pounder35 wrote:
Full program on most camera will let the camera decide when flash is needed. I prefer to make that decision depending on lighting and the layout. If flash is needed I'd rather go with ambient lighting even if I have to use a tripod and longer exposure time. Using a flash usually will cause harsh shadows unless you are using multiple flash units or using bounce. Just my opinion. :thumbup:
pounder35,
Good opinion, and valuable experience.
Many cameras work just as you described, we were discussing the Canon EOS model of digital bodies. Where Full Program is the same as Full Auto.
The Canon EOS line does have Full Auto, and it has Program. There is a difference in operation. With Canon bodies Full Auto works as you described.
If the Canon bodies did not have both Full Auto and Program we would have to revert to full manual with light meters in hand.
The option of using Program, with the back button Exposure Lock, is to allow the camera to make critical adjustment during a busy shoot, and not lose critical action cameo shots.
There is also a thread in this group, today, about Real Estate photos inside the house where there are outside facing windows. HDR can be used to capture the indoor light and tone down the window light, but it has some serious drawbacks. Standard on board flash and external flash units can be used but they have exposure problems, as well. All other methods result in the window light blowing the windows out into white blobs.
Using ETTL with the camera and compatible flash units, bouncing light off the ceiling and side walls results in even lighting of the interior, and nicely exposed window light. For extra effects you can dial in Exposure Compensation (Ev) for the windows, and add Ev for the flash (provided the ceiling and walls are white).
Yes, we can dial this all in with manual controls, we can get similar effects by using Av and Tv settings, but will the flash be controlled by the camera? Most of the time, not. It will become confused by all the semi-automatic values it receives through the lens.
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My opinion, I want to get the shot with good composition, timing just right for the subject action, or reaction, and let the camera worry about most of the Grunt Work. We have marvelous, computerized, cameras, why not use their power to our benefit.
It is true, the camera cannot do everything perfectly, that is why we need to know how it performs its magic, so we can override it when necessary.
Michael G