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[OM] Re: Focus stacking

Subject: [OM] Re: Focus stacking
From: "Bill Pearce" <bs.pearce@xxxxxxx>
Date: Wed, 30 Apr 2008 18:24:56 -0500
I have fiddled with Heilcon software, and think it has great possibilities. 
I've seen other's results, and it seems remarkable. Just like the 
foolishness on CSI.

Bill Pearce
----- Original Message ----- 
From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Wednesday, April 30, 2008 6:12 PM
Subject: [OM] Re: Focus stacking


> It's not the way I first got the app but apparently today you have to
> join this Yahoo group <http://tech.groups.yahoo.com/group/combinez/> and
> download the files from the group's files section.  I just noticed
> there's a later version available.
>
> Chuck Norcutt
>
> Rand E wrote:
>> Chuck,
>>    Would you post the URL where CombineZM can be had.
>> Thanks,
>> 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
>>>
>>> ==============================================
>>> List usage info:     http://www.zuikoholic.com
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>>> ==============================================
>>>
>>>
>>
>> ==============================================
>> List usage info:     http://www.zuikoholic.com
>> List nannies:        olympusadmin@xxxxxxxxxx
>> ==============================================
>>
>>
>>
>
> ==============================================
> List usage info:     http://www.zuikoholic.com
> List nannies:        olympusadmin@xxxxxxxxxx
> ============================================== 


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