Yup, it would. What I need to know is how to subtly resize images. I
thought CombineZM would do that but apparently not. Gotta do some more
reading and research.
Chuck Norcutt
Rand E wrote:
> Oops, I would also guess that that would also change the image size.
> Rand E.
>
>
> Rand E wrote:
>> Chuck,
>> As far as the different magnifications go, I would guess that you would
>> have to focus by moving the camera rather than changing the focus on the
>> lens.
>> Rand E.
>>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> Chuck Norcutt wrote:
>>> Quite some time ago I downloaded some free software that does image
>>> stacking ("CombineZM" by Alan Hadley) but never tried to use or study
>>> it. CombineZM can be used to stack images for improved depth of field,
>>> add exposures (as in astrowork), increase dynamic range, etc. (yes,
>>> there's more)
>>>
>>> Today I noticed the beautiful blossoms on a crabapple tree so snipped
>>> off a small branch and setup indoors to take a series of shots with a
>>> Viv Series 1 90/2.5 macro intending to get all of the blossoms in focus
>>> across the full width of the branch. I ended up with a set of 7 frames
>>> each focused about an inch apart. I started to peruse the instructions
>>> which seemed rather daunting so decided simply to press ahead and see if
>>> I could find the automated procedures. I did but they made a perfect
>>> mess of the result.
>>>
>>> First, I knew that changes in focus were going to cause slight
>>> differences in magnification. But I was surprised to see just how much
>>> the magnification does change. Across the full 7 frames the image
>>> shrank about 3-4%. When I directed the software to do it's thing I
>>> ended up with a series of overlaid images all of slightly different
>>> size. Not what I expected. I guess I may be forced to read the
>>> instructions to figure out how to resize the images for a precise overlay.
>>>
>>> Finally, and I don't know how I'm going to defeat this part, I noticed
>>> that over the 7 minutes I took to take the 7 shots that several blossoms
>>> visibly wilted during the session and sagged on their stems by roughly
>>> their own full width in the 7 minute session. Guess I'm going to have
>>> to get faster.
>>>
>>> Anyhow, anyone have any experience in doing this sort of thing. Any advice?
>>>
>>> Thanks,
>>> Chuck Norcutt
>
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