one without AF
manual focus only
where you have to set the apeture and shutter speed yourself
A camera like this will force a person (especially people these days) to learn about optimal focus, the trade-offs between shutter speed and apeture in balancing DOF vs Stopping motion.
The auto everthing most up to date cameras are the worst at improving one's photography skills. (IMO)
One of the reasons I like the E-P1 so much is how it zooms in when you manually focus. It's been a long time since I've had a digital camera that let you manually focus effectively. Especially when working with fast lenses, the AF systems of modern camera's often pick the wrong spot to focus on. (E30 not far behind but have to press the OK button to zoom in)
One step removed from manual exposure control is the way I normally shoot which is apeture priority mode always ready to dial in exposure compensation.
What is nice about modern digital cameras is the easy ability to change the ISO as needed. There was no easy analog in film days (other than rewinding the canistor and switching rolls and jotting on masking tape how many dark exposures to go back to to re-use the roll you just took out). (or, film backs on MF which was easy)
But even more important than learning how to be the master of the variables in your shot, is the composition and execution of the shot. This is where the photographic artist comes into play. The camera plays little role in this other than expanding your options on the fringes a bit. (ok, except in long exposure night photography where the sensor design makes some cameras not near as good as others)
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John Mason - Lafayette, IN
http://www.fototime.com/inv/407B931C53A9D9D