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kevinGan / dslrdashboard

Automatically exported from code.google.com/p/dslrdashboard
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Bracketing seems to rely on camera's exp compensation #247

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?

Case A:
1. Camera (Canon 1000d) in M mode
2. Enable bracketing in DslrController
3. Start shooting

Case B:
1. Camera (Canon 1000d) in Av mode.
2. Enable bracketing in DslrController beyond camera's exposure compensation 
range, for example +/-3EV (this camera goes to +/-2 only), 2 frames above, 2 
below
3. Start shooting

What is the expected output? What do you see instead?
In Case A all shots are taken with the same exposure values i.e. no bracketing 
takes place.

In Case B only photos within camera's exposure compensation range (+/-2EV) are 
properly bracketed. Photos outside that range have exposure values equal to the 
"ends" of the compensation range.

I'm not sure if it is more an "issue" or a "feature request" but I'd like to 
see DslrController to actually implement bracketing by forcing specific shutter 
speeds in camera instead of relying on exposure compensation which is very 
limited.

I would be awesome if it could detect what is the slowest shutter speed the 
camera offers (usually 30s) and if calculated exposure time is beyond that it 
would switch to bulb mode and keep the shutter open for as long as it needs. 
I'm not sure if it is possible over USB though.

What version of the product are you using? On what operating system?
Umm... 0.30.33? Current from PlayStore as of 2014-04-13. I can't seem to find 
the version number anywhere in the app...

Original issue reported on code.google.com by tomasz.k...@gmail.com on 13 Apr 2014 at 2:21

GoogleCodeExporter commented 8 years ago 
Please press the 'i' button in the top row and after in the upcoming screen 
press the 'save info' button. It will create a 'device_info.txt' file in your 
Android device DCIM folder. Please send me that file.
Also please note the application name is DslrDashboard.

Please also try the new cross platform version at http://dslrdashboard.info and 
see if bracketing works with it as it should.

Original comment by hub...@gmail.com on 13 Apr 2014 at 2:56

GoogleCodeExporter commented 8 years ago 
First of all let me apologize for mistaking the name of your app, and thank you 
for making it.

I've sent you the device_info file.

I've tried the cross platform verions on Linux x64, both 0.1.1 and 0.1.4 
bracket correctly.

Original comment by tomasz.k...@gmail.com on 13 Apr 2014 at 3:43