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[OM] Drowning in Words

Subject: [OM] Drowning in Words
From: usher99@xxxxxxx
Date: Sat, 29 Mar 2014 20:55:24 -0400 (EDT)
STM writes:


>>;The Barker is closest.  Surface of melting, non-clarified butter.
>>;http://zone-10.com/tope2/main.php?g2_itemId=11786>

>>Taken with the Panny GM1 plus Oly's *iS/L Lens A-Macro H.Q. Converter 
f=40cm*,
>>a two element, achromatic, +2.5 diopter
>>close up lens. 
<http://zone-10.com/tope2/main.php?g2_itemId=12059>

>>Looks like it was made for this lens. :-)

Curious---I am glad it works well as it is  a very small kit indeed.  
Calculation of the  "effective Mag" doesn't seem as straight forward as 
usual.
Usually M=FL prime or zoom/FL diopter which at 12mm for the zoom in 
exif doesn't amount to much---.03 X.  though mag not really changed by 
cropped sensor it is effectively
increased by  .06 X by the diopter, though have never seen these 
calculations for cropped sensors.  I think the lens itself goes to .13X 
or effectively .26X and perhaps with the diopter final display is 
closer to
0.4 X though that is a quick estimation.

Must wait for Dr. Butter  to clarify, Mike
-- 
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