Author Topic: Canon 70D  (Read 1914547 times)

Walter Schulz

  • Contributor
  • Hero Member
  • *****
  • Posts: 7901
Re: Canon 70D
« Reply #3400 on: March 01, 2021, 08:14:56 PM »
1: No. 1680x1080, 60 fps interlaced.
2: U3 is a pretty useless designation. 30 MByte/s isn't sufficient to reach cam's vanilla SD-card interface limit without overclocking: Around 43 MByte/s read, 40-ish write. Something like Sandisk Extreme Pro in the 170/160 MByte/s (as labeled) has given most consistent results with and without overclocking.
3: Nothing to write home about.
4: If you want to go after highest resolution in raw/MLV recording:https://www.magiclantern.fm/forum/index.php?topic=25786.msg234507#msg234507
Read first post (at least) of this thread.

ArcziPL

  • Contributor
  • Member
  • *****
  • Posts: 178
Re: Canon 70D
« Reply #3401 on: March 02, 2021, 12:30:31 AM »
I would like to know if it is already possible to record full hd or near full hd continuous raw. I saw that it has 10/12/14 bit but stopped at maximum 20 seconds even using U3 card.
Use Sandisk Extreme PRO 170MB/s card and enable sd_uhs module, then set overclocking to 192 or 240MHz in the Debug tab. It will improve the write speeds.
4 - Which firmware should I use?
Canon firmware v1.1.2 and I believe this ML version: https://www.magiclantern.fm/forum/index.php?topic=25786.msg213074#msg213074
M50.110 [main cam] | G7X III [pocket cam] | 70D.112 [gathers dust] | M.202 [gathers dust] | waiting for M5II

EphimAO

  • New to the forum
  • *
  • Posts: 17
Re: Canon 70D
« Reply #3402 on: March 02, 2021, 11:13:41 AM »
Hi guys! I have a question about continuous raw recording. If my card is fast enough, will I be able to record video for a long time? Or image buffer will die?

Walter Schulz

  • Contributor
  • Hero Member
  • *****
  • Posts: 7901
Re: Canon 70D
« Reply #3403 on: March 02, 2021, 11:25:49 AM »
?
If buffer overrun occurs buffer overrun occurs.
It will occur if data input data rate is higher than output data rate.
And data output rate may be limited by cam's interface limit or card write rate.

Your question is like "Will a rope break?"

If you use data rate below any limiting bottleneck in transfer chain you will get unlimited raw recording durations. (Disclaimer: Card size, battery, overheating).

EphimAO

  • New to the forum
  • *
  • Posts: 17
Re: Canon 70D
« Reply #3404 on: March 02, 2021, 11:29:11 AM »
thx for reply. So if card is fast enough, recording time is big?

Walter Schulz

  • Contributor
  • Hero Member
  • *****
  • Posts: 7901
Re: Canon 70D
« Reply #3405 on: March 02, 2021, 11:31:29 AM »
thx for reply. So if card is fast enough, recording time is big?

No
Yes
Maybe

Question makes no sense without resolution/data rate in mind. So answer is volatile.

You can record unlimited 540p25 with any card doing 25 MByte/s. You can't run 4k30 in 14 bit uncompressed RAW with any card in the world for longer than a few seconds.

EphimAO

  • New to the forum
  • *
  • Posts: 17
Re: Canon 70D
« Reply #3406 on: March 02, 2021, 11:37:28 AM »
Resolution: 1824x1026
The speed of the card I want to buy: read 300mb/s, write 260mb/s

Walter Schulz

  • Contributor
  • Hero Member
  • *****
  • Posts: 7901
Re: Canon 70D
« Reply #3407 on: March 02, 2021, 11:44:18 AM »
These speeds are for UHS-II cards in UHS-II compatible devices. Your camera does not have an UHS-II interface. It runs UHS-I.
UHS-II cards in UHS-I devices run in UHS-I compatibility mode. They will *not* be faster than fastest UHS-I cards.
We have limited experience with UHS-II cards with ML overclocking. You are best adviced to get a Sandisk Extreme Pro 170 MB/s.

