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kritzikratzi / edsdk4j

Canon SDK for Java

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Zoom

dgbc opened this issue · comments

commented

It's not an issue but a question.
How can I use zoom features during liveview mode?
Any example is helpful.

Thanks

commented

it goes something like this:

  1. set your focus switch on the camera to AF
  2. start live view
  3. set focus mode to manual (in software, use camera.setFocusMode(MANUAL))
  4. use the focus commands for near/far

does this help?

commented

Thanks for the reply.
It's not quite what I want to achieve.
I'm using E04_LiveView.java as the starting point and I want to create a "zoom" button to toggle the live view zoom. I also created buttons: up, down, left and right, so I can move the zoomed rectangle.
Why does camera.downloadLiveView() always return a 960 x 640 BufferedImage ?

I'm able to scale the BufferedImage but the LiveView just get very slow if I use an old camera.
I hope my question makes sense..

Thanks for your help.

commented

Why does camera.downloadLiveView() always return a 960 x 640 BufferedImage ?
i think that depends on the camera model.
it might be different on different cameras.
anyways, it can't be changed.

I'm using E04_LiveView.java as the starting point and I want to create a "zoom" button to toggle the live view zoom. I also created buttons: up, down, left and right, so I can move the zoomed rectangle.
sorry, was reading your initial question to quickly.
there's a pdf document that comes with the sdk (EDSDK_API.pdf), have you checked if you can find the zoom function there?

best, hansi.

commented

ps. yes, liveview over usb is pretty slow. i think the only way to improve this is by using the hdmi out and a hdmi capture card. but i haven't tried that.