Macbeth Nano colorchecker

JW · Post by JW » Tue Jul 19, 2011 12:28 pm

Any one have experience with this color target - size is 0.56 x 0.81 inches, but is somewhat expensive at advertized $125 at EO http://www.edmundoptics.com/onlinecatal ... uctID=1815

ChrisLilley · Post by **ChrisLilley** » Tue Jul 19, 2011 1:19 pm

I'm puzzled why they have 30 patches instead of the 24 patches that the normal sized ones have.

Charles Krebs · Post by **Charles Krebs** » Tue Jul 19, 2011 1:23 pm

I have some experience with the "full size" MacBeth ColorChecker chart. (X-Rite now, for about 5 years). I had not seen this "nano" product before, very interesting however.

Chris... they've added six additional neutral squares.

See more here:

http://www.imagescienceassociates.com/m ... alyzer.pdf

Product here:
(first time I've seen Edmund look like a "bargain"

)
http://www.imagescienceassociates.com/m ... de=TARGETS

rjlittlefield · Post by **rjlittlefield** » Tue Jul 19, 2011 1:30 pm

Target sizes are:
Nano: 1 5/8" x 1 3/8"
Micro: 9/16" x 13/16"

Interesting nomenclature!

--Rik

Charles Krebs · Post by **Charles Krebs** » Tue Jul 19, 2011 1:39 pm

Rik,
The ImageScienceAssociates site has their "nano" and "micro" mixed up in various locations and literature....
The "nano" is the smaller.

Too bad they did not keep the squares the same as the X-Rite ColorChecker Passport. Then you could quickly use the X-Rite software to create camera profiles for raw conversion. Some of the "exotic" diffusers we use (yogurt containers and such

) play games with the color. It would be nice to be able to quickly profile a set-up.

DQE · Post by **DQE** » Fri Jul 22, 2011 11:22 am

The extra neutral patches might be useful in some circumstances, I suppose.

A related topic (if it expands, it should have its own thread):

Does anyone calibrate their camera body/bodies using Adobe's somewhat new method and an associated calibration chart like the X-Rite Passport Color Checker?

Here's a review:

http://www.northlight-images.co.uk/revi ... ort_1.html

More info here:

http://www.xrite.com/company_press_room ... m&News=632

http://www.northlight-images.co.uk/arti ... r_acr.html

http://www.northlight-images.co.uk/stuff/?p=518

--------------------------------------------

I gather that Adobe only checks a single camera body when they establish their camera body profiles for Photoshop. If so, hopefully the camera manufacturer makes sure the supplied body is within spec. In an ideal world, I would like to measure my own camera calibration but only if I were reasonably confident that I wouldn't make things worse!

However, even if I were to assume that the Color Checker test pattern has been perfectly manufactured and calibrated, I would still need an accurate and repeatable, quantitatively appropriate, and repeatable light source to illuminate the thing with.

Am I missing something here or is striving for a quantitatively calibrated, standards-tracable photographic imaging chain not approachable outside of a well-equipped scientific laboratory?