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dkalna
 Post subject: problem with focus
PostPosted: Wed Dec 21, 2011 2:59 pm 
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Joined: Fri Jul 22, 2011 9:53 am
Posts: 17
Location: Bern, Switzerland
hi there,

every time I get part of my render very blurred (out of focus). what am I doing wrong?
how can I set up my camera so that the whole scene is in focus? thanks a lot.

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Half Life
 Post subject: Re: problem with focus
PostPosted: Wed Dec 21, 2011 3:14 pm 
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Joined: Tue Apr 07, 2009 5:28 pm
Posts: 1889
Location: Tampa FL, USA
Use a larger F-stop.

http://en.wikipedia.org/wiki/Depth_of_field

http://en.wikipedia.org/wiki/F-number

Best,
Jason.

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RobMitchell
 Post subject: Re: problem with focus
PostPosted: Wed Dec 21, 2011 3:42 pm 
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Joined: Mon Aug 20, 2007 2:49 pm
Posts: 515
Location: Warwickshire, UK
As a quick tip, an F-stop setting of 32 will generally put everything in the camera shot in focus.

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dkalna
 Post subject: Re: problem with focus
PostPosted: Wed Dec 21, 2011 4:06 pm 
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Joined: Fri Jul 22, 2011 9:53 am
Posts: 17
Location: Bern, Switzerland
thank you guys, it seems like higher value for f-stop darkened the whole scene. is it ok to correct this with higher ISO?

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Dalibor
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Half Life
 Post subject: Re: problem with focus
PostPosted: Wed Dec 21, 2011 4:08 pm 
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Joined: Tue Apr 07, 2009 5:28 pm
Posts: 1889
Location: Tampa FL, USA
Rather than play with those numbers it probably easier to just lock the exposure and use the EV setting to control your exposure -- this way you can adjust the F-stop to your hearts content without messing up your exposure.

http://en.wikipedia.org/wiki/Exposure_value

Best,
Jason.

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dkalna
 Post subject: Re: problem with focus
PostPosted: Wed Dec 21, 2011 4:13 pm 
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Joined: Fri Jul 22, 2011 9:53 am
Posts: 17
Location: Bern, Switzerland
Hi Jason,

thank you but how exactly shall I do that with "lock exposure"?
And what is EV and where do I find it? Are those all settings an camera attributes?

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Dalibor
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Half Life
 Post subject: Re: problem with focus
PostPosted: Wed Dec 21, 2011 4:27 pm 
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Joined: Tue Apr 07, 2009 5:28 pm
Posts: 1889
Location: Tampa FL, USA
EV is short for Exposure value -- the link explain it and gives a table of common values.

Here's a link to more info for your plugin:

http://support.nextlimit.com/display/maxwelldocs/Maya+-+Cameras

Best,
Jason.

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Bubbaloo
 Post subject: Re: problem with focus
PostPosted: Wed Dec 21, 2011 5:22 pm 
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Joined: Sat Feb 24, 2007 11:50 pm
Posts: 7346
Location: Tulsa, Oklahoma
Don't forget about scene scale. It plays a big role in lighting, DOF, etc... First thing to do is make sure your scene is at the correct scale.

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Mihai
 Post subject: Re: problem with focus
PostPosted: Wed Dec 21, 2011 11:58 pm 
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Joined: Wed Jan 26, 2005 8:30 pm
Posts: 7406
Location: Uzbjeckiazutjenikitzistan
This will help too:

http://support.nextlimit.com/display/maxwelldocs/Camera

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dkalna
 Post subject: Re: problem with focus
PostPosted: Thu Dec 22, 2011 7:58 am 
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Joined: Fri Jul 22, 2011 9:53 am
Posts: 17
Location: Bern, Switzerland
thank you guys, I appreciate your help.

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Dalibor
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jfrancis
 Post subject: Re: problem with focus
PostPosted: Fri Dec 23, 2011 9:22 pm 

Joined: Tue Aug 30, 2005 3:19 am
Posts: 840
I usually also use manual focus distance and set the distance
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dkalna
 Post subject: Re: problem with focus
PostPosted: Thu Dec 29, 2011 10:54 am 
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Joined: Fri Jul 22, 2011 9:53 am
Posts: 17
Location: Bern, Switzerland
Well, I have found out that using 2 or 3 node camera simplyfies things a lot.

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