Re: Comments on Image Capture draft

On 09/12/2014 10:53 PM, Peter Thatcher wrote:
> Those all look very useful (white balance, aperture, shutter speed,
> manual focus distance, focal length relative to 35mm) but I would like
> to point out that controlling the ISO is useful even if aperture and
> shutter speed are automatic.  In fact, that's the most common setup
> for my DSLR: I manually set the ISO and keep the aperture and shutter
> speed automatic.

I'd just like to insist that everything we define has an agreed-upon, 
referenced definition.

I know what ISO meant when we were talking about grains of silver in 
plastic; I don't know what it means in terms of photons hitting CMOS 
sensors.

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> On Thu, Sep 11, 2014 at 12:47 PM, Cullen Jennings (fluffy)
> <fluffy@cisco.com> wrote:
>> Need an attribute to set the white balance color as an integer in degree kelvin.
>>
>> ISO does not makes much sense without aperture and speed. What does an implementation do when the ISO gets changed? How can an application use these to get the desired effect. Suggestion to add aperture and speed. On many devices the aperture is fixed and trying to change it would fail.
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>> Lots of camera support a "sport mode" vs "portrait mode" or something like that. I would be nice to be able to tell camera if it was doing aperture priority or speed priority.
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>> For all the things like brightness, shapness etc, need to say what the range is and how the browser implements them. (BTW - I think several of these might be better as floats than longs)
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>> Need to be able to set manual focus distance.
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>> Having the zoom be in something that can be mapped a field of view instead of relative lens would be much more useful for application programmers. So for example, it could be specified in what it would be in mm relative to a 35 mm sensor. Or it could just be represented as a ratio of sensor size.
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Received on Monday, 15 September 2014 10:09:38 UTC