Best Way to archieve Clean and (very) sharp renderings

[ts_berlin]

Hi, a question to the forum

I saw this pictures from the forum. I never get those perfect clean and adorable sharp renderings!
How I archieve such clean and sharp images? Noise less 1%? Large Renderings..? All in the post.....?

Some Hints will be great

best, Tom

[James]

Its too sharp for my tastes, but it'll be a combination of those things. Noise below 1% sounds unnecessary to me, but a larger rendering scaled down for the web will look sharper. Plus its probably been sharpened in post. Try this:, get an image of yours in photoshop, duplicate the layer and put it above the original. On this new layer run Filter>Other>High pass> radius of 2-4 - something like that. Then set this new layer to soft light or hard light and adjust the opacity.

[pixelab]

As far as I can tell, there is :

- Chromatic aberration (not really shaprening)
- Some sort of shapening filter (or bad AA, but I don't think so because the grain is really limited), you see that mostly on highlights
- Very low noise indeed - long render time or a big farm... depends ofc on the resolution, if it's pro work, it's minimumm 4k renders

That being said, a noisy 4k render (80/100 passes) resampled in 1200 pixels wide will be more or less noiseless. A lot of images looks nice in small resolution but hurt the eyes in bigger size.

To try custom sharpening, you can use in photoshop

- duplicate layer
- high pass (play with the numbers/ low values = sharpening/ high values are more like "clarity" tool in lightroom)
- put this layer on soft light blending and play with opacity

This tends to accentuate existing grain so working on a noisless image is better (you could always add grain afterwards for "artistic" reasons)

Best would be to have a word from the artist who made the image ;)

[pixelab]

Its too sharp for my tastes, but it'll be a combination of those things. Noise below 1% sounds unnecessary to me, but a larger rendering scaled down for the web will look sharper. Plus its probably been sharpened in post. Try this:, get an image of yours in photoshop, duplicate the layer and put it above the original. On this new layer run Filter>Other>High pass> radius of 2-4 - something like that. Then set this new layer to soft light or hard light and adjust the opacity.

Haha, we answered with the same workflow in photoshop at the same time ;)

Try values as high as 40 / 50 or even 100 on 4k renders, it sometimes yields intresting results.

[ts_berlin]

thx for the hints!

40-50/100 for High pass....? wow I never tried so high settings...I'll try

[fa2020]

Don't you think this photo is sharp too?
https://forum.corona-renderer.com/index.php?action=dlattach;topic=14504.0;attach=57347;image
I used no sharpening post-production, no scaling down, the only manipulation was color adjustment.

[ts_berlin]

yes...because the textures (especially the leather) are sharp, maybe these is another reason......but I mean pics with more distance. Look at this: the flowers and the contour of the eames-chair are very crisp