https://drive.google.com/open?id=1FfuVvYt_DbUuclMHGkbeY2ypAfEjg5ct
I have partially blurred my first Matcaps, because when I tried modeling with them they overloaded me. Initially I put lines and boxes to show the relief better, while you check a model all the details are appreciated, but while sculpting they confuse.
I leave a capture of the two versions, apparently they vary little, but when you model you notice a lot.
I was thinking this exact thing. I don’t know if preset system development will extend to matcaps, but it would be pretty useful to be able to change various aspects of default matcaps and save them as needed.
Hi @pablovazquez,
This mocap can be used to test models for surface irregularities while modeling.
It doesn’t look nice with the waspbot so I attached an image with Suzanne for a clearer example.
It’s been discussed above by @So3Datel too.
Below is the link to the matcap .exr and attached images of matcap and sample.
Cheers!
Pablo
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Here are two matcaps that I hope you find useful. The reflection check matcap is set up as well as possible with near perfect AA and 32 light and dark bands (hopefully just the right amount). I have tested both quite a bit to ensure they are high quality.
Hope you like them!
EDIT: forgot to make 1 post per matcap.
Hope the jpg matcap and the possibility to add them will be removed forever since 2.8 viewport is color managed.
Otherwise it’s confusing for peeps not aware of color space stuff, plus it’s an aberation to color managed an already baked 8bit jpg (even linear jpg).
But I know it’s WIP an perhaps not the priority.
We definitely need something like this. Maybe a grid, vertical variation, or the ability rotate matcaps (maybe just in 90 degree increments) would be useful too?
An attempt at creating a hybrid of both horizontal and vertical reflection checking.
I used low frequency horizontal reflections and high frequency vertical reflections. Also tested to ensure quality. The high frequencies are a little blurry at sharp viewing angles. However, overall it works very well.
The chromatic aberration gives it a very nice look, btw. Well done!
This is it. That’s where it’s at! 
Yeah, this is a pretty good start – I hope something like this one gets included.
But man… those blurry edges. I almost want to say that Blender needs a dynamic, procedural, matcap system for things like this as the 512x512 resolution of a static image is reaching its limits here. That, or an integrated curvature analysis engine that will heat-map visualize the problems on your mesh 
I really like the procedural idea.
That’s how I designed it!
I work in Design in the Automotive industry and I have to say, they would be a killer features for sketch modelling. Easily making blender best in class for that!
I have to say that such reflection pattern should not be too hard to implement as a nodetree for eevee. And that would be perfectly smooth since it will be procedural.
better, I have done several tests with matcaps and patterns, and I have not uploaded them because they are not worth it. Apart from pixelated only the lines that cross the center or the rings for the edges provide useful information, the rest make water.
Proving HISEROD matcap, I see that it works much better than my tests.
