I have been thinking about this and how does stitching software deal with
changes in iso i.e. the shutter and aperture may be fixed but it changes iso to
make the image lighter or darker. there will then be a difference in the grain
between shots, can it handle this?
Sent while mobile
On 27 Apr 2012, at 20:44, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> No future insight is required nor any knowledge of the order of
> exposures. We know the left is brighter than the right and we know the
> aperture is fixed. It doesn't take much in the way of prognostication
> skills to predict that the shutter speed on the left will be faster than
> on the right.
>
> I accept that you're compressing the dynamic range but I would have
> thought that you not only compressed it but evened it. But shooting the
> brightest area in auto mode may compress the dynamic range between shots
> but in no way guarantees sufficient compression with a shot and thus no
> guarantee of no blown areas. I don't have any blown areas in my ETTR
> panos and that's guaranteed.
>
> I'm still hoping you will post shutter speeds so I have a better idea of
> what actually happened.
>
> Chuck Norcutt
>
>
> On 4/27/2012 12:07 PM, Mike Lazzari wrote:
>>> I would assume the camera reduced the exposure on the left to try and
>>> keep the brightness the same as on the right.
>> Don't know why you would assume that. The camera makes the exposure
>> based upon available data. I don't think the technology is quite able to
>> anticipate what I'm going to do a few frames in the future :)
>>
>> Think of it this way. I'm compressing the dynamic range by shooting in
>> AP mode. With no blinking blown areas it's actually easier for the
>> software to blend the image. The entire image is shot and blended
>> similar to a multi-image HDR.
>>
>> Mike
>>
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