I've upgraded to GCC 4.6.0, with the attached summon-arm script
(which is a modified version of
https://github.com/dan-wellkeeper/summon-arm-toolchain ). Results:
* With the new GCC, autoexec.bin shrunk by 8k (which I think it's pretty good).
* There was a strange structure alignment problem with picture style
data, and maybe with bitrate structure too: 0x12345678 was displayed
as 0x56781234. The issue was only present with -Os; it was working
fine with -O1 and -O2 (but with larger autoexec.bin). Adding the
"aligned" attribute to the buggy structure fixed the problem. There
might be more issues like this, but I didn't notice anything so far.
* String trimming problems seem to have disappeared as far as I could
notice (yay!).
Code is pretty much the same as with previous builds, except the
alignment attribute:
https://bitbucket.org/hudson/magic-lantern/changeset/548b44db0789
Before doing further changes, I'd like to know if there are more (or
less) side effects from upgrading the compiler, so please report any
issues you find. I'm looking especially for issues which only happen
with only one of last two builds (but not with the other). Thanks.
P.S. This message should have arrived yesterday, but I've looked it up
in the mailing list and it's not there, so I'm reposting it. That's
why this build is still marked as Jun07.
Avidemux+ImageMagick will work too; maybe avisynth too (I didn't try).
You need some coding skills for these.
If you find a better program for doing this, please post a link to it.
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Of course; you have quoted my messages saying how to do this :)
> Is it actually possible to simulate this effect in post?Of course; you have quoted my messages saying how to do this :)
On Fri, Jun 10, 2011 at 6:31 PM, James Donnelly <jam...@easynet.co.uk> wrote:
> It's a shame it is not possible to do with the firmware.
>
> Is it actually possible to simulate this effect in post?
>
> If you expose a static background correctly for long shutter speeds, then
> transient elements, like people walking through will not get fully
> 'developed' because they are not there long enough, resulting in 'ghostly
> apparition' type shots.
>
> I sometimes use this effect for stills; you can photograph buildings with
> apparently no people in front of them, even if people do walk past in
> between the lens and the building - so long as they don't hang around too
> long.
>
>
>
> On 10 June 2011 16:03, Alex <broscu...@gmail.com> wrote:
>>
>>
If you average 30 frames (i.e. mean(frames 1:30) => frame 1;
mean(frames 2:31) => frame 2 and so on, you will get the equivalent of
1 second exposure time.
If you have staccato effect, which is obtained for short exposure
times, it means sensor duty cycle is very low (let's say 10%). In this
case, you are discarding most of the "data", which will result in...
aliasing. Of course, on the temporal axis this time :)
In plain words, frame merging won't remove the staccato effect (it
might reduce it a bit, just like how bluring reduces moire a bit).
I believe the simplest way is to change Frame Merger's source code to
allow for merging more frames. A moving average filter (IIR) may do a
similar job with much less memory overhead than plain averaging (but
the visual effect may be a bit different).
http://www.findthatfile.com/search-10704809-hZIP/winrar-winzip-download-virtualdub-filters-zip.htm
With shutter speeds faster than 1/fps, you expose a frame, then save
it, expose another, save it (with some parallelism involved, of
course). With slower speeds, you will also have to do the averaging,
so it's not just changing a parameter.
Last build is really bad for White Balance. If I am using previous
autoexec.bin it works normal. But after taking picture in liveview my
camera crashed. Last picture is on LCD and camera is frozen. Please
make new build and distribute all the time whole archive of ML in one
file. Distributing autoexec.bin separately is not good... Thank you.
Milan
2011/6/11, Justin Williamson <justi...@gmail.com>:
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Milan Kajnar, dipl. technik
Gordic(c)Reseller - ASI Informační technologie s.r.o., 1. máje 3, 789 85
Mohelnice
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In LV mode, the display will turn back on if you cover the LCD sensor.
I reformatted my cards before this installation.
Symptoms are that the shutter release button becomes unresponsive. After a slight delay it sounds like it is cycling through a very slow shutter release before the mirror drops. Then the camera freezes and the battery must be removed. I have had this experience with three cards.
Another thing I have noticed is that ML may "unboot" after having booted with it, so that all of a sudden I am running without it.
Also force live view always is not working.
Here is what the order of malfunction seems to be.
1) ML "unboots" and the T2i picture counter is blinking.
2) shutter button becomes unresponsive
3) subsequent attempt to press the shutter button results in nothing but the mirror finally drops.
Oh, and yes, sometimes black LCD for no reason, but this is during a hang.
I also sometimes get a hang upon switching between AF and MF.
Lastly, this is all only during LV.
These are just some casual observations. I wish I had more to offer.
Thanks. -Dave
When I'll kill the bugs :)
The version from the repo fixes slow startup issues and some crashes
in photo mode, but sometimes freezes in LiveView (all buttons stop
responding).
I'm always using the bleeding edge on my camera :)
You could consider it a feature (i.e. when you are not sure if you
want high iso / fast shutter, or low iso / long exposure).
Technical: PROP_AE in manual exposure modes is read-only (even with
ISO Auto); in other modes (Tv,Av,P) it's writeable.
The very latest code is the "unified" branch (which will become a
single source tree for all supported cameras). You may start with any
of them ("unified" or "550d").