The wonderful world of M43 optics
There's something special about shooting with Micro Four Thirds. Maybe it's the way you can slip an OM-1 with the 12-40mm f/2.8 PRO into a small bag and know you're ready for anything. Or perhaps it's discovering how beautifully the 75mm f/1.8 renders a subject while maintaining that gorgeous bokeh quality.
M43 photographers often discover that the system's compact size and excellent stabilization opens up creative possibilities that larger systems simply can't match. We can shoot handheld in situations where others need tripods, and we can capture intimate moments without intimidating our subjects.
Those moments when precision matters
Whether you're exploring macro photography, crafting portraits or capturing sweeping landscapes, there are times when knowing your depth of field precisely can transform a good photo into something special.
That's where M43 DoF-app comes in — not as a replacement for experience and intuition, but as a helpful companion that lets you explore the full creative potential of your lenses.
Enter your focal length, aperture and focus distance for instant depth of field calculations. Perfect for those moments when you need to know exactly what will be sharp in your frame.
Three ways to explore the M43 Companion App
The M43-app offers three different approaches to accompany you in your photography:
Fast calculations when you know your settings. Enter focal length, aperture and focus distance for immediate results.
Browse our comprehensive collection of M43 lenses. Mark your favorites and/or the lenses you own and access their specifications quickly.
Document your successful shots with notes about settings, conditions, and results for future reference.
A lens database made for M43 enthusiasts
One thing that makes M43 special is the incredible variety of lenses available. From tiny pancakes perfect for street photography to specialized macros and long telephotos, there's a lens for every creative vision.
The app includes data for over 70+ M43 lenses from Olympus, Panasonic and third-party manufacturers. You can mark the lenses you own to keep them easily accessible.
All your notes can be exported as either csv, json or text files, making it easy to share techniques with fellow photographers or keep detailed records of your shooting sessions.
Learning and discovering together
M43 DoF isn't trying to replace the joy of discovery that comes with learning your lenses through experience. Instead, it's meant to help you understand the "why" behind the results you're getting, and perhaps inspire you to try new creative approaches.
Sometimes knowing that your hyperfocal distance with the 12mm f/2 at f/8 is just 1.2 meters can give you the confidence to try a composition you might not have attempted otherwise.
"The best tools help you see new possibilities, rather than limiting your vision."
Built for the field, designed for simplicity
M43 photographers are often drawn to the system because it gets out of the way and lets you focus on making images. M43 DoF follows the same philosophy:
- Works completely offline—perfect for remote locations
- Clean interface that's readable in bright sunlight
- Quick access to your most-used lenses
- Simple note-taking for documenting what works
The goal is to give you the information you need quickly, then get out of your way so you can focus on the creative side of photography.
M43 DoF Calculator
A simple, focused tool for M43 photographers who want to explore the creative possibilities of depth of field control. Three modes, comprehensive lens database, and easy export functionality.
A small contribution to our community
The M43 community has always been generous with sharing knowledge and inspiration. M43 DoF is my small way of contributing back—a tool that I hope helps fellow M43 photographers explore and enjoy this wonderful system even more.
Whether you're just starting with M43 or you've been shooting with the system for years, I hope this little app helps you discover something new about the creative possibilities that depth of field control can offer, a "lost" lens in your collection or the fine practise of taking shot notes -perhaps even sharing them with a fellow enthusiast.
M43 DoF is available for $2.99 on the App Store. Made with appreciation for the M43 photography community and the joy of creating images with these remarkable cameras and lenses.