Micro SD Cards

Kami07 · February 06, 2024, 06:21:48 PM

So I recently bought a Canon T4i to pursue photography as a hobby. I did some due diligence on the camera and was blown away when I heard about ML. The thing is, I wasn't sure if I could use ML with microSD cards to shoot raw video or even to run ML on the camera.

I have two Sandisk micro SD cards with SanDisk MicroSD to SD Memory Card Adapters that I got for cheap a couple years ago.

The SanDisk 64GB Extreme Plus microSDXC UHS-I/U3 A2 Memory Card with Adapter, (Up to 200MB/s read and 90MB/s write speeds apparently)

The SanDisk 128GB Ultra PLUS 128GB microSDXC UHS-I Memory Card with Adapter (Up to 150MB/s read and an unknown write speed. Apparently.)

The SanDisk 128GB Extreme PLUS 128GB MicroSDXC UHS-I Memory Card (not the one I have) apparently has up to 200MB/s read and 90MB/s write speeds like the 64GB that I have and is $2 more than the "Ultra PLUS" version I have, at Best Buy.

I have no concept of what good read or write speeds are. I've read a few posts on different forums but I can't make anything out of it. Some cards apparently are too fast and others aren't fast enough.

I downloaded the ML nightly build for the 650D on the 64GB microSD and when I had difficulty changing the setting to shoot in 4k, I downloaded the "crop mood" version, which actually had a video on a build to shoot raw, on the 128GB microSD. The 128GB is what I have been trying to shoot on.

The videos are 1-2 seconds, blurry and very slow. It's so bad, I'm afraid it could mess up my card or camera. I'm not sure if it's the memory card or if I did something wrong in the settings but seeing all these beautiful videos here and on Youtube, I'd like to start shooting in 4k-6k myself instead of just taking photos.

Any help in this regard is greatly appreciated.

a.sintes · February 06, 2024, 07:41:28 PM

Not a specialist but I assume microSD is perfectly fine using a SD adapter.

For the "real" write speed of the different cards, please refer to this chart, showing what's really possible when the card is compatible with 240MHz overclocking (available with Bilal's "Crop Mood" Magic Lantern specific build) and it's activated.

Anyway I don't know if it's part of the 650D capabilities nor if it's really possible to shoot 4K with it... as far as I know, only the 5D3 is really capable to shoot (continuous) 4K at a decent framerate, mainly thanks to SD overclock and CF+SD card spanning capabilities.

Frank7D · February 06, 2024, 08:44:14 PM

Did you turn on the sd card overclocking?

Frank7D · February 06, 2024, 08:57:14 PM

The sd overclocking is discussed here: https://www.magiclantern.fm/forum/index.php?topic=25841.0

Kami07 · February 06, 2024, 09:51:17 PM

Quote from: a.sintes on February 06, 2024, 07:41:28 PM
Not a specialist but I assume microSD is perfectly fine using a SD adapter.

For the "real" write speed of the different cards, please refer to this chart, showing what's really possible when the card is compatible with 240MHz overclocking (available with Bilal's "Crop Mood" Magic Lantern specific build) and it's activated.

Anyway I don't know if it's part of the 650D capabilities nor if it's really possible to shoot 4K with it... as far as I know, only the 5D3 is really capable to shoot (continuous) 4K at a decent framerate, mainly thanks to SD overclock and CF+SD card spanning capabilities.

Thanks a lot. I don't think I see my microSD cards on that list. I did watch the video you mentioned and set SD overclocking to 240MHz. I've since lowered it to 160MHz and tinkered with some of the movie settings and I'm able to shoot for at least 1min when everything is lowered. I haven't tried keeping the lowered settings while changing back to 240MHz but I probably should.

Based on the videos I've seen and what some have said on the forum, it seems that even 6k is possible, although I haven't seen any clips/scenes longer than a min. It's all too technical for me right now but I'll learn. I just learned about the exposure triangle less than 2 months ago so I have a long way to go.

Kami07 · February 06, 2024, 10:00:53 PM

Quote from: Frank7D on February 06, 2024, 08:57:14 PM
The sd overclocking is discussed here: https://www.magiclantern.fm/forum/index.php?topic=25841.0

Thanks. Yes I did. It seems as though it might be my card, maybe coupled with some other factors as well. It'd be helpful if there were comprehensive videos on this. I see so many videos of people shooting in raw but very little, if any, true videos explaining the process and their build. Almost like everyone's keeping the info to themselves. It's quite odd. Maybe they don't fully understand it enough to explain it.

I think this is ground breaking software and a great community that would grow substantially with a lot of money behind it if there were tutorials and lesson videos for curious beginners.

Frank7D · February 06, 2024, 10:09:29 PM

Two things to try (if you haven't already):
1) Run benchmark test for the card (as discussed in the sd overclocking thread).
2) Try both Access Modes, SDR50 and SDR104. One of my cards writes faster with SDR104, and the other one with SDR50. You change it by highlighting SD Overclock and pressing Q.

Kami07 · February 06, 2024, 10:55:42 PM

Quote from: Frank7D on February 06, 2024, 10:09:29 PM
Two things to try (if you haven't already):
1) Run benchmark test for the card (as discussed in the sd overclocking thread).
2) Try both Access Modes, SDR50 and SDR104. One of my cards writes faster with SDR104, and the other one with SDR50. You change it by highlighting SD Overclock and pressing Q.

Thanks so much. I'll try that.

bobolee · March 07, 2024, 10:55:06 AM

micro sd vs sd card，micro sd is not as stable as sd card，real shooting experience

names_are_hard · March 07, 2024, 02:52:24 PM

Micro SD vs SD card, both are the same. Real shooting experience.

There is no way for us to replicate what you are seeing because you don't give any information, so it's not useful to anyone. If you list what cards you use, in what conditions, people could check.

Wannabe · March 16, 2024, 04:44:14 AM

I use an older model Sandisk Extreme PRO microSD card with an adapter. My microSD is overclocked to 240MHz.
It does the same results on the benchmarks as the regular size SD cards that I have seen other people use.
In my personal experience, Magic Lantern Crop Mood works great with microSD, as long as it is a Sandisk Extreme PRO.

gabriielangel · March 20, 2024, 08:31:54 PM

Quote from: names_are_hard on March 07, 2024, 02:52:24 PMMicro SD vs SD card, both are the same. Real shooting experience.

There is no way for us to replicate what you are seeing because you don't give any information, so it's not useful to anyone. If you list what cards you use, in what conditions, people could check.

What happens with microSD cards is that not every SD adapter is created equal.
For example, the white samsung adapters make it easy to remove the microSD card, so it ends up moving a little sometimes and you get a faulty contact. With Lexar and some Sandisk, it is so tight that it is hard to remove the card from the adapter.
Usually, just removing the microSD card from the adapter and pushing it back in properly solves all problems.

bobolee · April 04, 2024, 11:13:53 AM

Both cards are technically the same thing ,but the manufacturers know that professional users will choose the more stable SD version,thus ,same SanDisk extreme pro ,they made SD version 2 times the price of micro SD version.I have recorded so much videos with both cards,do had some contact issue with micro sd,but none for sd version.

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Micro SD Cards