Imitation is the greatest form of flattery.  I can only continue to thank
everyone else for their ideas which I keep embellishing.  This one being Dave
Blandston's.
This is the aperture mechanism, best I could mimic, of an old bellows camera.
Only the red ring and parts within are known to be like this shows.   The green
ring behind it is a guess, and not a good one so far because the pivot points
aren't well placed.  However the way in which the pivots slide within the red
ring notches is very close to the real thing.

Bob
--
omniVerse http://users.aol.com/persistenceofv/all.htm

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Attachments:
Download 'Iriss.mpg' (89 KB)

Semi-transparent this time.

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Attachments:
Download 'Irisx.mpg' (52 KB)

That's outstanding, Bob. I would never have been able to figure that out
just by looking at my wife's camera, and I doubt that she would be too happy
if I took it apart. :) I wasn't even close! The x-ray view made it much
clearer. I'll bet the camera/photography crowd would love to see that
animation! (Mrs. Blandston was certainly quite impressed!)

I am humbled by your ability, as well as by many folks around this
newsgroup.

Also, now's my chance to learn to use Chris Colefax's Clock file. I've been
meaning to get around to that, since all his other include files are so
incredible...

Thanks for posting the code. Before I plagiarize it I'm going to give the
animation one more try on my own, after viewing your animations.

Regards,
Dave

"Bob Hughes" <per### [at] aolcom?subject=PoV-News:> wrote in message
news:39738bfa@news.povray.org...
> Imitation is the greatest form of flattery.  I can only continue to thank
> everyone else for their ideas which I keep embellishing.  This one being
Dave
> Blandston's.
> This is the aperture mechanism, best I could mimic, of an old bellows
camera.
> Only the red ring and parts within are known to be like this shows.   The
green
> ring behind it is a guess, and not a good one so far because the pivot
points
> aren't well placed.  However the way in which the pivots slide within the
red
> ring notches is very close to the real thing.
>
> Bob
> --
> omniVerse http://users.aol.com/persistenceofv/all.htm

Post a reply to this message

they are damn good, so good infact I have just emailed them to my dad - a
serious photography fanatic!

Rick

"Bob Hughes" <per### [at] aolcom?subject=PoV-News:> wrote in message
news:39738bfa@news.povray.org...
> Imitation is the greatest form of flattery.  I can only continue to thank
> everyone else for their ideas which I keep embellishing.  This one being
Dave
> Blandston's.
> This is the aperture mechanism, best I could mimic, of an old bellows
camera.
> Only the red ring and parts within are known to be like this shows.   The
green
> ring behind it is a guess, and not a good one so far because the pivot
points
> aren't well placed.  However the way in which the pivots slide within the
red
> ring notches is very close to the real thing.
>
> Bob
> --
> omniVerse http://users.aol.com/persistenceofv/all.htm
>
>
>
>

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what clock file?  i missed something by chris colefax?  is it on his
site?

Dave Blandston wrote:
> 
> That's outstanding, Bob. I would never have been able to figure that out
> just by looking at my wife's camera, and I doubt that she would be too happy
> if I took it apart. :) I wasn't even close! The x-ray view made it much
> clearer. I'll bet the camera/photography crowd would love to see that
> animation! (Mrs. Blandston was certainly quite impressed!)
> 
> I am humbled by your ability, as well as by many folks around this
> newsgroup.
> 
> Also, now's my chance to learn to use Chris Colefax's Clock file. I've been
> meaning to get around to that, since all his other include files are so
> incredible...
> 
> Thanks for posting the code. Before I plagiarize it I'm going to give the
> animation one more try on my own, after viewing your animations.
> 
> Regards,
> Dave
> 
> "Bob Hughes" <per### [at] aolcom?subject=PoV-News:> wrote in message
> news:39738bfa@news.povray.org...
> > Imitation is the greatest form of flattery.  I can only continue to thank
> > everyone else for their ideas which I keep embellishing.  This one being
> Dave
> > Blandston's.
> > This is the aperture mechanism, best I could mimic, of an old bellows
> camera.
> > Only the red ring and parts within are known to be like this shows.   The
> green
> > ring behind it is a guess, and not a good one so far because the pivot
> points
> > aren't well placed.  However the way in which the pivots slide within the
> red
> > ring notches is very close to the real thing.
> >
> > Bob
> > --
> > omniVerse http://users.aol.com/persistenceofv/all.htm

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ryan constantine wrote:
> 
> what clock file?  i missed something by chris colefax?  is it on his
> site?

It is called clockmod.inc. You can find an excellent tutorial on its
use at Steve Stricklands web page -

http://www.puzzlecraft.com/cm/ClockMod.html

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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"Dave Blandston" <gra### [at] earthlinknet> wrote in message
news:3973dd66$1@news.povray.org...
| That's outstanding, Bob. I would never have been able to figure that out
| just by looking at my wife's camera, and I doubt that she would be too happy
| if I took it apart.

No, not a good idea to disassemble someone else's things.  Unless you're a
professional and a
stranger  :-)
The overlapping plates (still don't know a name for them) was fairly obvious but I had
to take
the lens ring off to actually know how they were moved in the front.  If I were
compelled enough
I might take the whole thing apart to see the back but I'm pretty sure of the anchored
ends
because I already got the correct movement like it is.  Just need to reposition some
some to get
a better pivot point on the back.

| Also, now's my chance to learn to use Chris Colefax's Clock file. I've been
| meaning to get around to that

It's a great thing to simply put in a clock type and go.  You've been missing out.  I
only used
it for this to open and close the iris for loopability.  Wasn't needed.
Good luck on yours, and glad you liked mine.

