Thanks for getting this port going!I have got hold of a 710HS and so far it's looking really good!I have a couple of questions:First, I had previously been using a SX260HS, and during bracketing it was able to get much faster shutter speeds than the 1/3200 maximum achievable by normal means - at least 2 stops worth. When I do this with the 710HS, bracketing doesn't go below 1/3200. (I'm relying on what the image actually looks like here, not the metadata, as that was always 1/3200 on the 260 even with faster shutter speeds.)So I'm wondering if this is just a physical limitation of this model, or whether having faster shutter speeds might be something not yet implemented in the port, or if there is an option I need to enable somewhere to make it happen?
Also, I thought I'd see if I could manually make it use a faster shutter speed, but when I go to the Tv override, and set it to "Short Exposure", I can't manually select a shutter speed shorter than 1/100. It represents the speed as a decimal number and using the arrows changes it by 0.01
What firmware version is your sx710?
I'd also be interested to know what kind of situation you find yourself needing faster than 1/3200.
Like most CHDK numeric inputs, you can change which digit is controlled with the zoom lever. This is a bit tricky on SX710, it likes to jump more than one, but if you tap a few times you should be able to get the one you want.
It's really useful for bracketing for HDR. I usually start with the brightest exposure, then bracket through to the darkest one. With bright scenes (e.g. with sun reflections), the darkest exposure required to capture the bright parts of the image needs to be much shorter than 1/3200.
That makes sense. Here's a test build for 100a with exp_drv implemented.
Brilliant, that works nicely, many thanks! Looks like it's getting over 2 stops shorter than 1/3200, very like the 260HS. That will be a great help!
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