External power supply? - page 5 - General Help and Assistance on using CHDK stable releases - CHDK Forum

External power supply?

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Re: External power supply?
« Reply #40 on: 13 / December / 2009, 06:21:22 »
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P.S. would you happen to know if it is possible to automate the following somehow, e.g. with a script: focus stacking + exposure stacking

I am glad you asked that.
I wondered if anyone would use that feature.
The SDM time_lapse,bas will do it http://stereo.jpn.org/eng/sdm/ubasic.htm

SDM 1.82 will be released in the next hour or so , so check the website again.

This main page  http://stereo.jpn.org/eng/  will be slightly different .

I have no idea if the camera will turn-off after a few hours.



David


Re: External power supply?
« Reply #42 on: 13 / December / 2009, 07:21:53 »
Sweet, I'm glad I asked! How convenient and good timing. I will try it out, thanks!

Re: External power supply?
« Reply #43 on: 13 / December / 2009, 14:28:40 »
http://stereo.jpn.org/eng/sdm/tlapse.htm


http://stereo.jpn.org/eng/sdm/tlapse2.htm

Ok, I've spent quite some time with the script but I'm having problems. When I use "Shots with Focus bracketing (continuous mode) and Tv override" it works fine with focus exposures and Tv exposures set to 3, although taking extra pictures with different exposures every now and then.

The problems emerge when I try to use larger quantities of pictures. When I have Tv exposures 11 and focus exposures 10, the camera then takes 9 different focus exposures (difference of 1 no big deal) but only 6 different Tv exposures, that is does focus stacking with 6 different shutter speeds. My other settings: first delay min 0, first delay sec 0, shoot interval min 0, shoot interval sec 0, num of repeats 1, endless 0, sing/cont/time/burst 1, Tv exposures 11, Focus exposures 10, brack tv/foc/both 2, light/dark/alt 2, num of 1/3 EV 3, equal/auto/digi 0, focus step 50, all the rest default.

I also have problems with longer shutter speeds because it doesn't seem to follow the same pattern. One thing that has occured is that the script doesn't follow the "num of 1/3 EV steps" that I have set to 3. It can take pictures with shutterspeeds of both 0,3sec and 0,4sec even though it's supposed to use differences of 1 EV.


Re: External power supply?
« Reply #44 on: 13 / December / 2009, 16:52:33 »
Post the list of parameter values you are using.

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Re: External power supply?
« Reply #45 on: 14 / December / 2009, 06:12:24 »
I don't know what it is exactly that you are trying to accomplice but to get 3 stacks with a 2EV exposure difference between them, I used the following settings:

In Canon menu, set to continuous mode.
In Timelapse script use the following settings: 

Number of repeats                     1
Endless mode N/Y                      0
Single/Cont/Time/Burst              1
Tv exposures                             3
Focus exposures                        1
Bracket Tv/foc/Both                   2
Light/Dark/Alternate                  2
Num of 1/3 EV steps                  6
Equal/auto/digi 0/2                    1
Focus-step                              50
digiscope focus ref                  500
Blank screen N/Y                      0
Shutdown N/auto/USB               0
Save stack N/Y                         1
Sunrise mode                           0
TXT/CSV                                  0

These are the resulting stacks, stacked with a trail version of Helicon Focus







And these are the saved stack files:

---------------------------------------------------------------------------

Auto focus bracketing with Tv bracketing         

Continuous shooting mode                         

Time                       11:23:28

Focal length         5.9
Aperture             3.2
Tv bracket          1/20

Focused distances (from front of lens) 
and step size                           

    86         0
    92         6
    99         7
   108         9
   119        11
   132        13
   149        17
   172        23
   203        31
   250        47
   326        76
   471       145
   855       384
  4774      3919
   Inf     60761

---------------------------------------------------------------------------

Auto focus bracketing with Tv bracketing         

Continuous shooting mode                         

Time                       11:23:50

Focal length         5.9
Aperture             3.2
Tv bracket           1/5

Focused distances (from front of lens) 
and step size                           

    86         0
    92         6
    99         7
   108         9
   119        11
   132        13
   149        17
   172        23
   203        31
   250        47
   326        76
   471       145
   855       384
  4774      3919
   Inf     60761

---------------------------------------------------------------------------

Auto focus bracketing with Tv bracketing         

Continuous shooting mode                         

Time                       11:24:14

Focal length         5.9
Aperture             3.2
Tv bracket          1/80

Focused distances (from front of lens) 
and step size                           

    86         0
    92         6
    99         7
   108         9
   119        11
   132        13
   149        17
   172        23
   203        31
   250        47
   326        76
   471       145
   855       384
  4774      3919
   Inf     60761

