KeyShot Forum

Technical discussions => Rendering => Topic started by: mo on April 22, 2017, 02:52:40 am

Title: shadow gets too sharp
Post by: mo on April 22, 2017, 02:52:40 am
Rendering same model in Keyshot and Arnold,

I love Keyshot render but there is one thing stopping me.

around pocket on attached picture, the edge of pocket gets very sharp shadow edge.  I have same issue on other small parts on this model.

Are there way to reduce this sharpness??

Thanks!
Title: Re: shadow gets too sharp
Post by: Speedster on April 22, 2017, 02:40:15 pm
I must say the KeyShot render is way superior to the Arnold, especially in the lighting and texturing.  The shadow hardness depends entirely on the HDR you choose- there are many that throw soft shadows, without washing out the textures, if that's what your goal is.  I suggest playing with all of the HDR's available and see the difference.
Bill G
Title: Re: shadow gets too sharp
Post by: mo on April 22, 2017, 04:02:26 pm
awesome, thanks for the info!! helps a lot...!!
Title: Re: shadow gets too sharp
Post by: Will Gibbons on April 24, 2017, 06:15:00 am
Also, if you're lighting with physical lights, you can often adjust the 'radius' which will soften the cast shadow.
Title: Re: shadow gets too sharp
Post by: mo on April 24, 2017, 01:20:27 pm
great, thanks a lot!
Title: Re: shadow gets too sharp
Post by: guest84672 on April 25, 2017, 06:46:51 am
Another thing you can do is turn off "sharp shadows" in the render dialog under "Options -> Quality-Advanced Control".

That will give you softer shadows, but may have some unwanted side effects depending on the materials that are being used.
Title: Re: shadow gets too sharp
Post by: Speedster on April 25, 2017, 03:05:56 pm
Sometimes I use softer shadows, but also want them darker.  So I pull a .png and clown pass at render time.  Then I duplicate the layer in Photoshop, select the model on the clown and then delete the model leaving only the shadows.  This in effect "doubles" up the shadow, and you can also duplicate the shadow layer for even darker shadows.  There are other ways to do this, but this is simple and works for me.

Also see https://www.keyshot.com/forum/index.php?topic=14442.0 (https://www.keyshot.com/forum/index.php?topic=14442.0) for more tricks.

Bill G