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Re: [OM] (OM) OT image stitching / panoramas

Subject: Re: [OM] (OM) OT image stitching / panoramas
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Sat, 28 Apr 2012 19:25:27 -0400
It works but don't you think you've lost something?  Based on the 
shutter speeds the three scenes should exhibit overall gradients of 1, 
1-1/3 and 2-2/3 stops.  But they don't.

Chuck Norcutt


On 4/28/2012 1:43 PM, Mike Lazzari wrote:
>>     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.
> With that I have no argument. Nor am I arguing against doing the manual
> exposure method if it suits you. Personally I think it is better to
> assure each frame is exposed without blown highlights/shadows. In scenes
> with a wide dynamic range across the final image this is impossible to
> do (with my technology :)  ) without using AP mode. There is no
> expectation that the exposure will be even across the image as my
> example shows. Compressed, yes.
>
> I checked the shutter speeds:
>
> Mt Baker, Aug11,  8 shots. 12mm, f8, 5 shot @ 1/4000,  1/2000. 1/2500,
> 1/3200.
> This image is pretty evenly rendered since my back was to the sun.
> Slowest exposure was the one with my daughter followed by the fog right.
> <http://www.interisland.net/watershed/mike/PkButte-RRGrade/MtBaker3191-98.jpg>
>
> Grandma's Cove, Aug11, 3 shots  12mm, f8. left to rt; 1/250, 1/160, 1/100
> More of a gradient with the sun out of image left.
> <http://www.interisland.net/watershed/mike/WalkDogs/Aug11/GrandmasCove2257-59.jpg>
>
>
> Turtleback, Oct11, 5 shots. 18mm, f8. 5 shots, left to right; 1/600,
> 1/250, 1/800, 1/800, 1/800.
> Pretty even, Sun behind over left shoulder.
> <http://www.interisland.net/watershed/mike/WalkDogs/Oct11/Turtleback3918-22.jpg>
>
> They appear to have been compressed ~1- 1½ stops. All images received
> some PP.
>
> Mike
>
>
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