“Autumn light is the Sun’s love letter to the Earth, written in gold across the leaves, lingering just long enough to remind us that even a farewell can be beautiful.” – MJ Martin
When the Sun Begins to Whisper
There is something unmistakable about autumn light in Canada. It arrives more gently than the hard brilliance of July, touching the land rather than flooding it. Across the Prairies, the forests of Ontario and Quebec, the Atlantic coast, and the mountains of British Columbia and Alberta, September and October seem illuminated from the side, as though the Sun itself has become an artist.
This impression has a physical foundation. Following the autumnal equinox, the Sun continues its apparent journey southward in our sky toward the winter solstice. The National Research Council of Canada explains that autumn begins when the Sun crosses the equator moving southward, while winter arrives when the Sun reaches its farthest southern position. (National Research Council Canada) For Canadians, particularly at higher latitudes, that changing geometry becomes increasingly visible in the character of daylight.
A Sun Lower in the Sky
As autumn advances, the Sun travels a lower arc across the Canadian sky. Its light consequently strikes landscapes at a more oblique angle. Shadows lengthen. Trees acquire dimension. The texture of bark, grasses, fields, mountains, and buildings becomes more pronounced.
For the photographer or painter, this is one of autumn’s quiet gifts. Light arriving from the side behaves almost like a sculptor’s chisel. It reveals contours that overhead summer sunlight can flatten. A field is no longer simply illuminated. Every furrow acquires a shadow. Every blade of grass catches a silver edge. Every wrinkle in an old wooden barn suddenly has a story.
The Sun has not changed. Our relationship with it has.
The Golden Atmosphere
There is also physics behind autumn’s warmth. When the Sun is low, its rays travel through considerably more of Earth’s atmosphere before reaching our eyes. NASA explains that this longer atmospheric path scatters more of the shorter blue wavelengths, allowing proportionally more orange and red light to reach an observer directly. (NASA Science) NOAA describes the same phenomenon as the fundamental reason sunrise and sunset light becomes increasingly dominated by warmer wavelengths. (NOAA Global Monitoring Laboratory)
It is as though the atmosphere becomes an enormous natural filter suspended between the Sun and the landscape.
That does not mean autumn sunlight itself has somehow acquired a new spectrum. Weather, aerosols, cloud cover, humidity, and local atmospheric conditions still matter enormously. Yet autumn gives us more opportunities to experience the aesthetic consequences of a lower Sun.
When Light Meets Colour
Then nature conspires with the light.
As daylight diminishes and temperatures fall, deciduous trees stop producing chlorophyll. Parks Canada explains that the disappearance of green chlorophyll allows other pigments to become visible, producing brilliant yellows, oranges, reds, purples, and copper tones. (Parks Canada) Natural Resources Canada similarly notes that declining chlorophyll changes the wavelengths reflected from autumn leaves. (Natural Resources Canada)
Now imagine warm, low-angle sunlight striking those colours.
Gold illuminates gold. Amber falls upon amber. Crimson leaves become almost translucent when backlit, glowing like tiny pieces of stained glass. Autumn does not merely change the colour of the landscape. It changes the canvas upon which sunlight paints.
The Long Goodbye
Perhaps this is why autumn light feels emotional.
Spring light promises. Summer light celebrates. Winter light endures. Autumn light remembers.
Its beauty seems heightened precisely because we know it is temporary. Each afternoon grows shorter. Each sunset arrives a little earlier. The Sun descends toward its winter slumber, and the great Canadian landscape begins preparing for silence.
Photography teaches us that light is rarely beautiful because of brightness alone. Beauty comes from direction, contrast, colour, shadow, and timing. Autumn possesses all five.
The finest fall photograph may therefore capture something larger than colour. It captures transition. It records the instant when abundance begins surrendering to stillness, when summer relinquishes the land, and when sunlight seems to hesitate for one final moment among the leaves.
Questions Through an Artist’s Eyes
* When you photograph autumn, are you really photographing the trees, or are you photographing the light falling upon them?
* Do you prefer the fiery drama of backlit leaves, the dimensional texture of sidelight, or the quiet melancholy of the final light before sunset?
* And perhaps the deeper question is this: would autumn light seem quite so beautiful if we did not know that winter was coming?
About the Author:
Michael Martin is the Vice President of Technology with Metercor Inc., a Smart Meter, IoT, and Smart City systems integrator based in Canada. He has more than 40 years of experience in systems design for applications that use broadband networks, optical fibre, wireless, and digital communications technologies. He is a business and technology consultant. He was a senior executive consultant for 15 years with IBM, where he worked in the GBS Global Center of Competency for Energy and Utilities and the GTS Global Center of Excellence for Energy and Utilities. He is a founding partner and President of MICAN Communications and before that was President of Comlink Systems Limited and Ensat Broadcast Services, Inc., both divisions of Cygnal Technologies Corporation (CYN: TSX).
Martin served on the Board of Directors for TeraGo Inc (TGO: TSX) and on the Board of Directors for Avante Logixx Inc. (XX: TSX.V). He has served as a Member, SCC ISO-IEC JTC 1/SC-41 – Internet of Things and related technologies, ISO – International Organization for Standardization, and as a member of the NIST SP 500-325 Fog Computing Conceptual Model, National Institute of Standards and Technology. He served on the Board of Governors of the University of Ontario Institute of Technology (UOIT) [now Ontario Tech University] and on the Board of Advisers of five different Colleges in Ontario – Centennial College, Humber College, George Brown College, Durham College, Ryerson Polytechnic University [now Toronto Metropolitan University]. For 16 years he served on the Board of the Society of Motion Picture and Television Engineers (SMPTE), Toronto Section.
He holds three master’s degrees – in business (MBA), communication (MA), and education (MEd). As well, he has three undergraduate diplomas and seven major certifications in business, computer programming, internetworking, project management, media, photography, and communication technology. He has completed over 80 next generation MOOC (Massive Open Online Courses) [aka Micro Learning] continuous education programs in a wide variety of topics, including: Economics, Python Programming, Internet of Things, Cloud, Artificial Intelligence and Cognitive systems, Blockchain, Agile, Power BI, Big Data, Design Thinking, Security, Indigenous Canada awareness, and more.
Martin is a volunteer, a photographer, a learner, a technologist, a philosophizer, and a romantic optimist.