Recent posts

#61

Camera-specific Development / Re: Porting ML to XSi (450D)

Last post by Troncature - April 12, 2024, 05:34:09 PM

Hey guys, I'm having a hard time trying to install ML on my 450D. I've tried everything mentionned in the forums and in the instal guide, but still nothing but a blinking blue led.
I tried with 3 different versions of ML (2018, 2019 and 2021) using EOSCard to make the sd card bootable but nothing.
I also tried formating the card with the camera or with the windows formating tool but it doesnt work either.
And I used 3 different cards thinking they were just not working but no.

None of my solutions worked and what happens is this:
- Screen turns black with blue led turning on
- Screen turns on to firmware update for a split sec
- Then goes back to black with the blinking led
- Autofocus with apperture and shutter speed still work in the viewfinder

If anybody could help me that would be great. Thanks guys

#62

crop_rec and derived builds / Re: Levas' crop_rec_4k experim...

Last post by Levas - April 12, 2024, 05:30:23 PM

Nothing is broken when crop mode is off, the naming is confusing.
I made this to so 1832 width was working again (was available in some older builds, without crop mode it goes to 1824 as maximum width).
Another thing I liked is that in the crop mode menu, you can set the shutter range option to 'full range'.
So when shooting 25 fps, you could use 1/25th shutter time in lowlight.
So I used the 3x3 1832x1030 crop mode for low light situations giving me 1/25th shutter time option.

For low light situations:
Not sure if you have the build with 'LV raw type' option in the debug menu ?B
By default it is set to 0x10, giving maximum dynamic range, but also gives vertical line noise in low light situations. 0x10 also makes it possible to use the high resolutions crop modes.
If you set LV raw type to 0x12 you get much more cleaner (noise wise) video.
But you can't use the high resolutions crop modes (giving corrupted frames with 0x12), but you can use the 3x3 1832x1030 crop mode.
So for ultimate low light situation use:
Crop mode 3x3 1832x1030 with shutter range option set to 'full range'. (And use 1/25th as shutter time)
In debug menu set LV raw type to 0x12.

#63

crop_rec and derived builds / Re: Danne's crop_rec_4k, 5DIII

Last post by kidfob - April 12, 2024, 04:55:49 PM

Question regarding slow motion with Dual ISO at the highest resolution. Im assuming the max is 60fps. What resolution is required for this?

Can someone share required settings with pictures?

Thanks

#64

Raw Video / Re: I am trying to come back t...

Last post by york824 - April 12, 2024, 11:28:53 AM

mmm don't remember if it's cropped but I think its' not, I'm not sure... as I remember 1280@60fps is just a specific preset requiring first to switch to 1080p@30 in Canon menus.

To answer your last question, you always need to apply the following write speed (MB/s) rule of thumb:
( width x height x bit_depth x frame_rate x compression_rate ) / bit_to_MB_conversion
where lossless compression rate is variable depending of light conditions, but you can assume it will be 60% in the worst case.

So if dealing with a 1920x1280 12bits image at 60fps you'll get:
( 1920 * 1280 * 12 * 60 * 0.6 ) / ( 1024 * 1024 * 8 ) = 126.5625 MBps

Generally, a good CF card got a record speed of ~90MB/s, which is enough in most of the cases, but here you can see that you'll have to deal with card spanning and potentially SD overclocking depending of the SD write speed to get proper continuous recording.

Keep also in mind the maximum possible speed of the 5D3 (hardware limitation) is around ~148 MB/s (card spanning + SD overclocking) even with two SD+CF cards reaching ~90MB/s each.

That's great! Thank you again. I am excited to my new old camera this weekend.

#65

Raw Video / Re: I am trying to come back t...

Last post by a.sintes - April 12, 2024, 06:54:50 AM

mmm don't remember if it's cropped but I think its' not, I'm not sure... as I remember 1280@60fps is just a specific preset requiring first to switch to 1080p@30 in Canon menus.

To answer your last question, you always need to apply the following write speed (MB/s) rule of thumb:
( width x height x bit_depth x frame_rate x compression_rate ) / bit_to_MB_conversion
where lossless compression rate is variable depending of light conditions, but you can assume it will be 60% in the worst case.

So if dealing with a 1920x1280 12bits image at 60fps you'll get:
( 1920 * 1280 * 12 * 60 * 0.6 ) / ( 1024 * 1024 * 8 ) = 126.5625 MBps

Generally, a good CF card got a record speed of ~90MB/s, which is enough in most of the cases, but here you can see that you'll have to deal with card spanning and potentially SD overclocking depending of the SD write speed to get proper continuous recording.

Keep also in mind the maximum possible speed of the 5D3 (hardware limitation) is around ~148 MB/s (card spanning + SD overclocking) even with two SD+CF cards reaching ~90MB/s each.

#66

Raw Video / Re: I am trying to come back t...

Last post by york824 - April 12, 2024, 04:22:12 AM

In terms of 5D3 ML builds for doing raw videos, the most up-to-date is currently this one which is basically Danne's build with some additional features, like the ultrafast framed preview for crop modes (and anamorphic).

