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According to one coach, the topology is impeccable. Is it possible to correct these depressions by improving the topology? At different subdivision levels, distortions look different.

The blend file.

thank you

enter image description here

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  • $\begingroup$ I agree with your coach, the topology is good, it looks bad because of the particular shading you've chosen but the render should be ok $\endgroup$
    – moonboots
    Mar 9 at 14:42
  • $\begingroup$ @moonboots >>it looks bad because of the particular shading ________________________________________________________ it is a matcap $\endgroup$
    – blenduser
    Mar 9 at 15:06
  • $\begingroup$ Yes I meant the matcap shading $\endgroup$
    – moonboots
    Mar 9 at 15:08
  • $\begingroup$ @moonboots________________________________________________matcap - rendering on a simplified engine with preset light sources and materials. Is not it? If we reproduce similar conditions in Cycles, we see that distortion occurs in any case. (on a certain material at a certain angle and lighting - the distortion is most pronounced) Screenshot: i.imgur.com/AXLxT7c.png $\endgroup$
    – blenduser
    Apr 20 at 17:34
  • $\begingroup$ If it's noticeable for your use, there's no other solution but to increase the vertices amount $\endgroup$
    – moonboots
    Apr 20 at 17:36

2 Answers 2

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i am not sure why you wanna have a subdiv modifier - but what about using a bevel modifier instead?

enter image description here

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  • $\begingroup$ >>why you wanna have a subdiv modifier ___________________________________________________________________it just a lessons, tutorials about moddeling with subdiv. Subdiv modifier - necessary condition. $\endgroup$
    – blenduser
    Apr 20 at 17:10
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I don't totally agree with your coach, but I'm no topology expert. Feel free to contradict me if I say something wrong.

The pinching you are experiencing is due to the diagonal edge being longer than the 2 adjacent edges. It streches the surface along the diagonal. On the right side is an exagerated version to visualize the issue.

Comparison of different pinching

You can move the vertex along the edges by pressing G+G and moving the cursor.

At most, the diagonal should probably be the same length as the 2 surrounding edges. With a bit of testing, I would even suggest giving the diagonal edge a smaller length (as in my screenshot or even less).

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  • $\begingroup$ Your proposal partially smooths out the distortion, while changing the topology (shape, outline) of the edge. The figure's edge doesn't look like before. Would like to remove the distortion completely, without changing the location of the support loops, without distorting the original topology $\endgroup$
    – blenduser
    Apr 20 at 17:45
  • $\begingroup$ You originaly asked about improving the topology. And I don't see how you could resolve your issue without changing the topology. Maybe someone will ! $\endgroup$
    – Lutzi
    Apr 20 at 17:56

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