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#30 From: "velarpinch" <velarpinch@...>
Date: Tue Feb 19, 2008 5:41 pm
Subject: Re: A570 synch
velarpinch
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--- In StereoDataMaker@yahoogroups.com, "David Sykes"
<killspammers2@...> wrote:

> Are you in 'sync' mode ?
Yes.

> The word 'Synch' should be displayed at the top of the screen.
Confirmed.

> Are you using the simple remote script or Synch.bas ?
Used synch.bas.

> You should be using synch.bas.
Patting self on back.

-Joel

#29 From: "rexlion22" <3Dslides@...>
Date: Tue Feb 19, 2008 5:35 pm
Subject: what would happen
rexlion22
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I'm curious... if the voltage is applied across the two USB ports with
the switch, but without SDM installed, does anything happen?

Mike Galazin

#28 From: "Rick Schneider" <rschneider@...>
Date: Tue Feb 19, 2008 5:06 pm
Subject: RE: Synch tests on new cameras
rick38odu
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David,

 

Assuming the synch tests for ixus55/SD450 and ixus70/SD1000 look acceptable, will the download files for these models be made available on the StereoData Maker web site?

 

Rick

 

From: StereoDataMaker@yahoogroups.com [mailto:StereoDataMaker@yahoogroups.com] On Behalf Of David Sykes
Sent: Sunday, February 17, 2008 4:27 AM
To: StereoDataMaker@yahoogroups.com
Subject: [StereoDataMaker] Synch tests on new cameras

 

In about a weeks time, we should have the results of synchronisation
tests on the ixus55/SD450 and ixus70/SD1000.

The person who ported the basic CHDK to the the ixus55 learned a lot
from the Ukrainian hackers.

The good news is .. he is a stereo photographer.

The even better news is .. he is a (quiet) member of Photo3D !

That experience will be invaluable when porting other cameras.

David


#27 From: "David Sykes" <killspammers2@...>
Date: Tue Feb 19, 2008 9:26 am
Subject: Re: A570 synch
microfunguy
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Joel wrote:

> the shutters are only triggered on button-press, not button-release.

Are you in 'sync' mode ?

The word 'Synch' should be displayed at the top of the screen.

Are you using the simple remote script or Synch.bas ?

You should be using synch.bas.


David

#26 From: "weirdscience2004" <stereophoto@...>
Date: Tue Feb 19, 2008 4:43 am
Subject: Re: A570 synch
weirdscience...
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6.8 volts may be too high and could damage the cameras USB ports a
simple way to bring the voltage down is to connect a diode in line each
one will drop about .5 volts.
Craig


--- In StereoDataMaker@yahoogroups.com, "velarpinch" <velarpinch@...>
wrote:
>
> I have 6.8v going into each of two A570's, but the shutters are only
> triggered on button-press, not button-release. I imagine my synch
> would be much better if I could remedy this -- any suggestions?
>
> Joel
>

#25 From: "velarpinch" <velarpinch@...>
Date: Tue Feb 19, 2008 4:31 am
Subject: A570 synch
velarpinch
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I have 6.8v going into each of two A570's, but the shutters are only
triggered on button-press, not button-release. I imagine my synch
would be much better if I could remedy this -- any suggestions?

Joel

#24 From: "wbloos@..." <wbloos@...>
Date: Mon Feb 18, 2008 6:30 pm
Subject: Re: A570 or A720
wbloos
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Hello duke,

  > I see the 710 but not the 720 listed.

the 720 is not listed yet, since there are some minor changes to be done
to some scripts - please wait till this will be published.

