Independent teachers
One teacher, a teaching space, and a steady stream of students. C3NTR puts your techniques, materials and history in one place.
For creative schools
A knowledge home for your photography studio.
Exposure, composition, light and the long craft of seeing
→ See a quick tour
Free for up to 30 students
No credit card
UK GDPR · EU (London)
Works offline
Your studio's craft deserves a home
Camera settings get explained on the shoot but rarely on the page. Lighting choices live in the photographer's head. Editing workflows and reference shoots sit across different folders. C3NTR is a quiet place to write it all down once, in your studio's voice.
Who this is for
Studios with multiple teachers
Two or more teachers teaching across the week. C3NTR holds the shared standard so every class draws from the same library.
Studios preparing for photography careers
Your students are building portfolios for photo careers. Content locked by level keeps newer students on basics while portfolio students see full briefs.
Built for teachers, not for IT
Your teacher opens the app, taps Edit, and writes the next lighting setup in plain prose. The next shoot, students arrive knowing the setup.
Write directly in the app
Like a notepad. New articles are drafts until you publish, so nothing goes live by mistake.
Mobile-first authoring
Edit on the phone between classes or on the way home. The same library, the same edit screen.
A working library in under an hour
Import the starter template in a few taps. Edit anything that doesn't fit. Publish when ready.
Levels, beginner, intermediate, advanced, portfolio
Content locked by level, in your studio's progression
Tag any article with a minimum level. Beginners see exposure and composition. Intermediate see lighting. Advanced see portfolio work. The same library, the right view per student.
A glossary of photography terms
Photography carries its own vocabulary. C3NTR's glossary holds the terms in one place: the technical names, your studio's preferred terms, and the article each term appears in.
- Aperture
- The adjustable opening in a lens that lets light through to the camera's sensor, and the control that sets its size.
- Shutter speed
- The length of time the camera's sensor is exposed to light during an exposure, measured in seconds and fractions of a second.
- ISO
- The sensor's sensitivity to light, the third leg of the exposure triangle.
- Depth of field
- The range of distances in a photograph that appear acceptably sharp, controlled mostly by aperture, but also by focal length and subject distance.
- Golden hour
- The hour after sunrise and the hour before sunset, the time of day favoured by photographers for its soft, warm, directional light.
- Bokeh
- The visual quality of the out-of-focus areas in a photograph, from the Japanese *boke*, meaning "blur" or "haze."
Exhibitions, shoots, critiques
C3NTR isn't only the library. Schedule the next exhibition, post shoot dates, and let students see what's ahead. Announcements land on their Today tab and events sit on the calendar.
Start from our Photography template
A working starter with 12 articles, 2 short videos, a 9-terms glossary across 5 tags (Getting Started, Camera Basics, Composition and Light, Genres and Projects, Editing and Workflow). Import in a few taps, then edit anything that doesn't fit your school. Every article, term and tag is yours from the moment you import.
See the Photography template Template source:assets/templates/creative/photography.c3t.md
Inside the app
A look at how the library, articles and grade controls feel in your students' hands.
Plays well with what you already have
Bring your existing technique notes and material lists in with smart Word document import or paste Markdown directly from your studio's archive.
Word documents
Smart import reads headings and turns them into draft articles. You review before anything publishes.
Markdown from any editor
Notion exports, Obsidian notes, Bear, plain .md files. Paste or import.
C3NTR templates
Open .c3t.md format. Schools can share templates with each other without us in the middle.
UK GDPR · DPA 2018
UK GDPR compliant. Hosted in the EU (London).
C3NTR is built around UK data protection law from the ground up. Your school's data sits in the EU on Google Cloud London, the same region we manage from.
UK GDPR + Data Protection Act 2018
Built around UK GDPR Article 6 lawful bases. Subject access requests answered within one calendar month.
Hosted in the EU (London)
Your school's data sits on Google Cloud in the europe-west2 (London) region. No transfer outside the UK or EEA for core operation.
Encrypted in transit
All data is TLS encrypted. Access restricted to personnel with a clear business need.
Account deletion on request
Permanent deletion of personal data and content via in-app or written request.
What C3NTR is, and what it isn't
A library your school owns
Another booking or billing system
Built for how schools actually teach
A generic course builder
Calm, focused reading for students
A feed competing for attention
Start free. Move up when you outgrow it.
Seed
Free forever
Up to 30 students
All core features. No credit card.
Start freeSchool
£39/mo
£32/mo billed annually
Up to 150 students
Push notifications. 1 GB media storage.
Choose SchoolAcademy
£69/mo
£57/mo billed annually
Unlimited students
Multi-instructor publishing. Engagement analytics. 5 GB media storage.
Choose AcademyStudent? Show this to your teacher.
If you practise photography and you'd love a quiet library you can return to between sessions, share this page with your teacher. Most studios start on the free Seed plan in under five minutes.
Common questions
Can students only see their level's material?
Yes. Tag any article with a minimum level. New students see only foundations. Teachers see everything.
Does it cover Magnum, fashion (Vogue), documentary, your method?
Yes. The starter is method neutral. Magnum, fashion (Vogue), documentary can adapt without rewriting.
Can my studio customise the photography template?
Yes. Every article, technique and term is editable. Add your studio's preferred methods, your favoured materials and your house standards.
How long does it take to set up?
Most schools have a working library in under an hour. Import the starter template in a few taps, then edit anything that doesn't fit. Starting blank takes a little longer. Allow an hour or two to write your first ten articles. Students can use the app the day you publish.
Do I have to stop using my booking system?
No. C3NTR is a knowledge library for your curriculum, terminology and progressions. Booking, billing and scheduling stay with the tools you already use.
Is there a free plan?
Yes. Seed is free forever for up to 30 students, with no credit card required. Move up to School (£39/mo) or Academy (£69/mo) when you outgrow it.
Other creative disciplines
Teach a different style? Tell us.
Whether it's a specific photography lineage we don't list, or another discipline entirely, drop us a line and we'll add a starter template. In the meantime, the app already works for any structured curriculum, your library starts blank in a few minutes.
Ready to give your photography students a knowledge home?
Free for the first 30 students. No credit card. A working library in under an hour.
Start free for your school