[Nhcoll-l] Micro color chips

[Elizabeth Nunan]

Hello list!

I posed the micro color chip question to Dan Kushel, Professor of Documentation and Imaging at Buffalo State College Art Conservation Dept and he provided the following:

"Yes
 that is a problem.  There are none around that I know of.  But if the 
questioner shoots in camera RAW, he can just set the microscope to a 
lower magnification, shoot a standard neutral reference (illuminated, of
 course,  with the same illumination he is using for the higher 
magnification), and then just white balance all his shots at once by 
synching with the reference shot.  We do that here routinely.
I
 think that should do it, unless I am misunderstanding his question.   
(You can do the same with a transmission microscope, by taking a 
reference shot of the empty illuminated field.)"

I hope that helps!

Elizabeth Nunan


Associate Conservator


Natural Science Collections Conservation


American Museum of Natural History


212.313.7532


--- On Thu, 10/4/12, Bentley, Andrew Charles <abentley at ku.edu> wrote:

From: Bentley, Andrew Charles <abentley at ku.edu>
Subject: Re: [Nhcoll-l] Micro color chips
To: "nhcoll-l at mailman.yale.edu" <nhcoll-l at mailman.yale.edu>
Date: Thursday, October 4, 2012, 3:56 PM



 
 




Paul 
   
I was recently on the hunt for a color patch that we could use for taking images of specimens in alcohol and kept all the links of those that I found (never did find one that would work in alcohol
L) 
   
http://www.munsellstore.com/default.aspx/MenuItemID/499/MenuGroup/Home.htm 
http://www.amazon.com/CameraTrax-24ColorCard-2x3-White-Balance-Guidebook/dp/B004QXU8VI/ref=sr_1_3?ie=UTF8&qid=1342555441&sr=8-3&keywords=macbeth+color+checker 
http://www.bhphotovideo.com/c/product/286652-REG/QP_Card_GQP201.html 
http://www.bhphotovideo.com/c/product/26662-REG/Kodak_1527654_Color_Separation_Guide_and.html 
http://store.rmimaging.com/colorcharts.aspx 
http://www.digitaltransitions.com/product/targets/colorgauge-nano-target 
   
Not sure if any of these will help.  The last one is a nano-target that may be of use… 
   
Andy 
   

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 Andy Bentley

 Ichthyology Collection Manager

 University of Kansas

Biodiversity Institute 
 Dyche Hall

 1345 Jayhawk Boulevard

 Lawrence, KS, 66045-7561

 USA



Tel: (785) 864-3863

Fax: (785) 864-5335 

 Email: abentley at ku.edu   
http://ichthyology.biodiversity.ku.edu 
   
SPNHC President-Elect 
http://www.spnhc.org 
   
                           :                 :    

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 }<(((_°>.,.,.,.}<(((_°>.,.,.,.}<)))_°>

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From: nhcoll-l-bounces at mailman.yale.edu [mailto:nhcoll-l-bounces at mailman.yale.edu]
On Behalf Of Paul Callomon

Sent: Thursday, October 04, 2012 3:40 PM

To: NH-COLL listserv (nhcoll-l at mailman.yale.edu)

Subject: [Nhcoll-l] Micro color chips 


   
Folks, 
   
I am taking photographs at high magnifications (4-5x macro; field size roughly 6x4 mm) and would like to insert a calibrated grey chip for accurate color reproduction. Commercially available chips I have seen are all printed on paper or
 plastic, and at those magnifications the ink surface is so rough that one cannot accurately sample the color from it any more. Does anyone know of a color chip specifically designed for macro/micro work? 
   
Paul Callomon 
Collections Manager in Malacology, Invertebrate Paleontology and General Invertebrates 
The Academy of Natural Sciences of Drexel University 
1900 Benjamin Franklin Parkway 
Philadelphia, PA  19103 
callomon at ansp.org 
Tel. 215-405-5096 
ansp.org 
Follow us:
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Join us as we celebrate the Academy’s 200th anniversary with a year of exciting events, special programs, and our bicentennial exhibit,
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