Then:

1. no matter if cropped or not, Danne's build is the best one for any raw-videos purposes on the 5D3, feature-wise.
In terms of frame rate you can get stable 23.976/24fps with almost all modes (even hi-res), 30 with some and 60fps is possible in 1080p (raw) like in this video:

(warning: both 4K and 120fps outputs here are due to upscaling/frame interpolation in post)

2. 5.7K mode is misleading (and a little bit oversold/trendy imho, compared to 3.5/4K modes) as it's a so-called "anamorphic" preset, meaning in fact a video resolution of 1920x2340 that you will have to desqueeze 3 times horizontally in post to get 5760x2340 (yes, it means a huge loss in quality), the advantage being the usage of the whole full-frame sensor (where other modes are cropped).
It means also that it may not necessarily requires card spanning technique (SD+CF recording) depending of the record bitrate (resolution+framerate+bitdepth), so maybe a CF alone is enough or even maybe a SD supporting overclocking (please refer to this up-to-date known compatiblity list)

Actually card spanning and overclocking are required only if you want to shoot very-high resolutions videos like 3.5K or 4K continuously, which is working pretty well.

Card spanning will alternate writes on both CF & SD to avoid write buffers saturation, meaning in the end you will get multiple chunks of video scattered on the two cards that you will have to join in post using MLVApp or MLVFS (quite transparent).

"live view" (the realtime/hardware-based one) is only available when dealing with native camera resolutions, any crop mode/anamorphic relying then over a quite slow software-based preview, which is at least properly framed in most of the case.
My specific build (with ultrafast preview) speed up things but it's not perfect (please check this video:

) and far from hardware-based achievements like in Bilal's crop mood build for EOS-M.

3. overclock is very reliable if compatible, I'm living in the south of France where the summer is HOT and I never get any overheat issue on the 5D3 even when spending a whole shooting day using it with 3.5K mode, card spanning and overclock quite intensely :-)

Hope it'll help!

Wow that's a lot of valuable information! Thank you sooooo much!!!

Regarding the 60fps mode, I noticed it is slightly lower than 1080P but the image looks beautiful anyway. Is it a cropped image though? How many seconds can I record at 60fps mode?

#67

Raw Video / Re: I am trying to come back t...

Last post by a.sintes - April 11, 2024, 09:24:28 PM

In terms of 5D3 ML builds for doing raw videos, the most up-to-date is currently this one which is basically Danne's build with some additional features, like the ultrafast framed preview for crop modes (and anamorphic).

Then:

1. no matter if cropped or not, Danne's build is the best one for any raw-videos purposes on the 5D3, feature-wise.
In terms of frame rate you can get stable 23.976/24fps with almost all modes (even hi-res), 30 with some and 60fps is possible in 1080p (raw) like in this video:

(warning: both 4K and 120fps outputs here are due to upscaling/frame interpolation in post)

2. 5.7K mode is misleading (and a little bit oversold/trendy imho, compared to 3.5/4K modes) as it's a so-called "anamorphic" preset, meaning in fact a video resolution of 1920x2340 that you will have to desqueeze 3 times horizontally in post to get 5760x2340 (yes, it means a huge loss in quality), the advantage being the usage of the whole full-frame sensor (where other modes are cropped).
It means also that it may not necessarily requires card spanning technique (SD+CF recording) depending of the record bitrate (resolution+framerate+bitdepth), so maybe a CF alone is enough or even maybe a SD supporting overclocking (please refer to this up-to-date known compatiblity list)

Actually card spanning and overclocking are required only if you want to shoot very-high resolutions videos like 3.5K or 4K continuously, which is working pretty well.

Card spanning will alternate writes on both CF & SD to avoid write buffers saturation, meaning in the end you will get multiple chunks of video scattered on the two cards that you will have to join in post using MLVApp or MLVFS (quite transparent).

"live view" (the realtime/hardware-based one) is only available when dealing with native camera resolutions, any crop mode/anamorphic relying then over a quite slow software-based preview, which is at least properly framed in most of the case.
My specific build (with ultrafast preview) speed up things but it's not perfect (please check this video:

) and far from hardware-based achievements like in Bilal's crop mood build for EOS-M.

3. overclock is very reliable if compatible, I'm living in the south of France where the summer is HOT and I never get any overheat issue on the 5D3 even when spending a whole shooting day using it with 3.5K mode, card spanning and overclock quite intensely :-)

Hope it'll help!

#68

Raw Video / Re: Monitoring ETTR (preview l...

Last post by Mehmet Kozal - April 11, 2024, 08:11:00 PM

Nice one dude. Clipping on monitor and histogram matches now.

#69

Camera Emergency Department / Re: Canon 550D bricked. I am r...

Last post by kitor - April 11, 2024, 07:42:26 PM

I bought a new motherboard from Aliexpress, installed it and nothing happened. I am going to keep buying parts untill i will changed everything.

Honestly, that was not the wise idea. Probably you paid more for that board that camera is worth itself.
I'd look for a faulty shutter unit and then... just swap parts until it works.

#70

Camera Emergency Department / Re: Canon 550D bricked. I am r...

Last post by Rocke4 - April 11, 2024, 07:19:01 PM

I recommend to join our Discord (link above) for further instructions.
There you should create a thread for your issue in "Magic Lantern Community" -> "unbricking-and-diagnosis".

I will do it, thank you!