Why is the Viewport rendering completely different from the Camera rendering (Cycle, Transparent material with refraction) I have a simple scene with an &quot;Image as plane&quot; and a full transmission &quot;hyperbolic lens&quot; looking at it (scene built from the indications given at https://arachnoid.com/blender_graphics/index.html).
When I look at the viewport, I get a nice rendering (cycle progressive view mode).

When I ask for a camera rendering I get a strange sphere in the middle of the rendering, with a very strong magnification.

Any idea of what causes this discrepency? I would like to have a rendering w/o this artefact (if it's one).
in the inspector click icon of the filter or funnel

and enable the option that looks like a camera and the one that looks like a screen to the left of the camera


are there any objects with camera on but are hidden? or on in the camera but off with the screen?

alternatively is there a modifier that is different in the viewport vs render?