greetings
Werner


The Duke schrieb:
> I'm currently sitting on the fence (having a difficult time making a
> decision) whether to buy two A570 or two A720 cameras.
>
> As I recall, the A720 had slightly better sync than the A570.  Also, I
> was wondering about the script download on the SDM website.  I see the
> 710 but not the 720 listed.
>
> Reviews say that image quality (especially corner sharpness) is
> slightly better on the A720, but I'm wondering if this will make any
> practical difference.  Most of my 3D shots will be viewed on computer,
> I usually make 4X6" pairs in Stereo Photo Maker, and an occasional 2D
> enlargement up to 8X10.  The longer zoom range on the A720 is the only
> practical advantage that I can see.
>
> Any comments are welcome.  :-)
>
> Duke
>
> */David Sykes <killspammers2@...>/* wrote:
>
>     A new folder has been added to scripts for the A570 and A720 cameras.
>     In future, it may apply to other cameras.
>
>     The Canon software will get or set various camera properties if you
>     provide it with the appropriate 'magic number'.
>
>     The 'magic number' is technically referred to as a 'property-case'.
>
>     If you know the numbers, you can get the value of a property (such as
>     white-balance) using your own script.
>
>     In script 'Synch_L.bas', we have :-
>
>     rem get current flash status
>     get_prop 16 f
>
>     For many cameras, property-case '16' retrieves the flash-status and
>     puts the value in user-variable 'f' :-
>
>     0 = AUTO
>     1 = ON
>     2 = OFF
>
>     On the A570/A720 we use :-
>     get_prop 143 f
>
>     Before we dim the left camera flash, we want to save its current
>     override setting :-
>
>     rem get current flash override value
>     get_prop 28 f
>
>     On the A570/A720 we use :-
>     get_prop 127 f
>
>     Simply use the scripts provided.
>
>     David
>
>
>



___________________________________________________________
Der frühe Vogel fängt den Wurm. Hier gelangen Sie zum neuen Yahoo! Mail:
http://mail.yahoo.de

#23 From: "David Sykes" <killspammers2@...>
Date: Mon Feb 18, 2008 11:51 pm
Subject: Re: How is sync achieved?
microfunguy
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Ged Burnell wrote:

> I'm a 'LANC and Sony V1' man at the moment and they acheive good sync
> by the LANC controller switching the clocks on at the same time.

but the synch then drifts and may not be good the instant unscripted
action occurs.

>how the two cameras are synchronised with such precision by using SDM.

Shooting an image on detection of button-push provides poor
synchronisation so we let the cameras complete other tasks (such as
preflash) and then divert the Canon shooting task to our code that
continuously monitors the USB connector at VERY high speed.

Hence, detection of button-release is very fast and any difference
between the two cameras detecting it is very small.

The shooting-sequence then continues and if all the settings on both
cameras are the same, we expect the remaining tasks (before taking the
photo) take the same amount of time.

On most cameras tested so far, that is the case.

People are regularly using flash at 1/250 and 1/500 sec shutter-speed.



David

#22 From: "gedburnell" <gedburnell@...>
Date: Mon Feb 18, 2008 11:27 pm
Subject: How is sync achieved?
gedburnell
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Please excuse if this has been answered before, but I've not found any
explanation on how the two cameras are synchronised with such precision
by using SDM.

I'm a 'LANC and Sony V1' man at the moment and they acheive good sync
by the LANC controller switching the clocks on at the same time.  It
works most of the time, but how does SDM work?  Do the two
cameras 'talk' to each other and adjust their clocks to suit?

Ged

#21 From: "rexlion22" <3Dslides@...>
Date: Mon Feb 18, 2008 11:22 pm
Subject: Re: A570 or A720
rexlion22
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Yes, one test with one pair of cameras.  Not a statistical sampling
by any means.  Will a different pair yield the same sync speeds?
Time will tell.

But I wouldn't sweat over 1/2000 versus 1/40,000 sync results.  I can
be happy with 1/1000, that's plenty for me.  :)

Mike Galazin


======================================

--- In StereoDataMaker@yahoogroups.com, "David Sykes"
<killspammers2@...> wrote:
>
> Duke wrote:
>
> >   I have to plead ignorance and ask what a 'one-off' test is.
>
> Ehhhh .. a test that has only been done once  :-)
>
>
> All the CRT synch tests have only been provided by one tester in all
> cases.
>
> It would be useful for other to repeat the tests to see if they get
> similar results.
>
>
>
> David
>

#20 From: "rexlion22" <3Dslides@...>
Date: Mon Feb 18, 2008 11:15 pm
Subject: Re: A570 or A720
rexlion22
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Someday when you see the distant wildlife (or whatever) and you want
to zoom in as far as possible, the A720's extra zoom will come in
handy.  Those instances may be relatively infrequent, but IMO it's
nice to have when the occasion arises.

