ixus870_sd880 port started - page 22 - DryOS Development - CHDK Forum
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ixus870_sd880 port started

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Offline Microfunguy

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Re: ixus870_sd880 port started
« Reply #210 on: 23 / July / 2009, 08:26:35 »
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Quote from: Gruga on 21 / July / 2009, 02:10:45
when one is inverted as in taking stereoscopic pictures, there is a discrepancy in the vertical field.
The lens may be 'drooping' a little.
Remember, these sensors are so small that the tiniest change in lens position will alter the exact field-of-view captured.
If with both cameras the normal way up, if you zoom the vertical alignment can change.

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Have to tilt the camera to make correction.

I think having one camera adjustable for tilt is the best solution.
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Is there any setting that can fix it?

In SDM sister programme 'StereoPhoto Maker' (SPM) press ALT + A , any misalignments will automatically be corrected.

Using Multiconversion, you can batch-correct hundreds of images.

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The preliminary diagnosis is problem with batteries of the new remote.

That seems the most likely reason.


David
« Last Edit: 23 / July / 2009, 08:28:13 by Microfunguy »
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Offline Gruga

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Re: ixus870_sd880 port started
« Reply #211 on: 23 / July / 2009, 10:50:01 »
Thanks Microfunguy for the advice.
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Offline Microfunguy

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Re: ixus870_sd880 port started
« Reply #212 on: 25 / July / 2009, 16:21:45 »
mweerden:

For firmware version 101a, you should make the following change :-

NHSTUB(GetZoomLensCurrentPoint, 0xFF92B9CC)

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Offline Microfunguy

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Re: ixus870_sd880 port started
« Reply #213 on: 25 / July / 2009, 17:18:22 »
Quote from: Microfunguy on 25 / July / 2009, 16:21:45
mweerden:

For firmware version 101a, you should make the following change :-

NHSTUB(GetZoomLensCurrentPoint, 0xFF92B9CC)



EDIT:

Looks like it has already been done.
I must be using old files.
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Offline Gruga

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Re: ixus870_sd880 port started
« Reply #214 on: 27 / July / 2009, 10:03:30 »
I seem to have difficulty getting synchronization of the flash using the 10 sec self-timer function (I won't expect that it works with the face self-timer). Left camera always captures a darker picture.
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Offline Microfunguy

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Re: ixus870_sd880 port started
« Reply #215 on: 27 / July / 2009, 10:40:36 »
Quote from: Gruga on 27 / July / 2009, 10:03:30
I seem to have difficulty getting synchronization of the flash using the 10 sec self-timer function

Well, I have not thought about it but synchronised shooting is not intended to work in that way.

If you want a user delay, in Stereo\Synch menu enable 'synch delay' and set 'coarse delay' value to seconds x 10 on both cameras.

(Use zoom lever to set increment change to 10)

Ten seconds may be very near the time-out anyway, maybe set eight seconds.

I have never tested dual-camera flash-synch with user delay, it will be interesting to see how you get on.
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Offline Gruga

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Re: ixus870_sd880 port started
« Reply #216 on: 27 / July / 2009, 11:09:27 »
Quote from: Microfunguy on 27 / July / 2009, 10:40:36
If you want a user delay, in Stereo\Synch menu enable 'synch delay' and set 'coarse delay' value to seconds x 10 on both cameras.

Thanks for the instruction. I will try that.

What is the effect of changing the CAMERA DISTANCE setting in the STEREO menu? The actual physical distance of course counts, but just the setting in the menu...?
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Offline Microfunguy

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Re: ixus870_sd880 port started
« Reply #217 on: 27 / July / 2009, 11:18:26 »
Quote from: Gruga on 27 / July / 2009, 11:09:27
What is the effect of changing the CAMERA DISTANCE setting in the STEREO menu?

It affects the calculation of stereo deviation and also the optional deviation guideline that can be shown on the right camera.

Camera separation, lens focal-length and subject distance all determine how weak or strong the stereo effect is.

Unfortunately, measurement of subject distance is difficult to do automatically.

Small-sensor cameras have great depth-of-field and measuring distance by changing focus until image-contrast is maximum in not very precise.

There is a rangefinder option to measure distance using the telephoto zoom setting, but most people just want to press the button and hope for the best.
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Offline Gruga

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Re: ixus870_sd880 port started
« Reply #218 on: 27 / July / 2009, 14:19:20 »
Quote from: Microfunguy on 27 / July / 2009, 11:18:26
but most people just want to press the button and hope for the best.

There are a lot to try out for the optimal effect. :)
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Offline Microfunguy

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Re: ixus870_sd880 port started
« Reply #219 on: 27 / July / 2009, 14:43:58 »
Quote from: Gruga on 27 / July / 2009, 14:19:20
There are a lot to try out for the optimal effect. :)

That is the beauty of digital cameras.

Take many photos in many different situations and let 'StereoPhoto Maker'  Multiconversion feature do the hard work of correcting them !
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