And no, I don't mean your eyesight getting worse as you age. I'm talking about how your photographic conception changes as you experiment amongst formats. When I started out, I was very much a square-format guy. My primary camera was a Hasselblad. I loved the square, and always composed out to the corners. On only very rare occasions would I crop anything to a rectangle. I moved into Large Format, and initially worked 4x5, then added 8x10, which is the same proportion. They're both fairly square, and so it was pretty easy to go back and forth from those to 6x6cm. Well, I picked up a 5x7 a year and some ago, and it has become my favorite format. This weekend, I went out to shoot with one of my photo buddies, and didn't feel like bringing anything big, so I grabbed my Graflex 22 TLR and my Contax G1 (I had 1/3 roll of color neg in it I wanted to finish off). I can of course still compose to square, but it no longer felt natural or comfortable. My perception has changed; now I see in the elongated rectangle of 5x7, or the really elongated panorama of 5x12. How have you all experienced this, if you've done some format switching? Have you settled on a different aspect ratio than you began working in, only to go back later and find out that the original aspect ratio didn't suit your way of seeing anymore? Or do you easily switch between formats?