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CP950 macro flash trick!

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Gene L

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Dec 10, 1999, 3:00:00 AM12/10/99
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Fill flash with a mirror.......

Doug Warner <dwar...@Ggw.total-web.net> wrote in message
news:sXtQOEKynJiqxz...@4ax.com...
>
> First, take a look at this photo:
> http://www.gw.total-web.net/~dwarner/compare.jpg
>
> Two shots combined. Both shot with the CP950's internal flash, no
> other lighting provided other than enough room light to focus with.
>
> The top half was unaided. The bottom one was made with the help of an
> added device that cost me a few cents and about 10 minutes.
>
> Anyone interested? Care to guess?
>
> (Ignore the flaky focus and size difference. The lighting is the
> important detail.)
> To reply, please remove one letter from each side of "@"
>
> CP950 leftside tripod mount idea:
> http://www.gw.total-web.net/~dwarner/photo.htm
>
> Spammers are scammers, avoid them!

Charles Olson

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Dec 10, 1999, 3:00:00 AM12/10/99
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I see a rather small spot of light in each glint on the shiny
resistor in the upper picture, which of course is from the
left-located flash window. In the lower picture, the glints are
smeared to the right, suggesting a diffuser of some kind was
added, perhaps taking the picture through a hole, and maybe
adding a tilted reflecting surface to the right of the lens
behind the diffuser - - perhaps made from a piece of a CDROM
disk.

I bet you have a picture of your arrangement that will amaze us
all!

Chuck

Don Cohen

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Dec 10, 1999, 3:00:00 AM12/10/99
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If you have something useful to share, go ahead; I'm definitely interested.
But I don't have time to play cat and mouse games. No offense intended,
nothing personal, but get on with it...

Don


Doug Warner wrote in message ...

Anthony Maloof

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Dec 11, 1999, 3:00:00 AM12/11/99
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Doug

There is beauty and elegance in this simplicity
Well done

Anthony Maloof

Doug Warner wrote:

> "Charles Olson" <chuck...@worldnet.att.net> wrote:
>
> >I see a rather small spot of light in each glint on the shiny
> >resistor in the upper picture, which of course is from the
> >left-located flash window. In the lower picture, the glints are
> >smeared to the right, suggesting a diffuser of some kind was
> >added, perhaps taking the picture through a hole, and maybe
> >adding a tilted reflecting surface to the right of the lens
> >behind the diffuser - - perhaps made from a piece of a CDROM
> >disk.
>

> Ah, a detective.. or someone who read my previous post on using CD-ROM
> parts :-)
>
> I finally had time to make another one and take a few photos of it:
>
> http://www.gw.total-web.net/~dwarner/ringflash.jpg
>
> This is four 640 x 480's combined into one.
>
> Upper left: Another macro shot with the new pseudo-ringflash..
>
> Upper right: A self portrait in a mirror.
>
> Lower left: The camera side. The flash shines through the rectangular
> cutout on the left. The center hole fits over the lens tube, and the
> hole with the black tape around it guides light to the flash sensor.
> The tube needs to be angled toward the center, or perhaps cone shaped,
> as it tends to overexpose on really close shots. I may try a plastic
> rod light guide next, with a ball melted on the outside end to collect
> more light.
>
> Lower right: The subject side. The center hole is larger here, to
> let the light escape onto the subject. It's held together with
> aluminum duct tape, which is shiny on both sides. The strip of tape
> between layers at the 2:00 position blocks direct light from the
> flash, avoiding a hot spot in that side.
>
> The original version used whole CD's, and a larger hole on the subject
> side. Ideally, the back CD / reflector should have a silvered center
> portion to maximize the light output. The spacing between the two
> layers is about 3/8".
>
> There is plenty of room to play around here, with different shapes
> (does it need to be round?) spacing between layers, and the front hole
> size. I would also look for an easier material to work with, as CD's
> don't cut well. I'm using them because I have hudreds of the things,
> waiting for until I find a local recycler.
>
> Next: A visit to the local Container Store. They have a lot of flat,
> round boxes in metal and plastic. After cutting the holes, I can then
> line the interior with foil..
>
> (Sorry about the bare jpegs, I'm between HTML composers and haven't
> fully learned the new one yet (HotMetal Pro 6)).

the other Jeff

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Dec 12, 1999, 3:00:00 AM12/12/99
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Now I know what to do with my 'coasters' :-)
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