[Frances]

I agree.

[oscarMaxwell]

Ok, I'll consider it.

[Mihai]

In what situations would this be beneficial though? In the one mentioned above, the solution could be just to disable motion blur. I'm sure Next Limit team will give us an option to turn on/off motionblur.

I can't think of any other situation where this would come in handy, since we can control the brightness (if you don't want dof effect) with the shutterspeed.

[smeggy]

I don't know that we need iso speeds, maybe it would be easier to implement exposure bracketing.

[tom]

of course, traditional equivalents are welcome.... i agree

[pabl0]

wow yes !
really good wish Phalconheart...

[halu]

That would be really great. To implement ISO with compatible grain and color reduction and options VELVEIA, PREVIA, ILFORDPAN etc.

Of course, one of the main benefits with 3D is that you easily can remove
a wall if there is not enough light. But since Maxwell is already dealing with simulation of acctual light-conditions and photo-realsim, I think the Idea is very good. Go for it.

[Mihai]

I am of the same opinion, if you want to emulate a certain films noise response, better to do it in post where you will have complete control and instant feedback....

[jep]

First of all - ISO is in the next release - secondly, I have no desire to sit and dial in reciprocity curves for photoreal grain in post.

in fact - I don't want to do anything but get my hands on the next release!

[Mihai]

How do you know ISO settings is in the next release?

[jep]

well.... was I right? hmmmm?

[Mihai]

Good, have a cookie But what does it mean except to confuse the rendering process? It doesn't seem to give you film like noise or anything like that. Wouldn't it have been easier to just have an option to turn on/off motionblur?

Now there's a new parameter in the game, and I'm not sure it's necessary. For example will faster ISO setting produce more noisy images? If so under what circumstances? Etc etc......

Edit: I thought about it a little more and it seems they added it so you can control the amount of motion blur you want while keeping the same illumination? In that case it makes sense

[jep]

word.

[lluistar]

Bassicaly it should allow you to change the brightness of a scene without changing the DOF and the motion blur.

For a still image ISO should not make much sense, as no matter which shutter speed you are using 1minute or 1/10000 of a second everything will be still, because nothing is moving.

At the momment you have any element in the scene in motion the ISO is absolutelly needed to allow you to control the DOF and the motion blur without having to change the light values of the scene.

[j_man]

lluistar is right, it's not just about motion blur. the film speed is a rating about how sensitive the film is to light. and in the way that f-stop and shutter speed are related, so is the ISO (or ASA) rating of the film. This has been incorporated into DSLR's as well, so the speed is how sensitive the CMOS is to light. The flipside to this control, is make it too sensitive and you will get too much grain and colour abberation.
using the film speed you can use an aperature that will give you desired DOF while still maintaining the lighting conditions. Oh, and to add grain if you want.

J.