Developing 4x5 Sheet Film Yourself: An Overview of All Methods

You’ve taken the plunge into large format. Congratulations. But now you’re faced with a question every new 4x5 photographer asks: How do I develop these huge negatives at home?

Anyone coming from 35mm knows the drill: film into the reel, reel into the tank, add the chemicals, done. With sheet film, things suddenly become more complicated. There are surprisingly many methods, from free to several hundred euros. Each has its merits—and its pitfalls.

This article gives you an honest overview of all common methods, so you can find the one that suits your budget, workflow, and requirements.

Here’s the accompanying video: Developing 4x5 sheet film in a Paterson tank

1. Tray Development

Cost: €0–20 (trays + chemicals only)

Capacity: 1–10+ sheets (depending on tray size)

Darkness: Completely dark throughout the entire process

The oldest and cheapest method. You place your sheet film in open photographic trays and move it by hand through developer, stop bath, and fixer.

Video: Tray processing sheet film

Advantages:

• Practically free if you already have trays
• Complete control over every individual sheet
• Ideal for the Zone System (N+/N- development per sheet)
• Ansel Adams worked this way; it has been tried and tested for decades

Disadvantages:

• You spend the entire process in absolute darkness
• Handling open trays of chemicals by touch
• Real risk of scratches (film corners scratch adjacent sheets), plus high chemical consumption
• Learning curve for “shuffling” (flipping through the films without damaging them)

Who is it for? Photographers who need maximum control, use the Zone System, and have no problem working in the dark. Or beginners who want to try it out without investing first.

2. The “Taco Method”

Cost: €5–10 (rubber bands + an existing tank)

Capacity: Up to 4 sheets in a standard tank

Darkness: Completely dark when loading

The budget hack: You roll the sheet film into a “U” shape (hence “Taco”), secure it with rubber bands, and place it in a regular Paterson or Jobo tank.

Video: Developing sheet film taco method

Advantages:

• Almost free
• Uses existing equipment

Disadvantages:

• Unreliable: Rubber bands slip off, films stick together
• Uneven development due to restricted chemical circulation
• The emulsion is on the inside and is poorly rinsed
• Navigating in the dark is confusing

Who is it for? Honestly: no one in the long term. It's an emergency workaround, not a system. If you develop more than one test film, invest in a better solution.

3. HP Combi Plan T

Cost: €45–90 (secondhand only, hard to find)

Capacity: 6 sheets per frame

Darkness: Dark when loading the frame, then daylight

A classic from the '90s. The Combi Plan is a compact dip-and-dunk system with a film frame that is dipped into separate tanks for developer, stop bath, and fixer.

Image: Secondhand Darkroom

Advantages:

• Affordable entry point (often under €50 secondhand)
• Clever clamp holders prevent slipping
• Compact dip-and-dunk principle

Disadvantages:

• No longer manufactured, so you're dependent on the secondhand market
• Narrow lids can lead to uneven distribution when pouring
• The chemical circulation is not up to the level of modern systems
• Replacement parts are hard to find

Who is it for? Bargain hunters who find one on eBay and are looking for a tested, proven system.

4. Yankee/Nikor Tanks

Cost: €20–60 (secondhand)

Capacity: 4 sheets (with divider) or 1× 8x10

Darkness: Some models can be used in daylight

Older American tank systems with rocking agitation. You can occasionally find them at flea markets or in online auctions.

Video: Large Format Film - 4x5 Film Processing Methods

Advantages:

• Very inexpensive secondhand
• Multi-format (4x5 and 8x10)
• Simple principle

Disadvantages:

• Uneven results, many users report streaks and spots
• Outdated design
• No replacement parts, no community

Who is it for? Collectors and tinkerers. There are better options for serious work.

