I make my own watercolours and I don't think that it has something to do with the amount of binder. The binder is Gum Arabic not the honey, glycerine, Ox Gall or whatever else manufacturers add in the mix.
Some pigments of course have the tendency to dry harder particularly the earth ones. Viridian also dries really hard and sometimes cracks if you don't add something like honey of glycerin to keep it more moist in the pans.
But even these kind of pigments rewet normally and load a decent amount of paint on your brush without that need to scrub with your brush.
The Kremer YinMn blue that Oto Kano tested didn't. It didn't look - at least to me - like a regular hard drying kind of paint as it didn't release any amount of colour on her brush and it looks at least on the video like hardened clay or something similar.
Whatever is the case with this colour I don't really see the point of paying that much money to switch to a blue paint that looks like a slightly more opaque version of a dark Cobalt Blue or an Ultramarine and that because it doesn't even offer something different on regard of its mixes with other colours.
Even the colour separation that you mention on your review is visible only from very close and not from distance.
If you need a magnifying glass ( or zoom lens) to figure out what is the difference... then there is no difference because nobody is going to notice it unless you tell them. lol
I make my own watercolours and I don't think that it has something to do with the amount of binder. The binder is Gum Arabic not the honey, glycerine, Ox Gall or whatever else manufacturers add in the mix.
Some pigments of course have the tendency to dry harder particularly the earth ones. Viridian also dries really hard and sometimes cracks if you don't add something like honey of glycerin to keep it more moist in the pans.
But even these kind of pigments rewet normally and load a decent amount of paint on your brush without that need to scrub with your brush.
The Kremer YinMn blue that Oto Kano tested didn't. It didn't look - at least to me - like a regular hard drying kind of paint as it didn't release any amount of colour on her brush and it looks at least on the video like hardened clay or something similar.
Whatever is the case with this colour I don't really see the point of paying that much money to switch to a blue paint that looks like a slightly more opaque version of a dark Cobalt Blue or an Ultramarine and that because it doesn't even offer something different on regard of its mixes with other colours.
Even the colour separation that you mention on your review is visible only from very close and not from distance.
If you need a magnifying glass ( or zoom lens) to figure out what is the difference... then there is no difference because nobody is going to notice it unless you tell them. lol