Author Topic: Full-resolution silent pictures  (Read 372549 times)

k2121

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Re: Full-resolution silent pictures
« Reply #975 on: April 16, 2017, 08:26:38 PM »
When I shooting in DNG, it take some time to convert picture in camera.
MLV save frames faster.
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a1ex

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Re: Full-resolution silent pictures
« Reply #976 on: April 16, 2017, 08:49:47 PM »
when I shoot silent MLV with intervalometer, every picture is in individual MLV file.

Steps to reproduce?

(just tried on latest nightly, on both simple and full-res modes - each timelapse sequence is saved in a single MLV file)

k2121

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Re: Full-resolution silent pictures
« Reply #977 on: April 16, 2017, 10:38:37 PM »
I copy silent.mo and adv_int.mo from nightly 30 march to sd card and problem is still.
My build is raw_video_10bit_12bit_02apr.
Maybe i'ts bug of this build.
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togg

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Re: Full-resolution silent pictures
« Reply #978 on: May 12, 2017, 08:09:41 PM »
I'm surelly missing something so bear with me. When I select the experimental full res mode the half shutter press does nothing. How do I take the photo? I've tried the other buttons but no luck.

a1ex

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Re: Full-resolution silent pictures
« Reply #979 on: May 12, 2017, 09:07:36 PM »
Took a look at the code and the only code path that could result in "does nothing" would be if you start from some Canon dialog that does not go away on half-shutter (for example, the card full message) - very unlikely. Or, the trivial solution - if the silent pic option is turned off.

All other cases (incorrect shooting mode, incorrect settings, out of memory, autofocus and so on) should result in some error message (either in menu or on the screen), or at least some sort of screen activity.

That means... http://www.chiark.greenend.org.uk/~sgtatham/bugs.html

togg

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Re: Full-resolution silent pictures
« Reply #980 on: May 15, 2017, 06:57:26 PM »
Sorry A1ex, I was trying to solve different raw workflow things when I decided to try the silent module. I never thought it was a bug, just a stupid mistake of mine that someone else could catch fast, and it fact it is. I’m still not very familiar with the 5d3, the live view options confuse me, I was not in “photo mode”. It works perfectly.

Was this discovered recently with the 4k advancements? Or do we had this for a long time? Incredible feature for stills on set and a lot of other situations. It’s not easy to find a silent camera out there even mirrorless.

a1ex

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Re: Full-resolution silent pictures
« Reply #981 on: May 15, 2017, 08:24:53 PM »
In this case, you should get a warning message in the menu (so the behavior should be different from "does nothing").

The post dates appear to be valid. The 4K branch enables short exposures, but the regular version (at long exposures) was there since... the first post on this thread.




lureb74

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Re: Full-resolution silent pictures
« Reply #982 on: May 20, 2017, 03:31:45 AM »
FRSP continuous :
You need nd filter simulation?
How does it work?

The camera take silent pictures in continuous mode, for example, Tv 0.5s, 4 frames :

0.5 + 0.5 + 0.5 + 0.5 = 2s

We can average frames in mlv_dump.

The movement of water/cloud will be like two seconds of exposure.
The image will 1EV more DR.

4 frames -> 1EV
16 frames -> 2EV
64 frames -> 3EV


Writing speed must be shorter than the exposure time.



one vs 20 frames :


Dual ISO alternately (100/1600, 1600/100, 100/1600...) :

I've never been convinced by the dual iso (loss of detail).
I think it should be a good solution, but I'm not 100% sure about because I do not tested in the landscape.



So in theory we get a huge DR.
100/1600 on the 500D give 2.2EV more.
If you averaged 16 frames, 2EV more DR.

Dual iso + 16 frames, give 4.2EV more for 500D  :o

Tree :


Interior :


Hi Greg,
Do this work on 5D3? I can't find anything in the forum...