IXUS800(SD700) inside the lens images. There is a ND filter!

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #20 on: 15 / February / 2008, 00:12:19 »
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« Last Edit: 22 / April / 2008, 12:03:52 by Barney Fife »
[acseven/admin commented out: please refrain from more direct offensive language to any user. FW complaints to me] I felt it imperative to withdraw my TOTAL participation. Nobody has my permission, nor the right, to reinstate MY posts. Make-do with my quoted text in others' replies only. Bye

Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #21 on: 15 / February / 2008, 00:29:03 »
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I bet all that needs to confirm it is listening for that "clunk" when switching to/from Fireworks mode.

Indeed, Barney. It was that "clunk" that made me extremely curious!

Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #22 on: 15 / February / 2008, 02:41:42 »
Just my two cents, I have a G9, and when I look at the aperture through the lens, I see the following: when I engage the ND filter, there is something that covers the aperture, in such a way that I cannot see it close and open when I take pictures. There is none of that in fireworks mode, just a regular 2 second F8 shot, where I can see the aperture open and close.

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Offline GrAnd

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #23 on: 15 / February / 2008, 02:44:20 »
Hm... I do not hear anything when switching to/from Firewoks mode. Neither on A610 not on S3.
If I point the camera to a light source, there is a "cluck", but it's definitely the diaphragm (I clearly can see its movements through the optics).
CHDK Developer.


Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #24 on: 15 / February / 2008, 03:10:56 »
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« Last Edit: 22 / April / 2008, 12:04:14 by Barney Fife »
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Offline kwf

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #25 on: 15 / February / 2008, 03:32:38 »
two more images...

I suspect the two perpendicular silvery parts are the gyroscopes, probably piezo based. Then the chip in the center is probably the IS controller.

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Offline GrAnd

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #26 on: 15 / February / 2008, 05:15:53 »
Here's another thing that I don't understand, and leads me to believe it's in there behind the lens and aperture mechanism. When I enter Fireworks mode, the aperture does not change, but the image in the EVF becomes much darker.
It can be just a result of shorter exposure time (higher refresh rate) for preview. And as fireworks a quite bright as such, a camera can reduce the the brightness of a picture (again, for increasing the refresh rate).

When I turn off AF Mode from "Continuous" to "Single", then I can't get it to create that sound.
I do not use continuous AF. And A610 does not have such mode at all. That why I did hear nothing.
CHDK Developer.

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Offline Kalli

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #27 on: 15 / February / 2008, 07:25:19 »
That "clunk" has me curious.

On A620 I can hear a "clunk" when I'm in SCN-mode and switch to/from "kids"...


Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #28 on: 15 / February / 2008, 10:48:27 »
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On A620 I can hear a "clunk" when I'm in SCN-mode and switch to/from "kids"...

On the IXUS800 this sounds completely different than fireworks mode, more like "wrrrriz" when pressing half-shutter
and "cling" on release. Seems that the auto-focus scan range gets limited mechanically in the lens!

Fireworks mode has a well-nourished "clunk" when pressing and release half-shutter, no "wrrrriz". Focus is fixed to infinity
and aperture value doubles from 2.8 to 5.6 (5.5 to 11.0 with telephoto) as long as half-shutter is pressed: the ND filter is in.

I think these two cases are not related in any way.




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Offline kwf

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Re: IXUS800(SD700) inside the lens images. There is a ND filter!
« Reply #29 on: 15 / February / 2008, 11:06:22 »
dont they all have gyros, because of orientation?

no. orientationsensor != gyro. Gyro sensors measure the angular velocity.

I think orientation sensor used in cameras is just a switch, kind of mercury switch (nowadays  without mercury).

 

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