Mike Galazin


=======================================
--- In StereoDataMaker@yahoogroups.com, The Duke <matrix222@...>
wrote:
>
> I'm currently sitting on the fence (having a difficult time making
a decision) whether to buy two A570 or two A720 cameras.
>
>   As I recall, the A720 had slightly better sync than the A570.
Also, I was wondering about the script download on the SDM website.
I see the 710 but not the 720 listed.
>
>   Reviews say that image quality (especially corner sharpness) is
slightly better on the A720, but I'm wondering if this will make any
practical difference.  Most of my 3D shots will be viewed on
computer, I usually make 4X6" pairs in Stereo Photo Maker, and an
occasional 2D enlargement up to 8X10.  The longer zoom range on the
A720 is the only practical advantage that I can see.
>
>   Any comments are welcome.  :-)
>
>   Duke

#19 From: "David Sykes" <killspammers2@...>
Date: Mon Feb 18, 2008 10:34 pm
Subject: Re: A570 or A720
microfunguy
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Duke wrote:

>   I have to plead ignorance and ask what a 'one-off' test is.

Ehhhh .. a test that has only been done once  :-)


All the CRT synch tests have only been provided by one tester in all
cases.

It would be useful for other to repeat the tests to see if they get
similar results.



David

#18 From: "David Sykes" <killspammers2@...>
Date: Mon Feb 18, 2008 8:42 pm
Subject: Re: EXIF data with SDM
microfunguy
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JoseCarlos Fernandez wrote:

> Do you know if it could be possible to set Exif data in the pictures
> taken when using SDM?

It is not possible to add information before the picture is saved.

> I am thinking in setting the rotation tag for the camera that is
> rotated 180º

On my A620, I can get that information from the orientation sensor.

Unfortunately, many other cameras do not distinguish between upright
and upside down.

If batch-converting folders of images with SPM, you can specify that
images in one folder are rotated 180 degrees.


By choosing the SDM option to save XML files, all stereo data will be
saved with each image.

I will add orientation to that file.

If information is added to EXIF data by using a utilty programme,
there is a danger that some editing programme may discard that data.

Your XML files will remain as a record of the stereo parameters.

By opening the XML file with a browser (only InternetExplorer
unfortunately with the stereo_data.xsl file that I provide), you will
see your image displayed with all stereo data.

See the website for further details and an example.



David
David

#17 From: The Duke <matrix222@...>
Date: Mon Feb 18, 2008 8:27 pm
Subject: Re: Re: A570 or A720
matrix222
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Thanks, David
 
I have to plead ignorance and ask what a 'one-off' test is.
 
Duke

David Sykes <killspammers2@...> wrote:
Duke wrote:

> I see the 710 but not the 720 listed.

It is not officially released yet .. you can always ask for it here.

There are owners of A570 and A720 twin-rigs in this Group.

A570 synch about 1/2000 sec (see Masuji's gallery), A720 synch about
1/4000 sec.

These figures are based on one-off tests.

David



#16 From: "David Sykes" <killspammers2@...>
Date: Mon Feb 18, 2008 8:11 pm
Subject: Re: A570 or A720
microfunguy
Offline Offline
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Duke wrote:

> I see the 710 but not the 720 listed.

It is not officially released yet .. you can always ask for it here.

There are owners of A570 and A720 twin-rigs in this Group.

A570 synch about 1/2000 sec (see Masuji's gallery), A720 synch about
1/4000 sec.

These figures are based on one-off tests.



David

#15 From: The Duke <matrix222@...>
Date: Mon Feb 18, 2008 6:15 pm
Subject: A570 or A720
matrix222
Online Now Online Now
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I'm currently sitting on the fence (having a difficult time making a decision) whether to buy two A570 or two A720 cameras.
 
As I recall, the A720 had slightly better sync than the A570.  Also, I was wondering about the script download on the SDM website.  I see the 710 but not the 720 listed.
 
