On 30-9-2018 14:56, Jim Holsenback wrote:
> On 9/30/18 7:06 AM, Thomas de Groot wrote:
>> On 30-9-2018 11:18, Jim Holsenback wrote:
>>> On 9/27/18 7:39 PM, Alain wrote:
>>>> It's possible that you may be able to use adaptive 0 for those. If 
>>>> it's not good, try adaptive 1.
>>>> With adaptive 0, you can use some insane values for your area_light, 
>>>> like :
>>>> area_light x y  1025 1025 circular orient adaptive 0
>>>>
>>>> and still get good performances.
>>>> Using adaptive 0 don't turn the feature off, neither will using 
>>>> adaptive off.
>>>> The only way to turn adaptive off is to remove adaptive from the 
>>>> definition.
>>>
>>> i removed jitter and used adaptive 0 (with /no/ other area light 
>>> changes) and cut 20 hours off the render time...3 cheers for 
>>> +am3...i'm a fan!
>>
>> Out of curiosity, what were your values for +a, +ac, and +r, using +am3?
>>
> +am3 +a0.015 +ac0.995 +r3

OK, thanks. Confirms what I am using in general; been using +r4 for 
serious cases. With hindsight, I see that in my Paris scene I used 
adaptive 1 and jitter on for the street lights. I should turn them off 
to gain much needed render time.

-- 
Thomas

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