t.linn NICE REPORT!... I have a question? When using AEB...can you have exposures that are longer than 30sec. ...or do you have to put the camera on Bulb for any shutter speeds longer than 30 sec?, (like the 5D Mark II).
I do a LOT of HDR shooting and I have a Promote Unit (which is like hauling around a colostomy bag with my camera with 2 tubes, manual set-up. etc.. ....NOT a fluid way to work to say the least....but the only way I can shoot over 3 AEB shots without touching the camera... even with the Promote Unit I HAVE to touch the camera to get any exposures over 30secs.). The expanded AEB feature alone on the MkIII may get me to sell my II and purchase the upgrade...but being able to go longer than 30sec. in a bracket will be icing on the cake.
I don't understand why this is such a "slow-to-come-about" feature. There is a computer under the hood here...it should be pretty straight-forward to satisfy what I would call a basic photographic need. Timed long shutter releases. Right?
Canon DSLR cameras are limited to a maximum shutter speed of 30 sec, period. All shooting conditions, including AEB or HDR options have to live within that constraint. To automatically achieve exposures longer than 30 sec requires a fundamental camera design change - extending the 30 sec maximum to something larger. But what would you pick? Right now it's controlled by BULB!