Reviews say that image quality (especially corner sharpness) is slightly better on the A720, but I'm wondering if this will make any practical difference.  Most of my 3D shots will be viewed on computer, I usually make 4X6" pairs in Stereo Photo Maker, and an occasional 2D enlargement up to 8X10.  The longer zoom range on the A720 is the only practical advantage that I can see.
 
Any comments are welcome.  :-)
 
Duke   

David Sykes <killspammers2@...> wrote:
A new folder has been added to scripts for the A570 and A720 cameras.
In future, it may apply to other cameras.

The Canon software will get or set various camera properties if you
provide it with the appropriate 'magic number'.

The 'magic number' is technically referred to as a 'property-case'.

If you know the numbers, you can get the value of a property (such as
white-balance) using your own script.

In script 'Synch_L.bas', we have :-

rem get current flash status
get_prop 16 f

For many cameras, property-case '16' retrieves the flash-status and
puts the value in user-variable 'f' :-

0 = AUTO
1 = ON
2 = OFF

On the A570/A720 we use :-
get_prop 143 f

Before we dim the left camera flash, we want to save its current
override setting :-

rem get current flash override value
get_prop 28 f

On the A570/A720 we use :-
get_prop 127 f

Simply use the scripts provided.

David



#14 From: "JoseCarlos Fernandez Gutierrez" <skdzzz@...>
Date: Mon Feb 18, 2008 3:46 pm
Subject: EXIF data with SDM
josecarlosfe...
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Do you know if it could be possible to set Exif data in the pictures taken when using SDM?

I am thinking in setting the rotation tag for the camera that is rotated 180º

Not sure if other data as for example stereobase (should be set manually) could be possible to set.

Any idea from the SDM designers?


#13 From: "David Sykes" <killspammers2@...>
Date: Mon Feb 18, 2008 11:09 am
Subject: Re: Using the camera's internal flash
microfunguy
Offline Offline
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A new folder has been added to scripts for the A570 and A720 cameras.
In future, it may apply to other cameras.

The Canon software will get or set various camera properties if you
provide it with the appropriate 'magic number'.

The 'magic number' is technically referred to as a 'property-case'.

If you know the numbers, you can get the value of a property (such as
white-balance) using your own script.

In script 'Synch_L.bas', we have  :-

rem get current flash status
get_prop 16 f

For many cameras, property-case '16' retrieves the flash-status and
puts the value in user-variable 'f' :-

0 = AUTO
1 = ON
2 = OFF


On the A570/A720 we use :-
get_prop 143 f


Before we dim the left camera flash, we want to save its current
override setting :-

rem get current flash override value
get_prop 28 f

On the A570/A720 we use :-
get_prop 127 f


Simply use the scripts provided.



David

#12 From: "David Sykes" <killspammers2@...>
Date: Mon Feb 18, 2008 10:50 am
Subject: Re: Synch tests on new cameras
microfunguy
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Rick Schneider wrote:

> it is the SD950 IS that has 12 MPx and larger sensor,not the SD1000

> Any plans to do synchro tests on that one...?


This is the page to keep an eye on (assuming it is up-to-date) :-

http://chdk.wikia.com/wiki/For_Developers


The SD950 reference is coloured black meaning no-one has dumped the
firmware (the camera software) yet.

Firmware has to be dumped and then the tedious process of porting to
the basic CHDK has to be done.

After that it is relatively straightforward to port to SDM and test if
USB-remote can be made to work.

If it does, you have to take a chance and buy or borrow two and do the
CRT synch test.


David

#11 From: "David Sykes" <killspammers2@...>
Date: Mon Feb 18, 2008 10:44 am
Subject: Re: Cable question
microfunguy
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Craig wrote:
>
> Iin the "Continuous-shooting synchronised-flash PCB" all 4 pins of the
> usb connector are used, is there any benefit to this or do you get the
> same results from just using power and ground?


Hi Craig.

The connector SV3 on the right-edge of the circuit-board only uses
power and ground.

Two connections are for the left camera and two are for the right camera.

You join the red and black wires of your USB cable there.

These are just logic signals, they do not provide power for the camera.



