I used a recent visit to London to get shots of implied and actual triangles.
A. Implied triangles
The points of the implied triangle here is the face, elbow and phone
The bike and rider make, for me, a dynamic triangle.
The angle that the three columns are taken at forms an inverted triangle of the ornate tops.
I think this is a bit more subtle as the compression of a zoom lens at 300mm create a group of three people whereas in reality the lady in the middle had no connection with the couple nearest to the camera.
This on the other hand, with what appears to be three generations, is a more connected inverse triangle.
B. Actual Triangles.
Inverse triangles of the fruit cones.
Possibly the most well known triangle in London – The Shard.
You could argue whether this is an actual triangle or an implied one
C. Still life
In the second part of the exercise you are asked to create two triangular set ups – apex at the top and apex at the bottom.
I decided to use some lenses for the subject and played around with various set ups:-
Looking down. While this is clearly a triangle it’s not a very exciting one.
With the apex at the top it is slightly more interesting.
The low angle creates in my view a more dynamic composition while still creating, albeit less obviously, a triangle.
The same angle with the apex reversed
The in between angle of the above. Again the triangular shape is clear and the spacing of the lenses in the frame is better I think although arguably the picture is not as dynamic.
These two shots are from a studio shoot I did for my girlfriend’s birthday with her five sons. During the session there were a number of arrangements but these two represent the most “triangular.”
I think I tend to spot these compositional shapes, be they rectangular circular or triangular, on an almost subconscious level at the point of shooting and then more proactively at the selection/weeding out process.