Originally posted by Kunzite It sounds great, I mean it, really
great. But I have no idea what you're talking about
Can you give an example?
Modes are a poor way to specify photographic parameters. I would like to go back to a system more common to certain film bodies, where the three primary photographic parameters -- aperture, shutter speed and ISO -- have dedicated control dials. Of course in film days aperture was on the lens, but there is no reason not to have it on the body instead. Each dial would require an "A" setting to put it into automatic.
A modeless design combines complete flexibility with the ability to memorise all functions and use the camera as an extension of one's body. There is no need to think of what mode you are in before knowing what controls perform which function. A glance at the camera shows all important settings. This is very much an application of basic industrial design principles. (Read Donald Norman on this.)
As an example look at the Canon G10, which fits three dials in a much smaller form factor. But this layout could be improved significantly for an SLR. The left dial (ISO) would go where the mode dial is currently. The other two would be where the shutter speed dial used to be, and where the top LCD is now. The dials can overlap a detente on the body edge so they can be twirled easily, much like the current front and rear dials.
There would be no need (and no room) for a top LCD -- good riddance! This panel is a kludge that comes about largely because we are constrained by modes and hence cannot tell what our camera is doing and how it is set. The very fact of an LCD shows the design is poor. Instead, important data needs to be in the viewfinder so we can operate the camera without taking it from our eye.
All other buttons can then be larger and variously shaped to improve their affordance. How the menu navigation is set up and which features are available for quick access is another area ripe for improvement. I believe that once the primary controls are fixed there is some latitude for providing customisable soft buttons, so each photographer can choose the functions they need quick access to. Sometimes I want multiple exposure to be more handy. Others might prefer WB or SR. I don't think it makes any sense littering the camera with buttons to cover all possibilities.