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Open Camera Controller >> OCC User Discussion >> SHUTTER HOLD links to a useful program
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Message started by ehong33234 on 04/19/10 at 22:58:27

Title: SHUTTER HOLD links to a useful program
Post by ehong33234 on 04/19/10 at 22:58:27
I am curious to know if anyone has tried this mod using the Canon XSI. If so, what were your results?

Thanks in advance!

Title: Re: Canon XSI (EOS 450D)
Post by Martin Clark on 05/28/10 at 15:40:57
i tried with 500d, exposures are 10% out like 54s on 60s exposure i havent tried for a long time i havent got round to it but it supposedly works.

Title: Re: Canon XSI (EOS 450D)
Post by Achim Berg on 05/28/10 at 15:58:11
I tested the occ on several cameras. 400D, 550D, 20D, 30D, 40D, 50D, 5D and 7D

Last tested was the OCC Unit on a Canon 400D. It works fine. Tested were several seven shot controlling by the DS. Once only 6 pictures were shot. In  that case we reduced the time by the DS Bracket Software to a minimum. The used 400D works hard at the limit during that testcase. Longer  exposure times controlled by the DS  were tested without any problems.

After reducing the writespeed in the Bracket Soft ( Point memory set to the middle ) everything works fine. The setup by the DS was set to fast because standard is set for a 5D. The from the DS sended sequence came to fast and so the 400D was not able to accept them because the unit was busy between each taken photo.


Title: Re: Canon XSI (EOS 450D)
Post by Steve Chapman on 05/28/10 at 19:06:23
Ideally someone (OK, me, later today) with an OCC and a 450D will mod the code to make a XSI specific version by setting the memory card timer lower by default, & tweak the timings in the shot table. That's the beauty of open source. All of the DS compiler tools are free, and one does NOT need an Arduino programmer to change the DS side of the code.

This is what I did for my Sigma SD14, if anyone wants that version, let me know.

I could point out that the times in the shot length table were based on the accuracy of the RTC in the DS, though they can easily be changed. I'll connect the DS to a stopwatch trigger instead of a camera to see if there is any variation amongst DS types. (Added to list of things to do.)

Title: Re: Canon XSI (EOS 450D)
Post by Steve Chapman on 05/29/10 at 00:02:10
Sorry for the delay, lunch at Disney turned into one of those three-hour pre-holiday leisure spells.

Here is an XTi mod, with subtly reduced timing to account for the lack of UDMA, and a 10% adjustment in shot time (because the figures you gave are 10% off).

http://PanoCamera.com/Releases/145_custom_xti_version.nds

Title: Re: Canon XSI (EOS 450D)
Post by Martin Clark on 06/04/10 at 21:51:30
spot on mate..

Title: Re: Canon XSI (EOS 450D)
Post by Martin Clark on 06/11/10 at 18:36:36
i have been testing this afternoon and i tested a 60s exposure and it came out at 64.5 on the lcd (close as dammit to 65) (all exposures need taking 13.333 recurring %)


UPDATE: 500d DOESNT shoot under 1s w/ cable it automatically holds on till 1s is up then closes the shutter

isit the cable i have got or isit the camera limitations? (im guessing canon have locked it at 1s)

pic of board and my setup ha.

_MG_5243.JPG (Attachment deleted)

Title: Re: Canon XSI (EOS 450D)
Post by Steve Chapman on 06/11/10 at 18:56:05
We can tweak the timing multiplier in the XSI specific version. The 1 second issue needs to be figured out, though. Try using testing with this:

http://PanoCamera.com/Releases/Shutter_hold.nds

For troubleshooting purposes, see if you can trigger any shots shorter than 1 second with this utility.

Title: Re: Canon XSI (EOS 450D)
Post by Martin Clark on 06/11/10 at 19:40:02
nope just holds it till one second.

Title: Re: Canon XSI (EOS 450D)
Post by Martin Clark on 06/11/10 at 19:40:47
dno if it could be my hardware though.

Title: Re: Canon XSI (EOS 450D)
Post by Steve Chapman on 06/12/10 at 23:06:14
That's wacky. Anybody have any suggestions on how to troubleshoot this?

Title: Re: Canon XSI (EOS 450D)
Post by Martin Clark on 06/13/10 at 00:41:21
use nd filters to the max,... chdk... probs but i wouldnt wanna crappity smack my camera. since i dont have anything to replace it.

Title: Re: Canon XSI (EOS 450D)
Post by Martin Clark on 06/26/10 at 23:17:04
500d works on maxiumum save speed <my mistake> because i think i didnt have it on continuous shoot mode. i thaught it wasnt at 3fps! -.-

Title: Re: Canon XSI (EOS 450D)
Post by Martin Clark on 06/26/10 at 23:17:24
500d works on maxiumum save speed <my mistake> because i think i didnt have it on continuous shoot mode. i thaught it wasnt at 3fps! -.-

Title: Re: SHUTTER HOLD links to a useful program
Post by ehong33234 on 08/14/10 at 21:21:25
Does anyone have a video of the OCC in action from startup to shutter release? I can't for the life of me get this thing to work. I've purchased a working OCC from Achim but can't get any shutter fire on my camera and I have tried EVERYTHING on here, read every post but still no luck.

