Author Topic: Corona Days - 4k Anamorphic - 700d  (Read 538 times)

SubZeroz

  • New to the forum
  • *
  • Posts: 5
Corona Days - 4k Anamorphic - 700d
« on: September 15, 2020, 08:21:31 PM »
Hi,

I've made a short "Corona Days" film/clip.

Hopefully this will provide some optimism.


TheMintHippo

  • New to the forum
  • *
  • Posts: 8
Re: Corona Days - 4k Anamorphic - 700d
« Reply #1 on: September 16, 2020, 07:34:33 PM »
I'm assuming this is the 4k lossless compression build? I would consider getting a cheap 650 or 700d over the M just for the flip screen (I currently have a 600d). Would you recommend the camera and build? Is it true theres no real time liveview while recording in those modes?
T3i - ML 10/12 Bit RAW Experimental Build

SubZeroz

  • New to the forum
  • *
  • Posts: 5
Re: Corona Days - 4k Anamorphic - 700d
« Reply #2 on: September 16, 2020, 08:50:25 PM »
Before using Magic Lantern, I've mode a long long research..... I'll post what I know here, but please verify before counting on it :-).


1. I'm not using the 4k experimental build. That build has 4K, but not for the 700D. Also, in order to use larger resolutions you will have to use the 'Crop' Mode, which I like less. Mainly because I'm using the 18-135 lens, and I cannot get the effect of the lower range.

The build I'm using is a bleeding edge build, that as far as I know only 700D and EOS-M are currently supported for.
Link to post:
https://www.magiclantern.fm/forum/index.php?topic=5951.msg214395#msg214395

Link to download (700d):
https://web.archive.org/web/20200717085052/https://bitbucket.org/Dannephoto/magic-lantern/downloads/crop_rec_4k_mlv_snd_isogain_1x3_presets_2019Apr02.700D115.zip


In this build, I can use the 1x3 mode. It's not so easy to explain, and I hope I understand it correctly - but when recording video, the 700d (and many other non-high-end-camears), are skipping some of the pixels of the sensor (Thats why you can get high res photos, but only 1080p video). That might cause Aliasing and Moire.
The Bleeding edge 1x3 mode allows you to record ALL line-pixels, which means no aliasing or moire. Also, the mode allows you to record at a higher resolution than possible in other modes.
But the higher resolution is not exacctly "normal". Because you're getting more line pixels, the image is going to look squeezed, so you have to scretch it later on in an editing software.
So my final output is upscaled 4K, BUT, all my line-pixels-data was not scaled because I had more of them.

I hope it makes some sense. If not, I can try to explain it again (or you can just search the forum...)

In this mode you cant see exactly what you're filming, because it's scretched. but you can click "info" a few times and see what you are actually filming (but in a lower fps).
you can still work with it, you just need some practice, but its not the best...


2. I like the 700d, but there are some limitation that you must know:

2.1 The maximum sd speed, even with the UHS module is only at about 50MB/s, so you wont be able to record at the rates EOS-M can
2.2 The autofocus is annoying, and I mostly work with manual focus. And its even harder with the small screen/scretched image.
2.3 The screen is not that big...

3. If it's for the screen alone I'm not sure if you should upgrade/buy the 700d, because you can use ZEEK trick (Which is really cool, but I didnt try it yet), and mount your phone.
You will get a bigger screen, and you can probably tilt it.


TheMintHippo

  • New to the forum
  • *
  • Posts: 8
Re: Corona Days - 4k Anamorphic - 700d
« Reply #3 on: September 17, 2020, 12:24:17 AM »
Thanks for the all details on that build and workflow, I really appreciate it to help weigh my options. I also spend a lot of time looking through old threads researching. The battle for the flipscreen is a personal one, though all of Zeeks videos make a really strong case for the M. 50mbs is more than double what I currently get so even thats a plus since my focus is on 1080. Cutting down or eliminating aliasing would be awesome though.

Truthfully I am not even interested or need 4k and beyond resolutions, but from what I have heard and possibly have had happen to me, youtube is crippling compression quality on uploads under 4k. If any of thats true I would be interested in the possibility of delivering in 4k, but thats maybe a post for a different thread.
T3i - ML 10/12 Bit RAW Experimental Build

theBilalFakhouri

  • Contributor
  • Senior
  • *****
  • Posts: 499
Re: Corona Days - 4k Anamorphic - 700d
« Reply #4 on: September 17, 2020, 12:52:15 AM »
In this mode you cant see exactly what you're filming, because it's scretched. but you can click "info" a few times and see what you are actually filming (but in a lower fps).
you can still work with it, you just need some practice, but its not the best...

