IXUS800(SD700) inside the lens images. There is a ND filter! - General Discussion and Assistance - CHDK Forum
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IXUS800(SD700) inside the lens images. There is a ND filter!

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Offline nirschi

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IXUS800(SD700) inside the lens images. There is a ND filter!
« on: 14 / February / 2008, 06:00:03 »
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See for yourself...
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Offline zdravko

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #1 on: 14 / February / 2008, 06:14:36 »
Uh, oh! It hurts!

Man, tell me this lens mechanism is not from your own camera  :)


Anyway, thanks for sharing these pics! So the ND filter is there to compensate for the lack of diaphragm mechanism... interesting...
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Offline kwf

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #2 on: 14 / February / 2008, 06:17:43 »
Very interesting, i thought thats only a feature of the G-series cameras, if the ixus800 has it, maybe A-series cameras have it as well :)
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Offline GrAnd

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #3 on: 14 / February / 2008, 06:48:41 »
Quote from: kwf on 14 / February / 2008, 06:17:43
if the ixus800 has it, maybe A-series cameras have it as well :)
Ixus has it because there is no iris in the camera.
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Offline PhyrePhoX

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #4 on: 14 / February / 2008, 06:58:18 »
how does the ND filter "kick in"? is it done mechanically?
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Offline nirschi

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #5 on: 14 / February / 2008, 07:50:02 »
Quote
Man, tell me this lens mechanism is not from your own camera  :)

Yes it was my own camera! :'( 


No, just kidding. I needed a replacement display and was not willing to pay genuine Canon parts prices.
Found a camera with broken lens but display in good order for half the price at ebay.

Could not resist to disassemble the whole thing. Everything is really tiny, it's just amazing  :D

Quote
how does the ND filter "kick in"? is it done mechanically?

There are two tiny solenoid actuators, similar to the head moving mechanism of hard disks, to move the shutter and the ND filter.


The ND filter is indeed the replacement for a diaphragm mechanism. I believe due to the serious space restrictions.

I discovered 3 cases where the camera kicks the ND filter in:
- In very bright sunlight: gives well saturated blue sky.
- In Fireworks mode: motion blur intended.
- When flash and macro mode simultaniously active: to throttle down further.

Cheers
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Offline nirschi

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #6 on: 14 / February / 2008, 08:38:10 »
A few more images...
« Last Edit: 17 / February / 2008, 01:09:20 by nirschi »
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Offline nirschi

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #7 on: 14 / February / 2008, 08:40:20 »
A few more images...
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Offline mx3

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #8 on: 14 / February / 2008, 10:03:14 »
great pics
i hope Frankenstein will be alive.

can you make more clear ones with chips to read texts on them?
I hope you make photos with higher resolution than these uploaded ones.
I think someone will find these high res pics useful some time latter.

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Offline kwf

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #9 on: 14 / February / 2008, 10:53:54 »
Great! And did you find the broken part of the lens?
Then you oculd try to reassemble the camera  :lol

I would like to see some pics where you can read the chips too :)
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