Quasi-Monte Carlo versus Light Cache

[TomA]

Quasi-Monte Carlo versus Light Cache:

 

What's the difference between them and which is preferable for secondary GI bounces in Vray?

[Dave Buchhofer]

both have their plusses. if you're doing much by way of glossy effects than you probably want to look further into light cache.

 

i usually just use qmc when i'm doing quick iterative test renders via dr since dr + light cache forces each machine to render its own light cache seperately, and we have a mixture of quicker/slow-as-hell machines on the farm

 

in terms of light quality, qmc is marginally sharper, and marginally less bright than light cache.

[STRAT]

i prefer QMC as secondaries. but, LC can be pre-cached

[tayrona]

I use QMC in exteriors and LC for interiors. LC is faster but i think is an aproximation of iluminaiton. QMC give you more presition in lighting calculation.