The rule of thirds, by the way is just a way around the fact that your image space does not comply to the golden section anyway. To create a rectangle that does, first draw a square. 2. get a compass and placing the pencil end on a dagonally opposite corner, draw the arc of the circle down to meet the line that extends from the corner the point of the compass is on. 3. Then, placing a set square on that same line at the point where the pencil line from the compass intersects it, create a rectangle whose length is that extension of the square.
That then is an oblong shape that IS NOT 4:3 or 3:2 or 1:1. When you have found a sensor that is that proportion let me know, but if you do, it wont help you.
I used 4:3 digicams initially and got so used to the TV shape I found even trying to stretch to 3:2 difficult, although I had had years of using it with film.
Try a hasselblad or Bronica or Rolleiflex type square thingy. What you notice about the shape is that it is in itself static compared to 3:2. Squares arent going anywhere, they are like circles compared to ovals.
The reason reportage is mostly 3:2 is that dynamic shape, nothing to do with composition at all, yet much of the best fashion photography involving models is on static shaped machines.They can crop in either direction from the square. In the real world however, just as there are no straight lines (cough) so too there is movemrnt and 3:2 has a stretched shape that is going from A to B.
That's why 4:3 DSLRs have a hard time of it with pros. It's a much better easier shape to compose within, much. It just does not move or go anywhere much.
In the same way an Xpan landscape, though superficially coool, is unsatisfactory, because the landscape, the SUBJECT- is itself unmoving. The Xpan pics that show movement on the other hand, however chaotic, make sense because the shape is perfect for action pics per se.
In my first rant it was monkey see, monkey do. This one is the horses for courses bit. Size matters, and so does shape.
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narayana