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Does the render always keep getting clearer with higher SL or are there some things that could make the render worse using a higher SL ?

I think if you let the render go too high it will become too noise free and look more CG-ish because of this. this is especially an issue if you are doing very high res renders. That's just my opinion though

The higher the SL, the less noise you'll get. But you'll see decreasing returns. That is, the first 5 make a big difference the next 5 less so, and so on. For me, a final render usually ends up around SL14 or so, but some materials will look great at SL8 while others might not clear up until SL17.

-Brodie

for exterior shots (arch viz) i use sl16 at 4000x3000 px as limit, for interior - sky is a limit...
sl16 seems to be a "magic" turning point - just for me

all good tips. Thanks. It helps me make sense of the results I am getting.

I often render some "problematic/noisy zone" with render region to see what SL is the best.
Then I launch the all render with the good target SL.

David Solito wrote:I often render some "problematic/noisy zone" with render region to see what SL is the best.
Then I launch the all render with the good target SL.

Wasn't there an issue with the SL of a region render compared to the SL in full view? Maybe I'm wrong or it has been fixed...? I seem to get different results.

David Solito wrote:I often render some "problematic/noisy zone" with render region to see what SL is the best.
Then I launch the all render with the good target SL.

Yup, that's my preferred method too.
For interiors SP levels below 18 are barely acceptable for me. Almost all of my images are in the 20-22 range +denoise. Any postwork you do has the tendency to bring out any existing noise in your images so I prefer to render it to rather high SP levels (the Ranch renderfarm is great for that!)

Ben

David Solito wrote:I often render some "problematic/noisy zone" with render region to see what SL is the best.
Then I launch the all render with the good target SL.

when I render interiors I'll render them to SL17-19 ... but if I have a problematic material/object I use region render afterwards to clear that up and paste them in photoshop. so I don't have the higher rendertimes that maybe desired for the whole scene just to clear up that one problematic material

cheers

cheater

zdeno wrote:cheater

I'm still on 1.7.1 and the pc is kinda lame so you have to allow me to cheat

shen.de wrote: I'm still on 1.7.1

I like You already same here.

Does that technique work well shen.de ?

Any tips regarding that "cheat" ?

Here's what I do:
Render also an object ID channel, so you can mask out the exact area in Photoshop that needs higher S.L. Then render a supplemental region render of the problem area to the desired S.L. and put it over the original rendered image using the object ID mask. If you don't use a mask, you'll get a noticeable rectangular visible edge of high to low S.L. where you made your region selection.