David

#10 From: "weirdscience2004" <stereophoto@...>
Date: Mon Feb 18, 2008 12:30 am
Subject: Cable question
weirdscience...
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Iin the "Continuous-shooting synchronised-flash PCB" all 4 pins of the
usb connector are used, is there any benefit to this or do you get the
same results from just using power and ground?
Craig

#9 From: "Rick Schneider" <rschneider@...>
Date: Sun Feb 17, 2008 6:48 pm
Subject: RE: Synch tests on new cameras
rick38odu
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Doh! Sorry, it is the SD950 IS that has 12 MPx and larger sensor, not the SD1000… sorry.

 

Any plans to do synchro tests on that one…?

 

From: StereoDataMaker@yahoogroups.com [mailto:StereoDataMaker@yahoogroups.com] On Behalf Of Rick Schneider
Sent: Sunday, February 17, 2008 10:26 AM
To: StereoDataMaker@yahoogroups.com
Subject: RE: [StereoDataMaker] Synch tests on new cameras

 

Wow, that is great news. The SD1000 in particular looks very interesting. This is a 12 megapixel sensor, with larger sensor size (and so, better high-ISO performance). Also, as I wrote on photo_3D, I can’t help but think that the IXUS/Elph style cameras have great potential for making a very nice compact rig.

 

From: StereoDataMaker@yahoogroups.com [mailto:StereoDataMaker@yahoogroups.com] On Behalf Of David Sykes
Sent: Sunday, February 17, 2008 4:27 AM
To: StereoDataMaker@yahoogroups.com
Subject: [StereoDataMaker] Synch tests on new cameras

 

In about a weeks time, we should have the results of synchronisation
tests on the ixus55/SD450 and ixus70/SD1000.

The person who ported the basic CHDK to the the ixus55 learned a lot
from the Ukrainian hackers.

The good news is .. he is a stereo photographer.

The even better news is .. he is a (quiet) member of Photo3D !

That experience will be invaluable when porting other cameras.

David


#8 From: "Rick Schneider" <rschneider@...>
Date: Sun Feb 17, 2008 6:26 pm
Subject: RE: Synch tests on new cameras
rick38odu
Offline Offline
Send Email Send Email
 

Wow, that is great news. The SD1000 in particular looks very interesting. This is a 12 megapixel sensor, with larger sensor size (and so, better high-ISO performance). Also, as I wrote on photo_3D, I can’t help but think that the IXUS/Elph style cameras have great potential for making a very nice compact rig.

 

From: StereoDataMaker@yahoogroups.com [mailto:StereoDataMaker@yahoogroups.com] On Behalf Of David Sykes
Sent: Sunday, February 17, 2008 4:27 AM
To: StereoDataMaker@yahoogroups.com
Subject: [StereoDataMaker] Synch tests on new cameras

 

In about a weeks time, we should have the results of synchronisation
tests on the ixus55/SD450 and ixus70/SD1000.

The person who ported the basic CHDK to the the ixus55 learned a lot
from the Ukrainian hackers.

The good news is .. he is a stereo photographer.

The even better news is .. he is a (quiet) member of Photo3D !

That experience will be invaluable when porting other cameras.

David


#7 From: "David Sykes" <killspammers2@...>
Date: Sun Feb 17, 2008 12:27 pm
Subject: Synch tests on new cameras
microfunguy
Offline Offline
Send Email Send Email
 
In about a weeks time, we should have the results of synchronisation
tests on the ixus55/SD450 and ixus70/SD1000.

The person who ported the basic CHDK to the the ixus55 learned a lot
from the Ukrainian hackers.


The good news is  .. he is a stereo photographer.

The even better news is .. he is a (quiet) member of Photo3D !


That experience will be invaluable when porting other cameras.



