expanding exposure times on a590

waterwingz

11480

Re: expanding exposure times on a590

« Reply #20 on: 16 / January / 2017, 10:51:05 »

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Quote from: sequencer on 16 / January / 2017, 10:45:24

It would be nice if this was done in C to speed it up and make it part of chdk. Perhaps a timer/hook to refresh the screen a lot faster and display the EV bar without having to press the shutter release button to update it. I like the script's EV bar, the A720IS doesn't have one, the A590IS does.

I don't think coding it in C would change the response - the Lua interpreter is extremely fast. There have been several discussion about refreshing screens more often for many CHDK things (especially in shooting mode) but the concern has always been one of overloading the processor and interferring with the actual shooting process.

Meanwhile, I have been working on something along the lines of what you suggest - hopefully I can post a first release beta version in the next couple of weeks for comments.

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Ported : A1200 SD940 G10 Powershot N G16

waterwingz

11480

Re: expanding exposure times on a590

« Reply #21 on: 16 / January / 2017, 11:42:39 »

Quote from: shinnen on 16 / January / 2017, 10:25:06

However, I still cannot exit tv_control back to the camera's native functions, unless I go into the CHDK menu and load the default.lua. With CHDKplus, pressing the alt key returns me to the camera's native functions. If I press the alt key in tv_control, the tv_control GUI disappears, and the camera's GUI appears, but the camera insists on using the most recent tv_control shutter speed, even though I appear to be able to change the settings. I can zoom in and out while CHDKplus is running, but cannot zoom in and out while tv_control is running. I would like to be able to use the zoom function to zoom in an out.

I think I get it now. Try this ..

tv_control.lua (2.29 kB - downloaded 11 times.)

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Ported : A1200 SD940 G10 Powershot N G16

sequencer

Re: expanding exposure times on a590

« Reply #22 on: 16 / January / 2017, 12:45:31 »

>I think I get it now. Try this ..

On the A720IS, the new version ( TV Control 2) won't shoot when
the shutter button is fully pressed. And the script ends with: ** Interruted ** ** Finished **.
Zoom levers work now.

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waterwingz

11480

Re: expanding exposure times on a590

« Reply #23 on: 16 / January / 2017, 12:53:07 »

Quote from: sequencer on 16 / January / 2017, 12:45:31

On the A720IS, the new version ( TV Control 2) won't shoot when
the shutter button is fully pressed. And the script ends with: ** Interruted ** ** Finished **. Zoom levers work now.

That's what its supposed to do. If you press the shutter button while in <ALT> mode it stops the script. If you press the <ALT> key then you are back in "regular Canon mode" except for the shutter speed being overridden. You can "shoot" there.

It's possible to make the shutter button actually take a picture instead of halt the script. But with a couple more changes like that, we might as well just use CHDKplus.lua

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Ported : A1200 SD940 G10 Powershot N G16

sequencer

Re: expanding exposure times on a590

« Reply #24 on: 16 / January / 2017, 13:39:07 »

>But with a couple more changes like that, we might as well just use
>CHDKplus.lua

Very true

But I like this lite version.

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shinnen

Re: expanding exposure times on a590

« Reply #25 on: 16 / January / 2017, 13:52:45 »

Hi,
Yes, I'm having the same problem. I am not able to take a picture, unless I exit tv_control 2. I get the same 'interrupted' script, usually followed by the shortcut menu. I can easily get back to the camera's native settings and take pictures, but not in tv_control 2.
...... john

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waterwingz

11480

Re: expanding exposure times on a590

« Reply #26 on: 16 / January / 2017, 23:20:23 »

Quote from: shinnen on 16 / January / 2017, 13:52:45

Yes, I'm having the same problem. I am not able to take a picture, unless I exit tv_control 2. I get the same 'interrupted' script, usually followed by the shortcut menu. I can easily get back to the camera's native settings and take pictures, but not in tv_control 2.

It's not a problem. That's how it's supposed to work.

But I give up. Attached is an updated script that lets you shoot while in <ALT> mode via the shutter button. Press the MENU key when you are in <ALT> mode if you want to exit the script.

This version has one interesting anomaly - at least on my G10. When you shoot in <ALT> mode, Canon Shot Review mode opens immediately after the shot (even if not enabled in the Canon menu). Tap the shutter with a "half press" to close it.

tv_control.lua (2.54 kB - downloaded 11 times.)

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Ported : A1200 SD940 G10 Powershot N G16

sequencer

Re: expanding exposure times on a590

« Reply #27 on: 17 / January / 2017, 11:53:39 »

I like this version of tv_control.lua the best. Thanks!

If I could only have for the A720IS, an Exposure Level Indicator (see attached image). One that updates itself without flickering nor having to press any button, just like the Canon one on the A590IS and others. Yes, I know this can overload the processor and it is hard to do, so I understand if it is not possible.

Clipboard02.jpg (75.36 kB, 835x438 - viewed 25 times.)

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waterwingz

11480

Re: expanding exposure times on a590

« Reply #28 on: 17 / January / 2017, 18:24:34 »

Quote from: sequencer on 17 / January / 2017, 11:53:39

If I could only have for the A720IS, an Exposure Level Indicator (see attached image). One that updates itself without flickering nor having to press any button, just like the Canon one on the A590IS and others. Yes, I know this can overload the processor and it is hard to do, so I understand if it is not possible.

I agree that would be nice. None of my five or six cameras have an Exposure Level Indicator like your A590. If I had been able to figure a way how to do it, the CHDKplus.lua script would have included one.

Here's the only information I was able to find with a forum search : checking exposure - best method?
Not too helpful I'm afraid.

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Ported : A1200 SD940 G10 Powershot N G16

shinnen

Re: expanding exposure times on a590

« Reply #29 on: 18 / January / 2017, 09:30:00 »

Hi Waterwingz,
This is workable script. The full range of speeds seems to be there. You've fixed most of the problems. Nice! The main problem is that I can't really get out of it, once in. If I hit the alt button, it says 'script paused' but insists on using the last shutter speed used while in the script, regardless of what I set the speed at. Shuting the camera off and on doesn't change anything. (I have it set to 'auto start off'.) I have to load the default script to get back to the camera's native state. It will work in a pinch though.
Thanks,
.... john

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