It should display “Looking for focus peak”. Do not support remote control. I’ve written a Python binding for gphoto2 , called piggyphoto , available here: The focus is computed from the central area of the image, having x pixels. These are 3 different relative stepsizes for both focusing directions.

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Remote control with PTP and Python

It is meant to be wiki-like, so if you have any additions, please mail them to gphoto-devel lists. The php is computed from the central area of the image, having x pixels. All Powershots released after mid are not capable of remote control anymore.

Only tethered shooting, Firmware 2. Various cameras handle it differently.

STV chipset cameras check list in C file here. I’ve written a Python binding for gphoto2gohoto2 piggyphotoavailable here:. To achieve the wanted focus, multiple calls might need to be done. Sign In Don’t have an account? Here is an experiment for implementing trap focus in tethered shooting mode, with piggyphoto. Manual focusing only works in the “liveview” aka “preview” mode with mirror up. Now point the camera at some object and rotate the focus ring.


Only with updated firmware, see here.

In “non preview” mode the focus motor is only controllable by the autofocus engine. The same applies for libgphoto2 capture support.

The object will be focused; turn the ring a bit farther, ppt the object will become blurred. Most of these cameras do not support remote capture.

SQ chipset cameras check list in C file here. We do not know how to do Bulb capture yet.

Remote controlling cameras

I’ll experiment with it. Gphtoo2 run the script again. Minolta Dimage Z2 Do not support remote control. This is a test bed for various enhancements which can be implemented in Magic Lantern.

My implementation estimates the amount of focus on the live preview image, and takes a picture when it detects a peak well, almost.

The binding is based on ctypes, which means only in theory that you don’t have to compile anything in order to use it. As a workaround for the focus measure not being absolute, I’ve implemented a slightly less easy-to-use procedure: So, a measure for how much the image is in focus will be the difference between the original and slightly blurred image. The list is incomplete and might be incorrect. Switch the camera to movie record mode on the camera.


It will display a live preview. Those are likely able to be supported by libgphoto2 if not already. It’s not really useful in the current state, but if you like it, it may be implemented into Magic Lantern. The eosremoterelease refers to the direct shutter button manipulation, so it can be used for different scenarios outside of immediate shutter releases.

gPhoto – Doc :: PTP/IP documentation

Manual focus driving only works on the “liveview” aka “preview” mode gphotoo2 mirror up. Replace 10s by the number of seconds you want to have your movie long.

However, I don’t know how to compile ptpcam as a shared library.