David

#6 From: "akdens2" <akdens2@...>
Date: Sat Feb 16, 2008 12:26 pm
Subject: Re: pictures of my remote
akdens2
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--- In StereoDataMaker@yahoogroups.com, "Werner Bloos" <wbloos@...>
wrote:
>
> I added some pictures of my remote for SDM (see Photos on this
group)
> - it's a 3xAA battry holder (inside: 3* 1.2V rechargeable
battreies),
> a switch and mounted USB cables (90cm long) - I have also a right
> angle mini USB adapter to reduce stereobase adapter is only 10mm
wide
> (adds 10mm stereobase)
>
> greetings
> Werner
>
> PS: I will sell this as well:
> - the remote without batteries: EUR 15.-
> - the remote with ONE right angele adapter: EUR 21.-
> - the remote with TWO right angele adapters: EUR: 27.-
> plus shipping worldwide - adapters are not sold separate!
>


Hello Werner,

I want to buy the remote with two r.a.adapters.
Please send payment information.
Oktay

#5 From: "David Sykes" <killspammers2@...>
Date: Sat Feb 16, 2008 12:00 pm
Subject: Re: Using the camera's internal flash
microfunguy
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> To prove the script does dim the flash, run script 'dim_flash.bas'

I forgot to mention, all those scripts are in this group folder
'File\Scripts'.


David

#4 From: "David Sykes" <killspammers2@...>
Date: Sat Feb 16, 2008 11:47 am
Subject: Using the camera's internal flash
microfunguy
Offline Offline
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When the camera is in Tv mode and we enable flash on BOTH cameras, on
pressing the USB-remote button the preflash fires on both cameras.

Presumably, this allows the cameras to measure white-balance.

On releasing the button, the left camera fires immediately but at -4
stops reduced-power.

After a delay equal to half the shutter-speed, the right flash fires
at full-power.

Script 'Synch_R.bas' assumes a shutter-speed of 1/250 sec.

This is fast for stereo synch but works on the cameras tested so far.

If this gives an unacceptable success-rate you will need to set a
lower shutter-speed.

For this to work, we need to set the correct delay.

1/250 sec = 1000/250 msec = 4 = 40 SDM units of 0.1msec.

We want to delay firing the flash until the middle of the exposure so
we set fine delay to '20'.

There are various parameters in the camera that we need to access such
as flash status (on/off/auto) and flash override value.

As new cameras are introduced, the 'magic numbers' (property-case
values) needed to access these parameters may change and we will need
to determine them.

If the numbers have changed, the camera may hang .. just remove the
batteries.

Post details of your camera model.

To prove the script does dim the flash, run script 'dim_flash.bas' on a
single camera and take photos in a darkish location.

The script will take two images, the second should be darker than the
first.

You can try this even if you do not yet have a twin-rig !


David

#3 From: "Werner Bloos" <wbloos@...>
Date: Sat Feb 16, 2008 10:41 am
Subject: pictures of my remote
wbloos
Offline Offline
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I added some pictures of my remote for SDM (see Photos on this group)
- it's a 3xAA battry holder (inside: 3* 1.2V rechargeable battreies),
a switch and mounted USB cables (90cm long) - I have also a right
angle mini USB adapter to reduce stereobase adapter is only 10mm wide
(adds 10mm stereobase)

greetings
Werner

PS: I will sell this as well:
- the remote without batteries: EUR 15.-
- the remote with ONE right angele adapter: EUR 21.-
- the remote with TWO right angele adapters: EUR: 27.-
plus shipping worldwide - adapters are not sold separate!

#2 From: "Damir Vrancic" <crunchy_3d@...>
Date: Sat Feb 16, 2008 10:21 am
Subject: Re: SDM Synchronisation Tests
crunchy_3d
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> I have posted the spreadsheets in Files folder for synchronisation
> tests carried-out on some supported cameras.

Data for A640 has been added (measurements were taken in continuous
mode). The file type is ordinary txt file.

Damir

#1 From: "David Sykes" <killspammers2@...>
Date: Sat Feb 16, 2008 12:16 am
Subject: SDM Synchronisation Tests
microfunguy
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Hello all !

I have posted the spreadsheets in Files folder for synchronisation
tests carried-out on some supported cameras.

This gives you an idea of what is involved.

Currently, mis-synch varies from 1/2000 sec to 1/16,000 sec, depending
on camera model.

So far, these are one-off tests.

It would be interesting to know if synch varies with the same model of
camera.


USB-remote is so far tested on ixus800, A570, A620, A630, A640 and A720.

G7 results results are expected soon.

Hopefully we will receive some real-life images demonstrating good synch.


David

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