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 Post subject: Basic experiment in lens distortion on Vader's face.
PostPosted: Wed Mar 07, 2007 4:22 am 
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Joined: Wed Sep 06, 2006 8:18 am
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Location: Herald, CA. US
These pictures of my raw SPFX were taken with a Canon Rebel. A fun thing to do is save these and put them in a folder by themselves and keep clicking forward while looking at them with Windows Picture and Fax Viewer. The difference is substantial.

First is the picture with a focal length of 31mm (standing close, zoomed out).
Image

Next is the picture at a focal length of 149mm (zoomed in).
Image

The angles aren't exact, but pretty close.


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 Post subject:
PostPosted: Wed Mar 07, 2007 4:58 am 
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Joined: Thu Dec 21, 2006 10:46 pm
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Location: San Jose, CA
Yes. The actual photographic term for that is perspective distortion.

I would recommend that anyone taking photos of their helmets to try to standardize on standing 5-8 feet away from the helmet, then zooming in. This will greatly reduce perspective distortion.


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 Post subject:
PostPosted: Wed Mar 07, 2007 10:23 am 
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Joined: Mon Oct 09, 2006 12:12 pm
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Location: Melbourne
Wow the face looks shrunken? Is that really how small the face is?


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 Post subject:
PostPosted: Wed Mar 07, 2007 10:39 am 
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Technically, neither is really an accurate representation. Same mask, different focal lengths.


Last edited by Pantheragem on Wed Mar 07, 2007 8:34 pm, edited 1 time in total.

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 Post subject:
PostPosted: Wed Mar 07, 2007 11:49 am 
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Location: Melbourne
Whoa!!!


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 Post subject:
PostPosted: Wed Mar 07, 2007 12:32 pm 
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Fatherless One wrote:
Whoa!!!


Yeah, gives you an idea of how much stock to put in pictures.


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 Post subject:
PostPosted: Wed Mar 07, 2007 11:16 pm 
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Fatherless One wrote:
Wow the face looks shrunken? Is that really how small the face is?


Different setting, different angle, obviously. This is actually the SPFX I have as finished by Phil, but the cast is exactly the same as the other.

There is still plenty of distortion here, but it gives a somewhat better representation of the proportions. Still, it is a far, far from perfect photo. (Yes, I am replacing that oversized armour soon.)

Image

Apologies if these pics are super massive, I'm on a pretty good sized lcd now. I've kind of lost perspective.


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 Post subject:
PostPosted: Thu Mar 08, 2007 1:38 am 
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Joined: Thu Dec 21, 2006 10:46 pm
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Location: San Jose, CA
Additional proof of Perspective Distortion

Rubie's facemask, slightly modified, photographed 2 feet away:

Image

Same, four feet away

Image

Same, eight feet away

Image


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 Post subject:
PostPosted: Thu Mar 08, 2007 1:38 am 
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Location: San Jose, CA
Would you believe these are actually the SAME helmet?

Image

Again, these are photographed at two different distances.


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 Post subject:
PostPosted: Thu Mar 08, 2007 4:41 pm 
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Joined: Thu Aug 31, 2006 4:41 pm
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Location: The Netherlands
Yeah, cameras do lie!


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 Post subject:
PostPosted: Thu Mar 08, 2007 8:16 pm 
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Joined: Mon Oct 09, 2006 12:12 pm
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Location: Melbourne
Great demonstration photo's.


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 Post subject:
PostPosted: Fri Mar 09, 2007 1:20 pm 
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Joined: Fri Jan 12, 2007 7:37 pm
Posts: 165
Location: Orlando, FL
Here are my demo photos with my new rubies supreme:

8 ft:
Image
Image

4 ft:
Image
Image

2 ft:
Image
Image

It is amazing how different distance can make the same helmet photograph look completely changed. This was a pretty cool little experiment.


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 Post subject:
PostPosted: Fri Mar 09, 2007 4:02 pm 
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Joined: Sat Jan 20, 2007 3:03 pm
Posts: 657
Location: UK
Excellent illustration of the issue. Looking at the movie we have no idea what kind of distance/apature/focal length they used for each scene. Add to that a 35mm-70mm anamorphic lens - which is probably doing a whole lot of other things too.

It just goes to show that theres a very good reason why people cant make their helmet look like that famous close up of Vaders face on the Tantive IV!

Cheers

Jez


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 Post subject:
PostPosted: Fri Mar 09, 2007 7:16 pm 
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Joined: Thu Dec 21, 2006 10:46 pm
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Bingo,

In movies, they typically stay a certain distance away. If they have to, they zoom in tight.

Let me ping one of my roommates, who is a pro photographer and who has worked on various Hollywood sets.


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 Post subject:
PostPosted: Fri Mar 09, 2007 11:19 pm 
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Joined: Wed Sep 06, 2006 8:18 am
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Location: Herald, CA. US
BingoBongo275 wrote:
Excellent illustration of the issue. Looking at the movie we have no idea what kind of distance/apature/focal length they used for each scene. Add to that a 35mm-70mm anamorphic lens - which is probably doing a whole lot of other things too.

It just goes to show that theres a very good reason why people cant make their helmet look like that famous close up of Vaders face on the Tantive IV!

Cheers

Jez


A while ago, I took a kinda crappy pic I had (hard to believe all these pics are the same helmet) and used my NON-EXISTANT Photoshop skills to warp the hell out of it. I also badly added shadows over the eyebrows. It's all stretched and squished, yet looks a little like the Tantive IV close-up. To me anyway.

Image
Image

Another thing this helps me understand is why the VM1 is such a hard helmet to take pics of. One of my favorite helmets, and of all the pics I've seen there's only a few that give a good representation of how it actually looks. One of them is the VM1 with the armor on your site Jez, the other is a pic my gf took while I was wearing mine.


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