Well, now you can see what exactly what you're filming in 1x3 Mode using the New Correct (Un-Stretched) Preview:
https://www.magiclantern.fm/forum/index.php?topic=25323.msg230933;topicseen#msg230933

2.1 The maximum sd speed, even with the UHS module is only at about 50MB/s, so you wont be able to record at the rates EOS-M can

Maximum speed on 700D is 68 MB/S if you used this sd_uhs from this post ;D
700D 1.1.5 | no more ISOless LV err 8 / SDR104 @ 240 MHz - Constant! | Fixed Scrambled LiveView in Higher resolution | Real-Time correct framing in the Way

SubZeroz

  • New to the forum
  • *
  • Posts: 5
Re: Corona Days - 4k Anamorphic - 700d
« Reply #5 on: September 17, 2020, 06:27:02 AM »
Well, now you can see what exactly what you're filming in 1x3 Mode using the New Correct (Un-Stretched) Preview:
https://www.magiclantern.fm/forum/index.php?topic=25323.msg230933;topicseen#msg230933

Maximum speed on 700D is 68 MB/S if you used this sd_uhs from this post ;D

Wow, cool, I see it's from yesterday, great timing :-)
is the un-scretch version exactly as
https://www.magiclantern.fm/forum/index.php?topic=5951.msg214395#msg214395
with only un-scretching, or are there additional differences aswell?

Also, I'm not sure I 100% understand - Do I have to use the 5x crop mode? Because I prefer not going into crop.

The sd-uhs imporvement is also very interesting

theBilalFakhouri

  • Contributor
  • Senior
  • *****
  • Posts: 499
Re: Corona Days - 4k Anamorphic - 700d
« Reply #6 on: September 17, 2020, 09:11:57 AM »
Wow, cool, I see it's from yesterday, great timing :-)
is the un-scretch version exactly as
https://www.magiclantern.fm/forum/index.php?topic=5951.msg214395#msg214395
with only un-scretching, or are there additional differences aswell?
Unfortunately, each build have different presets, I am working on new 700D build which have the latest developments also with all presets in one build, it may take some days to make it . .

Also, I'm not sure I 100% understand - Do I have to use the 5x crop mode? Because I prefer not going into crop.
You should enable the preset in x5 Mode, then when you enable the preset we are patching x5 mode back to 1x3 Mode, the result would be like normal 1x3 Anamorphic Mode without cropping, we are using x5 mode only to achieve the real-time correct preview.
700D 1.1.5 | no more ISOless LV err 8 / SDR104 @ 240 MHz - Constant! | Fixed Scrambled LiveView in Higher resolution | Real-Time correct framing in the Way

SubZeroz

  • New to the forum
  • *
  • Posts: 5
Re: Corona Days - 4k Anamorphic - 700d
« Reply #7 on: September 17, 2020, 07:50:28 PM »
Unfortunately, each build have different presets, I am working on new 700D build which have the latest developments also with all presets in one build, it may take some days to make it . .
You should enable the preset in x5 Mode, then when you enable the preset we are patching x5 mode back to 1x3 Mode, the result would be like normal 1x3 Anamorphic Mode without cropping, we are using x5 mode only to achieve the real-time correct preview.

I don't need all presets... only the 1:3 one.

Is the sd_uhs module in that liveview build is the regular one, or the one with the 68 MB/s?

Anyway, I'm going to download it and test it, thanks! :-)


theBilalFakhouri

  • Contributor
  • Senior
  • *****
  • Posts: 499
Re: Corona Days - 4k Anamorphic - 700d
« Reply #8 on: September 18, 2020, 07:56:47 PM »
You're welcome, the new build for 700D is out:
https://www.magiclantern.fm/forum/index.php?topic=5951.msg231049#msg231049

You will find everything you will need there ;D
700D 1.1.5 | no more ISOless LV err 8 / SDR104 @ 240 MHz - Constant! | Fixed Scrambled LiveView in Higher resolution | Real-Time correct framing in the Way