For those that have studied Myron Barnstones' lectures, it's no secret that he couldn't apply Dynamic Symmetry principles intuitively to a drawing or painting without golden section calipers - even after 35 years of teaching. In fact, he states this at the end of his video "The Golden Section: Unlocking the Secrets of Design."
However, some online marketers are implying, based on this statement, that photographers cannot apply Dynamic Symmetry principles to their images unless they use camera design grids taped to their camera. In other words, if Myron can't do it, why would you think you can?
Years ago, I spent three days with Myron Barnstone in his studio in Coplay, Pennsylvania talking about art, photography, and design. During our many conversations, he never once suggested photographers could apply Dynamic Symmetry in the same manner as the artist (direct application using calipers or tools) nor did he claim photographers need camera design grids to create a masterful photograph.
The fact is, photographers have been applying classical design techniques for over 90 years without camera design grids and suggesting otherwise discredits a long line of historically relevant and influential photographers. More importantly, taking Myron Barnstones' words out of context to increase camera grid sales is in poor taste and lacks respect for his lifetime achievements as an artist and educator of Dynamic Symmetry.
To learn more, see the article Dynamic Symmetry for Photographers.