---
title: "What is the AGO Film Processor, and how can it work without controlling temperature? | Neo Analog Lab"
url: https://shop.neoanaloglab.com/en/news/faq-what-is-ago-film-processor
language: en
description: "AGO turns a Paterson tank into an automatic processor. Instead of holding temperature, it adjusts development time to match the drift."
---

# What is the AGO Film Processor, and how can it work without controlling temperature?

AGO turns a Paterson tank into an automatic processor. Instead of holding temperature, it adjusts development time to match the drift.

faq Neo Analog Lab Published August 26, 2026

ago film-processor self-development vintage-visual rotary

**The AGO Film Processor is a battery-powered agitator that grips a Paterson Super System 4 tank and turns it.** It is designed and built by Vintage Visual OÜ in Estonia.

It gets consistent results without a heater because it **replaces temperature control with time compensation**. A sensor watches the chemistry during the run and extends development time to match any drop (Active Time-Compensation). You warm the chemistry roughly, pick a program, and press start.

- Processes: B&W, C-41, E-6, ECN-2 and RA-4, with separate programs per chemistry brand, added over Wi-Fi
- Agitation: rotary (horizontal) and stick (vertical). **Time compensation only runs in rotary mode**
- Chemistry: rotary processing uses up to 60% less than traditional vertical or inversion agitation
- Body: 88 × 136 × 170 mm, 556 g, IP56, two 18650 Li-ion cells giving 4–5 hours of continuous use, USB-C charging

No darkroom is needed — only a changing bag for loading film onto the reels.

Sources: [AGO Film Processor product page](https://vintagevisual.eu/pages/ago-film-processor/) , [AGO wiki](https://www.vintagevisual.eu/wiki/ago-wiki/machine-overview/)

Related

## Related articles

[faq Aug 26, 2026 How do you hold 38°C for C-41 development at home? C-41 runs near 38°C. You either hold the temperature with a water bath, or let a processor compensate with time.](https://shop.neoanaloglab.com/en/news/faq-color-home-development-temperature) [faq Aug 26, 2026 Does the AGO work with a Paterson tank I already own? Yes — every Paterson Super System 4 tank fits, but the funnel needs three holes drilled in its side.](https://shop.neoanaloglab.com/en/news/faq-ago-paterson-tank-compatibility) [faq Aug 26, 2026 How much chemistry does rotary processing actually save? Up to 60% versus vertical or inversion agitation, per the manufacturer. A two-reel tank needs 350ml per step.](https://shop.neoanaloglab.com/en/news/faq-rotary-processing-chemistry-saving)

Related products

## Related stock

[AGO Film Processor (with Paterson PTP115 Tank)](https://shop.neoanaloglab.com/en/products/ago-film-processor) [AGO Film Processor (without tank)](https://shop.neoanaloglab.com/en/products/ago-film-processor-without-tank)

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