Anyone have luck on the XSI? Help please!!!

Note: I think there is an issue with the DS not sending the proper shutter signal to the controller because I can get the shutter to release on the camera if I use a paperclip to connect the solder points on the shutter wiring on the board. So I know the shutter cable works and the board led blinks when the bracketing fires on the program. Yet no signal to the camera for shutter.

Title: Re: SHUTTER HOLD links to a useful program
Post by Steve Chapman on 08/15/10 at 22:02:54
Cool! A thread hijacking! I'd ask Achim to swap it out for you as a troubleshooting step.

Title: Re: SHUTTER HOLD links to a useful program
Post by Achim Berg on 08/15/10 at 22:54:02
Hello Steve,

no problem, Edson is allready contacted ;)


Title: Re: SHUTTER HOLD links to a useful program
Post by Martin Clark on 08/20/10 at 19:24:45
wires maybe dodgy, doesnt have a full connection,, try wiggling it.

Title: Re: SHUTTER HOLD links to a useful program
Post by Achim Berg on 08/22/10 at 08:05:44
contacted Edson and we found out that the cables were solderd in the wrong way. Resoldering the cables to the right contact made the unit working. Now everything is fine. ;)

Title: Re: SHUTTER HOLD links to a useful program
Post by spittle on 09/28/10 at 18:24:55
Steve - your modded 400D software does work for shutter speeds under 1 sec. But not with mirror lockup (certainly after initial tests anyway).

All exposures under 1 sec appear to work but it saves 1 second into metadata despite this being incorrect.

There's no way to verify the accuracy of the shutter speed but you can clearly hear the difference in shutter speeds and can see the results clearly in the exposures.

This is great though still, certainly untill I can afford a decent camera, and a range of ND filters.

Title: Re: SHUTTER HOLD links to a useful program
Post by spittle on 09/28/10 at 18:47:25
Here are some images. Would be great if this could be developed to include working mirror lockup.
OCC-XSi-Shutter-speed-test1.jpg (Attachment deleted)

Title: Re: SHUTTER HOLD links to a useful program
Post by Steve Chapman on 10/01/10 at 05:21:02
The issue never really bothers me much, in Photomatix + others you simply tell it what stepping rate you used. I've found that not having the time info actually gives you more control: try telling your HDR software that you used 4-stops or 1/3-stop stepping on the same set of images and watch the mathmagic. For the movie Paul I deliberately misinformed the HDR calculations to better extract pure ambient lighting for textures.

Title: Re: SHUTTER HOLD links to a useful program
Post by spittle on 10/01/10 at 07:44:41
I agree, I don't think the identical metadata is terribly important, the results I've been getting are perfectly fine for merging.

How tricky is it to amend the source code to allow mirror lockup on your modified 400D software?

I've had a look, and while I can see the files all pointing to each other I really would have a clue!

Title: Re: SHUTTER HOLD links to a useful program
Post by Steve Chapman on 10/01/10 at 19:26:30
I wonder...apologies...if you are setting mirror lockup in your camera menu first?

Title: Re: SHUTTER HOLD links to a useful program
Post by spittle on 10/01/10 at 20:55:31
Camera was set to mirror lockup and NDS to 2 sec mirror. It just kinda went haywire, but it works fine with no mirror.

Title: Re: SHUTTER HOLD links to a useful program
Post by spittle on 10/03/10 at 17:18:19
Just tried a few more tests:

The xti bracket software does not appear to work using mirror lockup regardless of whether exposures are below or above 1 second. All exposures appear identical with 1 second in the metadata.

I think there's something funny going on with the number/timing of signals of each exposure as the sequence of clicks sound different to when using mirror lockup on the orig bracket software.

So currently I can go as fast as 1/10 without mirror lockup using xti software, and 1/10 second (with or without mirror lockup) using standard bracket software.

*editted*


Title: Re: Canon XSI (EOS 450D)
Post by Yogie on 04/22/11 at 11:44:33

wrote on 06/11/10 at 18:56:05:
We can tweak the timing multiplier in the XSI specific version. The 1 second issue needs to be figured out, though. Try using testing with this:

http://PanoCamera.com/Releases/Shutter_hold.nds

For troubleshooting purposes, see if you can trigger any shots shorter than 1 second with this utility.


On my 7D and my wifes 40D it seems that the programm is sending out signals although we are not pressing the button and the cameras keep shooting pictures or trying to focus...

Title: Re: SHUTTER HOLD links to a useful program
Post by Steve Chapman on 04/22/11 at 16:05:55
I'll try it on a 7D.

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