[pabl0]

Simple question :

with the new release of Maxwell, we can render only with the Mxw camera (not maya camera, like in the last alpha version),

so how can i switch off the DOF ?




PS : others want to switch on ! --> http://www.maxwellrender.com/forum/viewtopic.php?t=985

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[jep]

BETTY - AWESOME!

BTW, Iker solved the problem by scaling that scene down. Also to get rid of the DOF and keep proper scale, boost your fstop and reduce your shutter speed - there are comparable settings that will give you the exact same exposure with no DOF blurring.

But Betty is right... my scenes are so sharp they'll cut you... hahahaha

[Tyrone Marshall]

An fstop of 16 and higher should push everyting in your image to near sharpness which means not very much if any DOF at all!

[MetinSeven_com]

Hmmm ... I've got a scene with correct dimensions, focusing on an object very nearby (focal depth a little more than 10 cm). Lens: 43.456 mm (human FOV of 45 degrees). I've increased the fStop to 44 and lowered the shutterspeed to 1, but the DOF keeps being very exaggerated. What am I doing wrong? I'm now going to try that cool DOFmaster.com site Betty suggested in a different thread.

By the way, maybe this is a stupid question, but how do you determine the lens focal length with Maxwell?

Cheers,

Metin

[Tyrone Marshall]

I would say your shutter speed is too low.

If you compare this to realworld camera-

that shutter speed is something one might use for very low light situation where you have the camera on a tripod and the time of day is probablly night time.

I would need to see an image and your scene setup to understand it fully.

[MetinSeven_com]

Thanks for your feedback Tyrone. It turned out to be a matter of a wider lens diameter.

About the shutterspeed: I always assume that because a Max scene is perfectly still when not animated the shutterspeed shouldn't affect the sharpness of the image, unlike the real world.

Cheers,

Metin

[Tyrone Marshall]

Thanks for your feedback Tyrone. It turned out to be a matter of a wider lens diameter.

About the shutterspeed: I always assume that because a Max scene is perfectly still when not animated the shutterspeed shouldn't affect the sharpness of the image, unlike the real world.

Cheers,

Metin

Metin, how did you come to the realization that you needed a wider lens diamter? This is very interesting.

[jep]

metin,
a 10CM focus distance is extremely close - you will get major DOF effects from this. you say that your scene dimensions are correct so It sounds like your doing a macro lens (i.e. taking a very close picture of something VERY small.} Major blurring would be expected from this.

[smeggy]

I agree, macro focus settings have minute DoF, a Max (gulp!) camera might help

[MetinSeven_com]

Hey Oscar, did you hear that?! Smeggy said "Max camera"!!

Jep and Smeggy: you're right about the macro scale. I just didn't have any experience with how Maxwell would behave in this area.

Tyrone, it was our Maxwell maestro Tom who enlightened me concerning the wider lens. Now the DOF contrast is just right, at the expense of some perspective depth because of the wider lens.

Cheers,

Metwell

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[MetinSeven_com]

Thanks for the info Betty. By "distortion" do you mean the high contrast between in-focus and out-of-focus? Or do you mean the perspective distortion? First I had a lens width corresponding to the human field of view (45 degrees), but that caused the uhm ... UltraDOF (TM).

Cheers,

Metin

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[MetinSeven_com]

Ok, thanks again! I'll keep your suggestions in mind.

Cheers,

Metin