5. MOD54

Cost: ~€60 (e.g. Fotoimpex €59.90, Macodirect €58.95)

+ Tank: Paterson Multi-Reel 3 PTP116: ~€30 (Macodirect €29.95)

Total cost: ~€90

Capacity: 6 sheets 4x5

Darkness: Load in the dark, then daylight (in the Paterson tank)

Image: Macodirect

The MOD54 is the best-known insert for standard Paterson tanks. Developed by photographer Morgan O'Donovan under the MOD Photographic brand, it has established itself in the community as a reliable solution. Although the original manufacturer's website is no longer accessible, the product is still available through specialist retailers such as Fotoimpex and Macodirect.

Advantages:

• 6-sheet capacity
• Large community, many user reports
• Can be bought new immediately

Disadvantages:

• Requires the larger Paterson PTP116 (Multi-Reel 3), not the standard PTP115!
• No integrated light trap
• Loading in the dark requires practice

Who is it for? Photographers who already own a Paterson Multi-Reel 3 Tank (PTP116) and want a proven injection-molded solution.

6. Stearman Press SP-445

Cost: €100 (Fotoimpex), $96 USD directly from the manufacturer

+ Tank: included (self-contained system)

Total cost: ~€100

Capacity: 4 sheets of 4x5

Darkness: Daylight loading (self-contained tank)

Image: Stearman Press Shop

The SP-445 is a self-contained tank system specifically developed for 4x5 sheet film. The special feature: you can load the film in daylight. It requires only 475 ml of chemistry per cycle.

Advantages:

• Daylight loading, no changing bag or darkroom required
• Excellent chemical circulation and even development
• Compact, self-contained, and economical in chemical usage (475 ml)
• Available to order directly from Fotoimpex in Germany

Disadvantages:

• Only 4 sheets (instead of 6 with most alternatives)
• Not usable for other formats

Who is it for? Photographers without a darkroom who want maximum convenience. Available to order from Fotoimpex in Germany.

Manufacturer: Stearman Press, USA, shop.stearmanpress.com

7. JOBO 2509n / Rotary processing

Cost spiral: 70,26 € (Macodirect)

+ Tank: A JOBO 2500-series tank is required. Cheapest new tank: JOBO 2550 Multitank 5, €170.75 (Macodirect)

Total cost: ~€241 (reel + tank, without processor!)

Capacity: 6 sheets per 2509n reel

Darkness: Dark while loading, then daylight

Image: Macodirect

The professional solution. The JOBO 2509n reel holds 6 sheets of 4x5 and fits all JOBO 2500-series tanks (2520, 2521, 2523, 2550). It can be used with either a JOBO rotary processor or manual inversion development; a processor (CPP-2/CPP-3, from €4,190) is not strictly necessary.

Advantages:

• Precise temperature control (with processor)
• Continuous agitation for maximum consistency
• Multi-format (35mm, 120, sheet film) with professional results
• Can also be used manually (without a processor)

Disadvantages:

• High upfront costs: Tank alone costs €170+
• Complete system with processor: €4,000+
• Takes up a lot of space
• Cheapest tank (2520) only available used

Who is it for? Professionals, high-volume developers, and anyone who wants to process C-41 or E-6 at home. If you develop 20+ sheets per week, the investment is worthwhile.

8. 3D-printed solutions

Cost: €10–50 (filament/printing service)

Capacity: 4–6 sheets (depending on the design)

Darkness: Varies depending on the design

The open-source revolution has also reached film development. On platforms such as Printables and Thingiverse, you can find free designs for Paterson-compatible sheet-film inserts.

Image: Evan Dorsky on Printables

Advantages:

• Extremely affordable (especially with your own 3D printer)
• Can be customized to your own needs
• Community-driven, with constant improvements
• Uses existing Paterson tanks (PTP115)

Disadvantages:

• Print quality varies greatly
• Long-term durability of PLA/PETG in chemicals has not always been tested
• Fit depends on the type of printer
• Trial and error during first use

Who is it for? Makers, hobbyists, and anyone with access to a 3D printer. For those who enjoy optimizing.

9. Ausgeknipst 4x5 Development Reel MK2

Cost: 59,95 €

+ Tank: Standard Paterson PTP115: ~€25 (the smaller, cheaper tank!)