Frans


Re: External power supply?
« Reply #46 on: 14 / December / 2009, 09:35:51 »
Hi Frans and thanks for your reply. To David and Frans: this is not quite the stack I am looking for but to make an example I used the same settings as Frans:

Number of repeats                     1
Endless mode N/Y                      0
Single/Cont/Time/Burst              1
Tv exposures                             3
Focus exposures                        1
Bracket Tv/foc/Both                   2
Light/Dark/Alternate                  2
Num of 1/3 EV steps                  6
Equal/auto/digi 0/2                    1
Focus-step                              50
digiscope focus ref                  500
Blank screen N/Y                      0
Shutdown N/auto/USB               0
Save stack N/Y                         1
Sunrise mode                           0
TXT/CSV                                  0

Camera in continous mode and macro. Here are the results and I think it gets worse the more Tv exposures I add. Look especially on the last one:

Time                       17:09:18

Focal length         4.6
Aperture             2.8
Tv bracket           1/6

Focused distances (from front of lens)
and step size                          

    30         0
    31         1
    32         1
    33         1
    34         1
    35         1
    36         1
    37         1
    38         1
    39         1
    40         1
    41         1
    42         1
    44         2
    46         2
    48         2
    50         2
    52         2
    54         2
    56         2
    59         3
    63         4
    67         4
    72         5
    78         6
    85         7
    94         9
   105        11
   120        15
   140        20
   169        29
   214        45
   293        79
   468       175
  1184       716
   Inf     64351
----------------------------------------------------------------------

Time                       17:09:55

Focal length         4.6
Aperture             2.8
Tv bracket           0.6

Focused distances (from front of lens)
and step size                          

    30         0
    31         1
    32         1
    33         1
    34         1
    35         1
    36         1
    37         1
    38         1
    39         1
    40         1
    41         1
    42         1
    44         2
    46         2
    48         2
    50         2
    52         2
    54         2
    56         2
    59         3
    63         4
    67         4
    72         5
    78         6
    85         7
    94         9
   105        11
   120        15
   140        20
   169        29
   214        45
   293        79
   468       175
  1184       716
   Inf     64351
--------------------------------------------------------

Time                       17:10:47

Focal length         4.6
Aperture             2.8
Tv bracket          1/25

Focused distances (from front of lens)
and step size                          

   -34         0
  -536      -502
  -313       223
  -220        93
  -169        51
  -137        32
  -115        22
   -98        17
   -85        13
   -75        10
   -67         8
   -61         6
   -55         6
   -50         5
   -46         4
   -42         4
   -38         4
   -35         3
   -33         2
   -31         2
   -29         2
   -27         2
   -25         2
   -23         2
   -21         2
   -19         2
   -17         2
   -15         2
   -13         2
   -11         2
    -9         2
    -7         2
    -5         2
    -3         2
    -1         2
     0         1
     1         1
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0
     1         0

Re: External power supply?
« Reply #47 on: 14 / December / 2009, 09:39:12 »
P.S. I'm really looking to get really long exposure times included in the stacking, e.g. 15 seconds. I'm trying to shoot a similar picture as Frans posted above but with the main difference of it being comletely dark outside and the door (window) is open.

In the beginning I replaced the CHDK diskboot file with the SDM file and then downloaded the script. Was this enough?


Re: External power supply?
« Reply #48 on: 14 / December / 2009, 10:14:40 »
Discussion moved here.

Re: External power supply?
« Reply #49 on: 15 / December / 2009, 12:27:59 »
Hi Guys

that discussion was very interesting, i am setting up a year long time lapse project filming the development of a meadow over a whole year, i was going to use and old Nikon Coolpix 995 connected to a 12v battery topped up by a solar panel. I have a small circuit with a light detector and a timer so the camera only comes on in daylight hours and and then takes a shot every 15 mins. The camera turns off completely in between to save power and it works really well....up to a point. My ancient camera only has a 128Mb capacity and at that rate i'd going back every couple of days to change the camera.

I thought i could do the same thing with an A560 i have, with an intervalometer script running. I have loaded ULTRA Intervalometer and set the script to autorun and the camera to start up correctly with the Make card bootable command but when ever I test it to see if it will work the camera starts in PLAYBACK mode and i need to press the Play button for it to start. The only exception to this is if there are no images on the card, in which case it launches the script and takes a few shots.

Obviously i only need one shot when it starts up but at the moment I can't get over this hurdle. Any suggestions from anyone?

Cheers


 

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