G10 AE lock button (star) to “rough in” exposure

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drcolyn

Contributor
Messages
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Location
Langebaan South Africa
# of dives
100 - 199
Using G10 AE lock button (star) to “rough in” exposure

In the 2009 review by the Backscatter team to find the best point and shoot UW camera the following was written of the G10.

“The Canon G10 quickly won over the staff as the best compact camera on the market.
Our favourite manual control is the (*) button on the back which activates momentary auto exposure. A quick press of this button will rough in your exposure automatically and then return you to manual mode for refinement. These are features we'd like to see on $8000 SLR cameras!”

Has anybody tried out this technique and would you recommend it?
I have tried it only once and quickly decided against using it as I have preset my manual settings (C1 for macro and C2 for wide angle). With my skill level it takes a bit of time reset everything again underwater.
If I sound confused please bear with me as I explain what happens. As said before I have a basic macro setup in C1 mode. Obviously these settings differ (F8 & 1/125 ISO 100) quite a lot from what the camera would have selected otherwise what would be the point of not using the Auto mode in the first place.
So when you press the AE lock (star) button the settings (aperture and shutter speed) are changed so you can see what the camera will use in auto mode.
There is however no way that I can see to return to the C1 mode settings as they were. If one is returned to Manual mode what happens to other settings like white balance and Macro that was selected before pressing the AE lock button.
 

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