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500d development

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Offline utnuc

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Re: 500d development
« Reply #1890 on: 25 / November / 2011, 20:22:35 »
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I looked there too, didn't see anything about override or ISO/Sh/Ap.

Just playing around with the camera, I'm guessing these are the 500D's default video settings.  If I turn on camera, enable exposure override the numbers are 400/120/5.6.  If I then disable exposure override and half-press shutter, the camera takes over.  If I then re-enable exposure override, the settings stay at whatever the camera's last auto settings were (800/30/1.4 here). 

How is this supposed to work, Alex?
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Offline ilguercio

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Re: 500d development
« Reply #1891 on: 25 / November / 2011, 20:39:58 »
Alex told me that Exp override can't be set saved as on because it interferes with photo mode.
I'm trying to understand how the 50D handles iso, aperture and shutter.
Do you guys have a 1/0 ss setting?
Do you need more than a click to change aperture from a third of a stop to another?
What iso can you actually choose? On my 50D i can choose 3200 iso and then i get nothing at 6400 and 12800 but i gain another stop at 25600.
But, taking a picture at this setting, i discovered that ML doesn't set 25600 but 6400 because the exposure is just a stop above 3200.
That's strange.
What i think it does is ML enables iso up to 25600 for photo mode, 25600 being the extra stop for the camera (50D can go up to 12800 with expansion), while in video mode maximum iso would be 3200 since it doesn't recognize H1 and H2. So, i guess, 25600 would be the extra stop for video mode resulting in being 6400 and not 25600 as reported. Can you guys do a few tests so i know if my assumption is right?
« Last Edit: 25 / November / 2011, 20:42:25 by ilguercio »
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Offline ilguercio

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Re: 500d development
« Reply #1892 on: 25 / November / 2011, 20:52:39 »
Yes, i can confirm i'm right.
Can you guys tell me what happens on the 500D?
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Offline utnuc

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Re: 500d development
« Reply #1893 on: 25 / November / 2011, 23:22:52 »
I'll look into your ISO question in the morning. 

It seems like the exposure override feature could be automatically set to disable when you switch out of video mode.  Does your 50d do the same thing?  That seems like it'd be a simple fix.
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Offline ilguercio

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Re: 500d development
« Reply #1894 on: 26 / November / 2011, 03:21:13 »
The 50D enters video mode via LV as the 5DII but doesn't have any menu where its options can be changed.
It would be nice to have video mode set to be available in C2 mode, for instance, so you could actually just turn the dial and select it rather than going into ML menu and toggle it on or off.
I think i'll be easier to make exp. override stick to video mode for 500D users, a bit less to have it working properly on the 50D but let's just wait monday.
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Offline ilguercio

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Re: 500d development
« Reply #1895 on: 26 / November / 2011, 10:15:49 »
One more thing, i just tried the fastest shutter speed i could use for recording on my 50D and though i could dial it down to 1/25-24 it actually didn't change the exposure after 1/29.
That makes sense because you can't select a SS faster that the reciprocate of your fps.
So, can you guys select 1/20 when recording at 1080 at 20fps? I don't know why the last speed is 1/24th, though. It could mean 24fps mode is possible or it could just be a fixed value for every canon obviously according to 24p mode.
What's the last SS selectable on the 500D? Enable exp sim and tell me if the exposure changes when you scroll down the last SS.
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Offline mk11174

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Re: 500d development
« Reply #1896 on: 26 / November / 2011, 15:00:15 »
Quote from: ilguercio on 26 / November / 2011, 10:15:49
One more thing, i just tried the fastest shutter speed i could use for recording on my 50D and though i could dial it down to 1/25-24 it actually didn't change the exposure after 1/29.
That makes sense because you can't select a SS faster that the reciprocate of your fps.
So, can you guys select 1/20 when recording at 1080 at 20fps? I don't know why the last speed is 1/24th, though. It could mean 24fps mode is possible or it could just be a fixed value for every canon obviously according to 24p mode.
What's the last SS selectable on the 500D? Enable exp sim and tell me if the exposure changes when you scroll down the last SS.
On my 500d in movie mode of coarse ML dials down to 1/24 in al modes, but as for exposure effect it only changes to 1/29 in 640x480 and 1280x720 and in 1920x1080 it changes exposure down to 1/24 so it looks like with live view anyways, fps means something when it comes to shutter speed cause it makes sense since all modes are 30fps except for 1920x1080 which is 20fps so i am guessing in 1080 mode if ML had a 1/19 or 1/20 setting i am guessing we would be able to use that in 1080, and if one day ml can take control of our frame rate and we can get 24fps in 1280x720 mode then we can make use of 1/24 shutter speed in movie mode.
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Offline pat_loonytoon

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Re: 500d development
« Reply #1897 on: 26 / November / 2011, 15:05:21 »
Yeah 1/30th is technically now the slowest shutter speed, but as you mentioned unless we had 24 fps it isn't going to do anything.
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Offline kyselejsyrecek

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Re: 500d development
« Reply #1898 on: 28 / November / 2011, 09:21:14 »
I can't help feeling that the manual control firmware from Alex is quite unstable. If I press the Erase button in movie mode or in Live View, the ML menu doesn't show until I press the menu button (then it shows about a half of a second after the Canon menu flickers) or zoom in button for example. It then still behaves strangely sometimes and the menu is reopened only if I quit Live View enter it again (when it may be shown right after entering live view, the mirror goes up just after I close the ML menu) or I am not able to close it.

Another thing that I can notice is that the zebras in live view respect the 16:9 top and bottom borders used only in movie mode, which is wrong in live view that shoots 3:2 and it starts 1px below the top border (there's 1px high space between zebras and the top border, but t doesn't overdraw the bottom one - maybe the bottom border overrides zebras?). Also, the AF frame isn't hidden in neither movie mode nor live view and when going from live view to a remapped movie mode (A-DEP in my case), it shows A-DEP mode instead of movie mode and I have to press the Q button that causes showing of the normal shooting display for A-DEP mode (outside of live view) for about 4 seconds and then movie mode is automatically turned on. Also the histogram isn't shown in any of the two modes - the last histogram frame is drawn over the table after exiting movie/lv mode (again, it is not drawn there every time). Another strange behaviour that I have also seen in previous ML versions is, that if I press the menu button when viewing images and then do it again so that the ML menu disappears, it shows the viewed picture overdrawn with LV features (zebras, histogram, spotmeter - no audio meter or bottom bar).

But thank you very much Alex, it has made my day as much as the Coutts' one. It is nice to have manual video controls working finally.
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Canon EOS 500D, EF-S 17-85mm f/4-5.6 IS USM
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Offline kyselejsyrecek

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Re: 500d development
« Reply #1899 on: 28 / November / 2011, 09:38:56 »
I have also discovered that it takes a lot of time to show the Canon zoom using zoom in button in movie mode. I think it might be because of the priority changes. And it is also evident that focus peak is a way stretched on the vertical. Things near to the upper border are overdrawn by focus peak too low and things near the bottom border are overdrawn too high. Maybe I can take a picture of it.
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Canon EOS 500D, EF-S 17-85mm f/4-5.6 IS USM
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