The texture looks correct in the preview but renders badly with vertical artefacts and looks very low resolution. What's going on here?

Preview looks correct

The render is badly damaged

This render, focussed on just the label (128 samples) shows the damage:

Strips of vertical clipping

  • $\begingroup$ It is not the texture that has poor quality, it is the whole render. You seem to be rendering at a low resolution $\endgroup$ – Duarte Farrajota Ramos Aug 27 '18 at 12:40
  • $\begingroup$ I rendered at 4096 samples. $\endgroup$ – Richard Holyoak Aug 27 '18 at 12:41
  • $\begingroup$ That sample count seems unnecessarily high for what seems like an outdoors scene. Anyway your issue is not sample count, it is render resolution, as in pixel size of the picture $\endgroup$ – Duarte Farrajota Ramos Aug 27 '18 at 12:43
  • $\begingroup$ I've added a closeup on the label and simplified the node so the image texture node goes directly into a diffuse BSDF node then to the material output node. $\endgroup$ – Richard Holyoak Aug 27 '18 at 12:44
  • $\begingroup$ Looking at the "750ml" part in the bottom right corner of the label the 7 and the 0 are clipped away leaving just "5ml" visible. $\endgroup$ – Richard Holyoak Aug 27 '18 at 12:51

The shrinkwrap modifier must be applied first, before the subsurface modifier.

Shrinkwrap at the top

Produces a better render:


It seems low resolution rendered image. You should check the resolution of render image. enter image description here

  • $\begingroup$ It's not related to resolution or sample count. I've added another screenshot close up to the label. The vertical clipping is very clear in it. $\endgroup$ – Richard Holyoak Aug 27 '18 at 12:49

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