I use 16:9 exclusively and love it. So does Hollywood, they dumped the old square look for movies and TV years ago. So do computer monitors manufacturers and cell phone manufactures...they dumped the square look too. Pretty much anything with a screen these days is widescreen. Everyone will say...you need to use every little pixel you have on your sensor. Well, using 16:9 still uses all the pixels on the sensor, it just turns off the ones on top and bottom, but the resolution (size of photosites and distance) remain unchanged. I do this because I make lots of home movies and slideshows. My movies now fill the entire screen on my HDTV and I didn't have to sit around all day cropping every image. That was already done. There are CON's though. The printing and framing industries are still stuck in the 60's. Finding a place to print 16:9 images is nearly impossible. And frames, well those have to be custom made. 95% of my images go out over the internet so 16:9 is a perfect match for that medium. When I do need a print, say 8 x 10, I can usually crop to that ratio OK with a 16:9 image. In some cases when I knew I'd be photographing to print, I will temporarily change my aspect ratio back to 4:3. The link below is an example of a slideshow that was done mostly in 16:9, when the page loads, expand to full screen by clicking the icon with arrows point out at the lower right of the screen. These are just my thoughts on the matter. Take from it what you will, but mostly...enjoy the hobby.

http://www.flickr.com/photos/james-frazier/sets/72157651636186746/show

My principal photography subjects are large sea-going vessels or a tugboats as well as occasional birds. I am wondering if I should switch from 3:2 to 16:9 aspect ratio? I understand I will lose some megapixels from the top & bottom. But are there other consequences I may not be aware of if I make this switch for most of my pictures? When it comes to printing, would it look odd to mix 3:2 and 16:9 on a page? I usually buy custom photo books from MyPublisher with two pictures per page on a 15X11.5 page. Any thoughts appreciated.

My principal photography subjects are large sea-going vessels or a tugboats as well as occasional birds. I am wondering if I should switch from 3:2 to 16:9 aspect ratio? I understand I will lose some megapixels from the top & bottom. But are there other consequences I may not be aware of if I make this switch for most of my pictures? When it comes to printing, would it look odd to mix 3:2 and 16:9 on a page? I usually buy custom photo books from MyPublisher with two pictures per page on a 15X11.5 page. Any thoughts appreciated.