Explanation of intelligent ISO and intelligent exposure?

~tc~

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I got the David Busch GF1 book hoping for details on these and other features, when to use, what they will do, etc. I'm about 3/4 of the way through the book, and haven't seen anything other than these features exist. TBH, ive been pretty disappointed so far - thankfully, I got it on Kindle (for iPad) so no trees had to die for it.
 

Danny_Two

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Not sure what you mean, the iA setting usually just ramps up the ISO to give a faster shutter speed and greater depth of field similar to how a compact camera would.
 

~tc~

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Like, what is the difference between auto ISO and iISO?

I haven't read, or know much at all about iExposure
 

ginggreenaninja

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Auto ISO uses the light meter like a compact to determine the best ISO.

iISO in all Pannys uses zones in the image area to detect subject movement and ups the ISO for faster subjects so that the camera can run a faster shutter speed to reduce blur caused by subject movment.

intelligent exposure is a different feature all together. It comes on in iA mode as a form of backlight compensation. You can see it work if you try to take a portrait with the sun behind the subject and switch between "P" & "iA", watch the subject become clear in iA.
 

ginggreenaninja

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nseika

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intelligent exposure is a different feature all together. It comes on in iA mode as a form of backlight compensation. You can see it work if you try to take a portrait with the sun behind the subject and switch between "P" & "iA", watch the subject become clear in iA.
Is this the same as using different ISO value in different zone of the sensor ? Like higher ISO in darker area
 

ginggreenaninja

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Is this the same as using different ISO value in different zone of the sensor ? Like higher ISO in darker area
That's right. Intelligent Exposure aplies a higher ISO to the darker areas to boost brightness without creating noise in other areas or boosting the whole image which would cause over exposure in the already bright areas.
 
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