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I'm looking to get into some photography work and I had a couple questions. I'm quite an amateur at this, unfortunately, so I would appreciate any and all assistance!

I want to be able to control the focus and aperture of a DSLR from my laptop while streaming images from the camera. Is this possible? If so, what would I need to do/get in order to do this? Particularly, I want to be able to do this from code so that I can take sets of images at different focus/aperture settings in succession and do processing on them within my code.

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  • \$\begingroup\$ Do you have a buget or operating system requirement? \$\endgroup\$
    – dpollitt
    Nov 2, 2011 at 0:48
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    \$\begingroup\$ Operating system: Not really, I can run Linux, Windows, or Mac OS X. Budget: Ideally I'd like to be able to use the Canon 5D Mark II I currently have access to, but acquiring a new camera isn't a problem. \$\endgroup\$
    – konstantine
    Nov 2, 2011 at 0:59

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I would look at DSLR Remote Pro. As described on the features page:

DSLR Remote Pro for Windows also includes a DLL and a sample program (complete with C++ source code) which allows other applications to release the camera's shutter and adjust the shutter speed and aperture.

The software supports most Canon DSLR cameras, the 5D Mk II that you already have access to included.

For more details I would check out the help file here, then click on "Running DSLR Remote Pro from other apps" from the navigation on the left.

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    \$\begingroup\$ Ahh, thanks! I took a look at that and I'm not sure that they show code for adjusting focus. I've also found this function in the Canon EOS SDK: kEdsCameraCommand_DriveLensEvf This supposedly will let me drive the lens and adjust focus. I don't have access to the Canon 5D Mk2 just yet, but I'll try this (and DSLR Remote Pro) out once I get my hands on it. Thanks again for the pointer! \$\endgroup\$
    – konstantine
    Nov 2, 2011 at 16:37

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