Focus/Shutter speed set, too slow

waterwingz

12132

Re: Focus/Shutter speed set, too slow

« Reply #10 on: 19 / July / 2016, 08:42:08 »

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Quote from: bugbear on 19 / July / 2016, 04:43:05

a busy_loop on get_exp_count() runs, and then shoot_full_only is released.
no checking of get_shooting() is done.

It was found through experimentation that watching get_exp_count() gave a faster indication of when the next shot could be triggered.

Quote

If I have preset, or am automagically setting, my exposure parameters, can I use "shoot_full_only" on its own (i.e. without "shoot_half") as a faster method than "shoot_full"?

Off hand, I'd say "no". In the orginal version of that script (HDR Fast Shooter) using shoot_full & get_exp_count() was almost twice as fast as shoot_full_only and get_shooting().

I can't remember (it was 2.5+ years ago) why the slower version of that script used "shoot_full_only" the way that it does. It seems to me that someone must have tried it and it worked but it's not something the camera firmware would normally expect to see. In the real world, there is no way to active the "shoot_full" bit without the "shoot_half" bit also being set.

Maybe @reyalp or @msl will remember how that using "shoot_full_only" without a "shoot_half" works?

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Ported : A1200 SD940 G10 Powershot N G16

bugbear

57
A630

Re: Focus/Shutter speed set, too slow

« Reply #11 on: 19 / July / 2016, 09:27:29 »

So as not to stall my development, I'm simply using shoot() for the moment.

BugBear

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waterwingz

12132

« Reply #12 on: 19 / July / 2016, 09:59:28 »

You can always experiment and see what works best for you. That's one of the nice parts about scripting once you have chdkptp working for rapid edit & test cycles.

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Ported : A1200 SD940 G10 Powershot N G16

bugbear

57
A630

Re: Focus/Shutter speed set, too slow

« Reply #13 on: 19 / July / 2016, 10:07:20 »

Quote from: waterwingz on 19 / July / 2016, 09:59:28

You can always experiment and see what works best for you. That's one of the nice parts about scripting once you have chdkptp working for rapid edit & test cycles.

I've looked at that, but the overhead of getting it working seems quite high.

Frankly, the time spent experimenting to make the script (much) faster would probably exceed the lifetime saving in shoot time, so shoot() may well be staying.

Let's face it, in the context of setting up and lighting the subject, rigging the tripod, taking the shots, transferring the shots to the computer, running HDR on the right file set(s), and then running combineZP on the right file sets, saving a few seconds on the shooting time is not a big deal.

BugBear

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waterwingz

12132

Re: Focus/Shutter speed set, too slow

« Reply #14 on: 19 / July / 2016, 10:09:36 »

Quote from: bugbear on 19 / July / 2016, 10:07:20

Let's face it, in the context of setting up and lighting the subject, rigging the tripod, taking the shots, transferring the shots to the computer, running HDR on the right file set(s), and then running combineZP on the right file sets, saving a few seconds on the shooting time is not a big deal.

Agreed. Unless your subject moves. Or the lighting changes.

« Last Edit: 21 / July / 2016, 20:07:26 by waterwingz »

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Ported : A1200 SD940 G10 Powershot N G16

bugbear

57
A630

Re: Focus/Shutter speed set, too slow

« Reply #15 on: 19 / July / 2016, 10:51:15 »

Quote from: waterwingz on 19 / July / 2016, 10:09:36

Quote from: bugbear on 19 / July / 2016, 10:07:20
Quote from: waterwingz on 19 / July / 2016, 09:59:28
Let's face it, in the context of setting up and lighting the subject, rigging the tripod, taking the shots, transferring the shots to the computer, running HDR on the right file set(s), and then running combineZP on the right file sets, saving a few seconds on the shooting time is not a big deal.

Agreed. Unless your subject moves. Or the lighting changes.

I'm effectively doing studio still life photography, so I'll get away with it. If I tried to use the same script for (e.g.) landscape, speed of shooting would become much more important.

BugBear

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