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Re: [OM] Dude - Who stole my 0.56ms?

Subject: Re: [OM] Dude - Who stole my 0.56ms?
From: "Jim Nichols" <jhnichols@xxxxxxxxxxxxx>
Date: Fri, 9 Apr 2010 23:00:56 -0500
I guess my "best" solution is to choose my subjects more carefully.

Thanks for the feedback.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "Moose" <olymoose@xxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Friday, April 09, 2010 10:55 PM
Subject: Re: [OM] Dude - Who stole my 0.56ms?


> On 4/9/2010 4:17 PM, Jim Nichols wrote:
>> Moose,
>>
>> The thing that confounds me, with macro lenses, and I should have 
>> expected this from the start, is that as one moves in closer to the 
>> subject, the DOF decreases to a ridiculous point.
>
> It's just "do the math" physics. There are some new and very different
> imaging concepts being worked on that may change DOF possibilities, but
> as long as we stick to simple refraction based lenses, the rules are 
> fixed.
>
>> My Leica Elmarit-R 60/2.8 Macro lens requires stopping down to a minimum 
>> opening in order to get the full subject in focus.  I'm sure this is fine 
>> for flat subjects, but just doesn't work out for me, particularly with 
>> flowers.
>>
>
> One relatively recent change is DOF stacking software. You take a series
> of shots with the plane of focus moved in small increments. The software
> merges the sharp parts. I've been meaning to try that, but have by now
> forgotten the names of the apps. I do have a handful of sets of images
> that may work.
>
> I think one trick is to use a focusing rail, rather than refocusing the
> lens. That way, he in focus part of each 'slice' is the same
> magnification, so there is less size matching for the software to do.
>
> Moose
> -- 
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