shadows more descriptive?

[fario]

hello,

how to be more descriptive of the shadows?

example: the shadow of the geode. The shadow is too flat.

with a cutout on the sharper edges.

I try to put a lamp, an object emissivity for this but to no avail.

thank you in advance.

Antoine

[fario]

Is it possible to implement a setting function of shadows?

for example: three factors of hardness of the shadow.

In order to have soft or hard shadows.

thank you

Antoine

[JeffM]

You will need to use an environment with a much smaller and more intense light source. Try the hdri-locations_urban_4k environment which has a clear sky with a bright son. This should produce a sharp shadow.

[fario]

yes indeed, the shadows are harder with your example.

but...:

I like to know why the pictures with hdri landscape, generate shadows harder, please.

[JeffM]

This is how real lighting works. A small bright light source produces sharp shadows (like a spot light, or the sun), while large, softer light sources produce soft shadows (such as the large panels in the studio lighting environments).

[Dylan]

Jeff is right, that's how it should work. Play around with the different environments and watch how they affect the shadows. In a few minutes you will understand the importance of choosing the right environment for the look you want.

[fario]

merci

[seblezinzin]

Yes, it's a very good idea that into next Version of Keyshot, we have two options : smooth and sharp shadows.
But not exclusively with hdri but in interior renderings too, with emissive materials (lamps) for example.