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 Post subject: Fisheye lens
PostPosted: Mon Oct 08, 2007 5:30 pm 

Joined: Sat Mar 05, 2005 1:17 am
Posts: 559
Location: Miami Florida USA
I remember a render done by Maya69 long ago where she shown and fisheye lens to capture an spherical image of the site.
Can someone point in the right direction of how to take a picture of the site to use it un maxwell?
thanks guys.


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 Post subject:
PostPosted: Mon Oct 08, 2007 7:17 pm 
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Joined: Wed Jun 15, 2005 1:53 pm
Posts: 1012
Location: Firenze - Italy
Well, something has to be spherical! (i mean for grabbing almost the whole environment within a single shot or two).
The cheap alternative to the fisheye is to get a mirror ball (still trying to find one since 4 months ago). You can then shoot at it, and maybe you could do it in fork mode, meaning that you could take three different exposures of the same shot. This way you should get something very close to an hemispherical projection of the environment. With a little postwork you can create a full spherical panorama, photoshop it to remove yourself and your camera, and make it hdr.
The cheapest way is to use a tripod to shoot a serie of pics. Then it depends from your needs: you can create a whole strip (panorama) and wrap a cylinder with it, or you can use one dedicated software to create the spherical map from your pics. Under mac i used PTMAC www.kekus.com.
At least these are the options i found for the problem, but i am an autodidact, then for sure there are other more effective solutions!


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 Post subject:
PostPosted: Mon Oct 08, 2007 8:12 pm 
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Joined: Tue Jul 12, 2005 1:52 am
Posts: 399
Location: Torino
This is a cheap hdri tutorial...
http://chshlin.myweb.hinet.net/tutorials/cheap_HDRI/cheap_HDRI(e).htm

using HdrShop ( http://www.hdrshop.com/ ) v.1, free.


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 Post subject:
PostPosted: Wed Oct 10, 2007 7:19 pm 
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Joined: Sat May 14, 2005 11:40 pm
Posts: 2337
Location: Coral Gables
are you talking about making a rendering with a fish eye lense or real pictures for hdri?


I tried the mirrror ball in a maxwell rendering and the noise was insane :? so I gave up.

In real the world, you can hire me ;) I'll make you a hdri of 6000 x 3000 dpi done with pro equipment :D ... no mirror balls :roll: :lol:


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 Post subject:
PostPosted: Wed Oct 10, 2007 7:35 pm 
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Joined: Sat Feb 24, 2007 11:50 pm
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Location: Tulsa, Oklahoma
Leonardo wrote:
In real the world, you can hire me ;) I'll make you a hdri of 6000 x 3000 dpi done with pro equipment :D ... no mirror balls :roll: :lol:


According to your sig line, it may not be a good idea to hire you... :wink:

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 Post subject:
PostPosted: Wed Oct 10, 2007 7:45 pm 
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Joined: Sat May 14, 2005 11:40 pm
Posts: 2337
Location: Coral Gables
Bubbaloo wrote:
Leonardo wrote:
In real the world, you can hire me ;) I'll make you a hdri of 6000 x 3000 dpi done with pro equipment :D ... no mirror balls :roll: :lol:


According to your sig line, it may not be a good idea to hire you... :wink:


:lol: I'm not that bad.... but I had to, people were taking too much advantage of me :lol:


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 Post subject:
PostPosted: Wed Oct 10, 2007 10:26 pm 

Joined: Sat Mar 05, 2005 1:17 am
Posts: 559
Location: Miami Florida USA
Hi Leo what kind of equipment are talking about?


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 Post subject:
PostPosted: Wed Oct 10, 2007 11:07 pm 
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Joined: Sat May 14, 2005 11:40 pm
Posts: 2337
Location: Coral Gables
-D70
-8mm lens (sigma)
- appropiated tripod/head for 360 panos
-Final product HDRI if you want

You can see some low resolution qtvrs here
(as you can see these were not meant for HDRI :lol: )


http://www.tereschubert.com/vr/

leo


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 Post subject:
PostPosted: Wed Oct 10, 2007 11:23 pm 

Joined: Sat Mar 05, 2005 1:17 am
Posts: 559
Location: Miami Florida USA
Do you really did that? nice! how much would it cost to do something like that but for an exterior job.
thanks


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 Post subject:
PostPosted: Wed Oct 10, 2007 11:55 pm 
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Joined: Wed Jan 26, 2005 8:30 pm
Posts: 7382
Location: Uzbjeckiazutjenikitzistan
How many photos do you have to take to cover the whole scene with that 8mm lens?

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 Post subject:
PostPosted: Thu Oct 11, 2007 2:28 pm 
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Joined: Sat May 14, 2005 11:40 pm
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Location: Coral Gables
Mihai wrote:
How many photos do you have to take to cover the whole scene with that 8mm lens?


minimun 3 shots.... it works better with 6 (double) so if someone moves... (with it's very likely in a wedding :lol:) you can photoshop it out!


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 Post subject: Re: Fisheye lens
PostPosted: Sat Jan 15, 2011 12:39 am 

Joined: Wed Nov 24, 2010 12:52 am
Posts: 3
Hi, guys
Can anybody help with creating fisheye effect?


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 Post subject: Re: Fisheye lens
PostPosted: Sat Jan 15, 2011 5:07 pm 

Joined: Wed Nov 24, 2010 12:52 am
Posts: 3
PLEASE!


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 Post subject: Re: Fisheye lens
PostPosted: Sat Jan 15, 2011 6:50 pm 
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Joined: Mon Jul 12, 2010 3:16 pm
Posts: 384
Location: Luxembourg
why not modeling the lens? Then making the render from the camera in front of the lens.
I am sure it could work.

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 Post subject: Re: Fisheye lens
PostPosted: Sat Jan 15, 2011 8:17 pm 
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Joined: Tue Apr 07, 2009 5:28 pm
Posts: 1886
Location: Tampa FL, USA
Short of creating the lens and shooting through that -- the only other way I've found is to lower the focal length really low (5.33 mm for full frame image on 35mm film) on the Maxwell camera to get a wide angle of view (make sure you turn off vignetting in simulens) and then post process in Photoshop using the Distort>Lens Correction filter with remove distortion set to "-50".

It won't be perfect but it will come as close to the genuine article as you are likely to get without suffering through a very long render time due to everything being caustic light(the lens solution).

Image

Best,
Jason.

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Last edited by Half Life on Sat Jan 15, 2011 10:43 pm, edited 2 times in total.

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