On Apr 29, 2015, at 3:31 PM, Dimitri Katsaros <dcka@yahoo.com> wrote:
I am shooting macro, later down the line possibly getting into micro, and was wondering if there exists a color checker card the size of a stamp or smaller. If not, are there any other solutions for getting color correct images at this small a subject size?
Your local paint shop should be able to match all 24 of the ColorChecker patches, with the caveat that some places with older setups have gamuts smaller than a couple of the patches. The matches will be spectrally accurate to within the same kind of precision as you see in commercial charts, especially after they've been used a bit. I'll also note that some places will be happy to sell you pint-sized "samples" that'll be more than you'll need for a lifetime's worth of charts...or at least the shelf lifetime of the unused paint.... Armed with such a set of paints, you can make charts as big or as small as your paintbrushes permit. It's also worth noting that, while the standard ColorChecker 24 patches are a pretty good sampling of the color space, there's nothing at all sacred about them. You may wish to consider making your own selection based on the actual pigments you're going to be photographing. ...and, as a last "spend no money" option...you can always individually photograph micrographs each of the 24 patches and use an image editing application to montage them into a single frame, or otherwise combine the data for your profiling application. b&