Bob

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"Rick [Kitty5]" <ric### [at] kitty5com> wrote in message news:39741ad6@news.povray.org...
| they are damn good, so good infact I have just emailed them to my dad - a
| serious photography fanatic!

I'll take that as a compliment, certainly so.  Hope he doesn't email me a small book
of things
wrong with it.

Bob

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In the first non-transparent animation, the movement seemed strange to
me ... but now, that's clear !
nice animation, really !

Denis.


Bob Hughes wrote:
> 
> Semi-transparent this time.
> 
>                 Name: Irisx.mpg
>    Irisx.mpg    Type: MPEG Video (video/mpeg)
>             Encoding: x-uuencode

Post a reply to this message

"Denis Corbin" <cor### [at] wanadoofr> wrote in message
news:39743B15.C2412DB0@wanadoo.fr...
| In the first non-transparent animation, the movement seemed strange to
| me ... but now, that's clear !
| nice animation, really !

Thanks, good to hear that.  Still looks strange to me.

Bob

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Bob Hughes wrote:

> The overlapping plates (still don't know a name for them)

Vanes.

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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pretty darn cool.  too bad people that make tutorials don't make zip
files of them so we can download and view them off line.  for this
reason i usually prefer the single loooooong page tutorials.  oh well,
CHeggers can't be Boosers.

Ken wrote:
> 
> ryan constantine wrote:
> >
> > what clock file?  i missed something by chris colefax?  is it on his
> > site?
> 
> It is called clockmod.inc. You can find an excellent tutorial on its
> use at Steve Stricklands web page -
> 
> http://www.puzzlecraft.com/cm/ClockMod.html
> 
> --
> Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

Post a reply to this message

"Ken" <tyl### [at] pacbellnet> wrote in message news:39747258.85951368@pacbell.net...
|
| > The overlapping plates (still don't know a name for them)
|
| Vanes.

Okay, I'll accept that  :-)
Not that I didn't believe you but I had to go looking again myself and the only thing
I saw with
that terms used was some odd engineering web pages about a "fusion" device of some
sort.
http://aries.ucsd.edu/PUBLIC/ARIES-RS/ENG-BOOK/diaphragm.html  is the schematic of the
not quite
similar vanes used in a diaphragm not used in cameras obviously.

Bob

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This is a more realistic version of the aperture iris diaphragm, with some
unreality added: a light ball flies through it.  Still a tiny animation
(resolution and file size both).

Bob

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Attachments:
Download 'Irisl.mpg' (39 KB)

[This followup was posted to povray.binaries.animations and a copy was 
sent to the cited author.]

In article <39779341@news.povray.org>, 
per### [at] aolcom?subject=PoV-News says...
> This is a more realistic version of the aperture iris diaphragm, with some
> unreality added: a light ball flies through it.  Still a tiny animation
> (resolution and file size both).
> 
> Bob
This is wonderful and instructive: you are fast in making such small 
gems! 
----------------
Regards,  Sander

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| This is wonderful and instructive: you are fast in making such small gems!

Hey, thanks.  As you probably know it's the render times which slow most
people up, including me.
I had this latest one done the next day after the others, I hesitated to
upload yet another.  Just tweaked a little more on the CSG positions,
texture change, addition of a media sphere.  Nothing to it.  The real trick
is what to do with it now  :-)
Maybe Micha Riser is still scavenging the p.t.s-f. group for inclusions to
the POV-Ray Object Collection.

Bob

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"Bob Hughes" <per### [at] aolcom?subject=PoV-News:> wrote in message
news:3978b1ce@news.povray.org...
> I hesitated to upload yet another.

Not me - I have no shame. This one uses shark fin-shaped blades. It's not as
sophisticated as Bob's, and it doesn't look quite as smooth, but at least I
got the infernal thing to work! (Rsibbald was right, although the best pivot
point seems to be a little further to the right...)

This has been improved since the animation render, but not much - just a
little better 3D effect.

Dave

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Attachments:
Download 'UFO.mpg' (107 KB)

Neat-o.  Should have posted it out by itself starting a new thread.  That
mid-ring's stillness is extremely noticeable with the inner and outer parts
moving like that.  I like the mirrored interior contrasting with the worn
exterior, just a bit empty as it is now though.

Bob

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"Bob Hughes" <per### [at] aolcom?subject=PoV-News:> wrote in message
news:397a8223@news.povray.org...
> Neat-o.  Should have posted it out by itself starting a new thread.

Thanks! New version's a-renderin' as we speak - new features include an
eerie green glow (dim on the outside, bright inside), and a gold undulator
inside.

-Dave

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"Dave Blandston" wrote:
> This one uses shark fin-shaped blades. It's not as sophisticated
> as Bob's, and it doesn't look quite as smooth, but at least I
> got the infernal thing to work!

Cool!

One thing I noted though; the texture of the iris does not follow the
movements of the iris. You need to texture each individual part, and place
the texture statement before the transformations. I think it could benefit
from that. Look forward to see next version!

Greetings,

Rune
--
Updated July 23: http://rsj.mobilixnet.dk
3D images, include files, stereograms, tutorials,
The POV Desktop Theme, The POV-Ray Logo Contest,
music, 350+ raytracing jokes, and much more!

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"Rune" <run### [at] inamecom> wrote in message
news:397b4242@news.povray.org...
> Cool!
Thanks!

> One thing I noted though; the texture of the iris does not follow the
> movements of the iris.
I noticed the texture problem too, but not until the render was half done,
but it's corrected now.

>Look forward to see next version!
I just noticed the IRTC animation topic (I don't usually pay much attention
to it since I'm an amateur), but I can't pass this one up!

-Dave

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