>> On Sep 5, 2019, at 8:57 AM, Eric Weir <[email protected]> wrote:
>> 
>> What determines the size of the image I get with my camera, i.e., my phone? 
>> Is it always the same? Is iso a factor?
> 
> The number of pixels in a full frame capture will always be the same.

... ISO will affect how much noise is apparent in the image. With the teensy 
little sensors in a phone camera, the lower the ISO the better the noise 
behavior and the better the tonal scale. With camera apps that allow you to 
control ISO on the iPhone. It's best for good photos to keep the ISO under 100 
whenever you can. 

But of course, too long an exposure can cause camera movement which also kills 
image quality. So you have to work to the limits of the device's capabilities. 
:-)

G

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