Ixus 850IS/SD800 Aperture control - AllBest's Builds - CHDK Forum supplierdeeply
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Ixus 850IS/SD800 Aperture control

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Offline thundgra

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Ixus 850IS/SD800 Aperture control
« on: 07 / May / 2008, 09:52:39 »
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Hi there all,

This is my first post and therefore apologies if I have put it in the wrong place.

I have just installed CHDK version: allbest, #51-390 on my ixus 850IS. All is working fine except I dont seem to be able to change the aperture value. Is there another build that can do this or can it just not be done on this camera??

Cheers
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Offline plto

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Re: Ixus 850IS/SD800 Aperture control
« Reply #1 on: 07 / May / 2008, 11:29:19 »
The Ixus line doesn't have an aperture. They use a ND filter. I don't know how it works exactly but that's why there is no aperture setting in the menu's.
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Offline PhyrePhoX

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Re: Ixus 850IS/SD800 Aperture control
« Reply #2 on: 07 / May / 2008, 14:01:42 »
pito is right, the small cameras dont have a real aperture, it's fake, by using an nd filter to simulate a stop of light.
i'm wondering if this fact isnt stated in the manual, i mean, do they have Custom or manual modes on the ixuses? do they offer you to change aperture there? but only two settings, right?
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Offline Stokestack

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Re: Ixus 850IS/SD800 Aperture control
« Reply #3 on: 08 / May / 2008, 22:11:16 »
No real aperture?  That's interesting and valuable info.  And disappointing.

Is it only the Ixus line that lacks an iris?

The only way to do good time-lapse is to lock your focus, aperture, and shutter speed.  It looks as though these wouldn't be possible on an Ixus then, right?
« Last Edit: 08 / May / 2008, 22:12:51 by Stokestack »
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