned
  • 4×5, 5×7, and 8×10 formats accepted
  • C-41, E-6 Slide, and True Black & White processing
  • Optional high-resolution scans available at checkout
Film photo by a Darkroom customer Film photo by a Darkroom customer Film photo by a Darkroom customer
★★★★★
Loved by 300k+ photographers
Large format sheet film dip and dunk processing Satisfaction guaranteed since 1976

How it works

Place your order online

1. Order Online

Choose your film size, process type, and optional scans — then add to cart.

Mail your film to the lab

2. Mail Your Film

Pack your sheets in a light-tight box or holder. A prepaid label is included at checkout.

No printer? Request a free mailer.

Receive your scans and negatives

3. Get Your Negatives Back

Processed negatives returned by mail. Digital scans delivered to your online gallery if selected.

Start your order

Sheet film formats

Join 300,000+ photographers who trust The Darkroom. Professional dip & dunk processing for 4×5, 5×7, and 8×10 — starting at $6.

Develop Sheet Film

The Darkroom Difference

Our Refrema and Sitte Ticher dip & dunk processors deliver consistent, artifact-free development on every sheet. For 50 years, large format photographers have trusted us with their most important work.

The Darkroom lab technician at work
Refrema dip and dunk sheet film processor
Film scanning equipment at The Darkroom lab
Celebrating 50 Years of Quality Film Developing

Professional Dip & Dunk Processing

Our Refrema and Sitte Ticher processors deliver even, artifact-free results on every sheet — no scratches, no transport marks, no guesswork.

3–7 Day Turnaround

Most sheet film orders are developed and shipped within 3–7 business days of arriving at our lab. We’re in Southern California, so mail is typically 2–5 days from anywhere in the US.

50 Years of Large Format Expertise

Since 1976, we’ve specialized in large format film developing. Our technicians understand the care and precision every sheet deserves.

Frequently Asked Questions

We process 4×5, 5×7, and 8×10 sheet film. All three sizes are available in C-41 (color print), E-6 (slide/color reversal), and True Black & White processing.
We use Refrema and Sitte Ticher dip & dunk processors for all sheet film. This method suspends each sheet individually in the chemistry, producing even, artifact-free results with no transport marks or scratches.
Keep your film in its original light-tight boxes or holders. Wrap securely in a padded envelope or small box. A prepaid shipping label is provided at checkout — just print, attach, and mail. You can also request a free mailer and we’ll send you a postage-paid envelope.
Most sheet film orders are developed and shipped within 3–7 business days of arriving at our lab. We’re located in Southern California, so mail transit is typically 2–5 days from most US locations. Processing times may extend during peak seasons.
Yes! Scanning options are available for sheet film. Select your preferred scan resolution at checkout to receive high-resolution digital files alongside your developed negatives.
No problem! You can download and print our order form and postage-paid label. Fill it out and mail it to us — no online order necessary.

Ready to develop your large format film?

Join 300,000+ photographers who trust The Darkroom. Professional dip & dunk processing for 4×5, 5×7, and 8×10 — starting at $6.

Start Your Order