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500d development

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Offline ats1995

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Re: 500d development
« Reply #2140 on: 18 / December / 2011, 09:52:39 »
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Hmm. I don't know, but when toggling FPS-override, the exposure changes. Higher frame rate means less exposure. Expo-override does still affect exposure, though.
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Canon EOS 500D
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Offline kyselejsyrecek

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Re: 500d development
« Reply #2141 on: 18 / December / 2011, 09:57:17 »
With the previous FW, 1080p40 was actually 1080p20, 720p68 was 720p30 ..I haven't tested 480p.
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Canon EOS 500D, EF-S 17-85mm f/4-5.6 IS USM
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Offline Ulysses

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Re: 500d development
« Reply #2142 on: 18 / December / 2011, 10:02:18 »
I´ve got to go out right now but when I get back I'll confirm everything for really sure! :)
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Offline kyselejsyrecek

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Re: 500d development
« Reply #2143 on: 18 / December / 2011, 10:08:50 »
Quote from: a1ex on 18 / December / 2011, 09:39:56
Maybe the timer in 500D works at lower frequency?

This FW didn't make any difference, Alex.  It works just as I described the previus one - fps override of 40 makes 1080p record at 20fps, fps override of 68 makes 720p record at 30fps.

UPDATE:
Maybe you have uploaded an old one, Alex? With the changes from bitbucket, it seems to be tuned. 22 fps in 1080p stops the LV image updating.

UPDATE 2:
The same thing happens with 720p at 38fps - movie mode is stopped and then restarted with fps override trned off.

I noticed that the screen flickers a bit with this autoexec - this is most visible in play mode and is not much evident, but it really does flicker.
« Last Edit: 18 / December / 2011, 10:20:54 by kyselejsyrecek »
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Canon EOS 500D, EF-S 17-85mm f/4-5.6 IS USM
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Offline a1ex

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Re: 500d development
« Reply #2144 on: 18 / December / 2011, 10:21:25 »
Well... that may be the sensor limit.

Flicker appears after you take the battery out.
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Offline kyselejsyrecek

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Re: 500d development
« Reply #2145 on: 18 / December / 2011, 10:41:51 »
You're probably right about the flicker as it does not appear anymore (although I do not understand why it was here).

Also, limit for the 5x/10x zoom is 28fps in 720p and 480p (I don't know why).

Limit for non-zoomed 480p proves to be 37fps too.
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Offline Coutts

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Re: 500d development
« Reply #2146 on: 18 / December / 2011, 10:46:46 »
uploading a test video now.

Magic Lantern 500d/T1i | FPS Control Testing
read video description for details.


note: as the exposure gets brighter the framerate is getting lower (becuase it modifies shutter speed to 1/fps for some reason). take note of how fast my hand moves at the slow shutter speed (it was around 10fps i think), that's not right because it's encoded at 30fps still.

so even if we shoot 24fps, it will be encoded at 30 and be sped up. we need to figure out how to actually encode video at different framerates now.
« Last Edit: 18 / December / 2011, 11:00:05 by Coutts »
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Offline Liamykins

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Re: 500d development
« Reply #2147 on: 18 / December / 2011, 11:09:21 »
This is great progress! I literally was ecstatic when I read trough these posts, I can see this going a long way, it just needs some working out and problem solving to get everything right. I wish I knew how to help!
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Offline kyselejsyrecek

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Re: 500d development
« Reply #2148 on: 18 / December / 2011, 11:11:19 »
Alex, thanks for the fix, however, I meant that the limits, 28fps in zoom mode and 37 in 720p/480p are the last stable so there's no need to tune them even another notch down :-)
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Offline pat_loonytoon

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Re: 500d development
« Reply #2149 on: 18 / December / 2011, 11:20:41 »
Merry Christmas to us I guess :)
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