1824x1026 x 14 x 25 fps / 8 = 78 MiByte/s -> I suppose it will not do for unlimited recording.
You will have to use bit depth < 14 bit and/or compression mode.

EphimAO

  • New to the forum
  • *
  • Posts: 17
Re: Canon 70D
« Reply #3408 on: March 02, 2021, 11:45:35 AM »
thanks

EphimAO

  • New to the forum
  • *
  • Posts: 17
Re: Canon 70D
« Reply #3409 on: March 02, 2021, 01:45:28 PM »

yokashin

  • Member
  • ***
  • Posts: 112
Re: Canon 70D
« Reply #3410 on: March 02, 2021, 02:05:48 PM »
Yes. It's this model.
For 128 gb, it holds about 40 minutes of lossless compressed 1080p, 14 bit, 24p material.
70D.112 [main cam] | M.202 [for special occasions cam] | S110 [experimental cam powered by CHDK]

dnhstv

  • Just arrived
  • *
  • Posts: 1
Re: Canon 70D
« Reply #3411 on: March 02, 2021, 02:21:40 PM »
The Canon 70D has a 30min limit for live view.  Does ML allow to override this limit and have live view through hdmi stay on for longer?

EphimAO

  • New to the forum
  • *
  • Posts: 17
Re: Canon 70D
« Reply #3412 on: March 02, 2021, 03:02:22 PM »
thank you very much

paci

  • New to the forum
  • *
  • Posts: 4
  • EOS 70D
Re: Canon 70D
« Reply #3413 on: March 02, 2021, 04:33:13 PM »
Hello, Are Canon firmware v1.1.3 and ML supported? if not, why?

Walter Schulz

  • Contributor
  • Hero Member
  • *****
  • Posts: 7901
Re: Canon 70D
« Reply #3414 on: March 02, 2021, 04:37:04 PM »
No. Because *you* let us down by not programming it.
Longer answer: https://twitter.com/autoexec_bin/status/1332401580449165314

EphimAO

  • New to the forum
  • *
  • Posts: 17
Re: Canon 70D
« Reply #3415 on: March 02, 2021, 04:38:57 PM »
Hello, Are Canon firmware v1.1.3 and ML supported? if not, why?
you can make downgrade of your firmware to 1.1.2

paci

  • New to the forum
  • *
  • Posts: 4
  • EOS 70D
Re: Canon 70D
« Reply #3416 on: March 02, 2021, 04:44:15 PM »
Thank you  :)

hdslr

  • New to the forum
  • *
  • Posts: 2
Re: Canon 70D
« Reply #3417 on: March 03, 2021, 02:11:54 AM »
Thank you

1: No. 1680x1080, 60 fps interlaced.
2: U3 is a pretty useless designation. 30 MByte/s isn't sufficient to reach cam's vanilla SD-card interface limit without overclocking: Around 43 MByte/s read, 40-ish write. Something like Sandisk Extreme Pro in the 170/160 MByte/s (as labeled) has given most consistent results with and without overclocking.
3: Nothing to write home about.
4: If you want to go after highest resolution in raw/MLV recording:https://www.magiclantern.fm/forum/index.php?topic=25786.msg234507#msg234507
Read first post (at least) of this thread.

vicenzzopaiva

  • New to the forum
  • *
  • Posts: 11
Re: Canon 70D
« Reply #3418 on: March 03, 2021, 04:25:13 PM »
Some things about cards and the 70D build:

I have one 70D and one EOS M right now, if developers want to test anything specially with the 70D (danne is doing some AWESOME work updating the EOS M already), count with me.

About the cards: The fastest i’ve been able to get on the 70D was about 70mb/s with an Adata v90 128Gb UHS-II with fixed overclock on 160Mhz:


https://imgur.com/a/h5IjZtw

Even the Extreme Pro reaches just about that  on the 70D, while it reaches around 85mb/s with the EOS M.
-----
Something i just thought: in ML since we have the info on focal distance used, aperture, depth of field and others, do we have the info on the rotation of the STM (or FTM USM) ring? If yes, would it be possible to use that info to replicate the RF control ring (change ISO, WB, etc)?
EOS M - 2.0.2 - Danne's feb21 build
70D    - 1.1.2 - ArcziPL’s mar19 build