Total cost: ~€85, the cheapest new complete system

Capacity: 6 sheets 4x5

Darkness: Dark during loading, then daylight (integrated light trap)

Our own solution—and yes, we are biased, which is why it is deliberately not listed first. The reel is based on the open-source design by Evan Dorsky on Printables, which we further developed.

What makes the MK2 version different?

The crucial difference from the original design is an integrated light trap. If you place the simple open-source design in a Paterson tank, the standard funnel no longer fits, so you would have to carry out the entire development process in the dark. Our MK2 version has its own light chamber, which solves the problem:

1. Load the film into the reel in the dark
2. Put on the light chamber
3. Attach the standard Paterson funnel
4. Light on, from now on everything can be done in daylight

An honest note: Loading requires some dexterity at first. Practice a few times in daylight with an old film before you try it with real shots.

After development, the reel can be disassembled into two halves, allowing you to remove the negatives without resistance—no pulling or pushing on the wet, delicate emulsion.

Advantages:

• Cheapest NEW system for 4x5 tank development (~€85 complete)
• Works with the Standard Paterson PTP115 (not the more expensive PTP116!)
• Integrated light trap (MK2 upgrade)
• 6-sheet capacity
• Can be disassembled for scratch-free removal, open-source basis
• Can be bought new immediately

Disadvantages:

• Loading in the dark requires practice
• Smaller community than MOD54

Need a compatible Paterson tank? → Paterson tanks at Ausgeknipst

In addition to the 4x5 version, we also have reels for 9x12 and other niche formats.

→ View the 4x5 development reel MK2 in the shop

Comparison table

Chemistry and practical tips

Regardless of which method you choose, a few basic rules always apply:

Chemical quantity: For inserts for Paterson tanks, you need approx. 500 ml of chemistry in the PTP115 (Ausgeknipst MK2) and approx. 1000 ml in the PTP116 (MOD54).

Dilution and time: The development times are given in the manufacturers' data sheets, at Ilford for HP5 Plus, FP4 Plus and the Delta films, at Kodak for Tri-X. If you don't want to work out the concentrate and water yourself, use DarkLab, a free calculator for black and white film by the Italian photographer Osea Costantini. It knows 4x5 in the Paterson PTP116 and in the JOBO 2509n, starts in Italian and can be switched to English at the top. DarkLab calculates with rotation by default. If you invert the tank by hand, set the agitation to “Intermittent”, otherwise the time and the amount of chemistry will come out too short.

Agitation: Invert the tank normally during agitation, but do not agitate too aggressively. With insert systems, excessive movement can cause the films to come loose from their guides.

Temperature: Precise temperature control is particularly important for C-41 (color). For black-and-white negative film, a deviation of ±0.5°C is generally not critical.

Changing bag: If you do not have a darkroom, you need a changing bag for loading (this applies to all methods except SP-445).

The LAB-BOX from ars-imago is sometimes mentioned as a 4x5 solution, but it supports only 35mm and 120 roll film. There is no 4x5 module, nor has one been announced.

Which method is right for you?

There is no “best” method, only the right one for your situation:

• No budget? → Tray development. It costs nothing, but it works.
• Already have a Paterson tank? → Ausgeknipst MK2 (fits in the standard PTP115!) or MOD54 (requires the larger PTP116).
• Buying everything new and want to keep costs as low as possible? → Ausgeknipst MK2 + PTP115 for ~€85, the cheapest new complete system.
• No darkroom, no changing bag? → Stearman Press SP-445 (orderable from Fotoimpex in Germany).
• Professional standards and budget available? → JOBO 2509n + 2500 tank.
• Maker with a 3D printer? → Print Evan Dorsky’s design yourself.

The most important thing: Get started. No method is perfect, and you will develop your own workflow. Most large-format photographers have tried several methods over time and then settled on one.

If you have any questions, write to us using the contact form or leave a comment below the video.

Good light! Vladi from Ausgeknipst.