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"A Must Have For All Levels
of Digital Photographers"
"123di is hugely comprehensive and covers almost every detail of digital cameras and digital imaging. I wholeheartedly recommend it.

I'm a firm believer that 'The 123 of digital imaging' is a must have for all levels of digital photographers and that you only need to download the demo to realize that its true value goes way beyond the asking price."

Phil Askey
Founder of
"Extremely Impressed by
the Level of Detail"
"I have to say that overall I was extremely impressed by the level of detail that you cover not only explaining Adobe's features but also the more general, underlying concepts and technologies that photographers need to comprehend."

Julieanne Kost
Senior Digital Imaging Evangelist
Adobe Systems, Inc.
"An Invaluable Tool"
"123di enhances the experience with our Nikon D-SLR cameras and software during all stages of the workflow. The integration of easy-to-understand theory with hands-on tutorials, available in three levels makes this an invaluable tool for all our D-SLR customers, regardless of their level of experience."

Peter Burke
Former President and CEO of Nikon Canada
A highly visual and interactive guide containing over 5,000 screen-sized pages and thousands of graphics and animations.

Master the right camera settings and composition techniques to capture stunning images.

Learn Adobe® Photoshop® through step-by-step animated tutorials.

Easy to understand, clear and concise, comprehensive and accurate.

3 selectable learning levels:
—"Starter" sections for beginners
—"Essential" sections for enthusiasts
—"Advanced" sections for professionals
123di Exposure Simulator App

What is the difference between shooting with an aperture of f/2.8 and a shutter speed of 1/1000s and shooting with an aperture of f/16 and a shutter speed of 1/30s? These and many other questions are answered with the easy to understand 123di interactive simulator. Learn how aperture and shutterspeed affect exposure, depth of field, and motion blur in the various exposure modes using the unique interactive learning based on the 123di of digital imaging interactive learning suite.
CanonSGLens Apps

Are you a Canon DSLR user?

Download the FREE CanonSGLens app which features detailed lens specifications of all Canon DSLR lenses, including unique interactive simulators. CanonSGLens is a free Canon Singapore App published by 123di and authored by Vincent Bockaert.