Quote from: Walter Schulz on July 22, 2020, 08:14:56 AM
See heder's reply #542
Which are - generally speaking - crap.
Most likely performance is far from modern standards. Should not be a concern with 40D which is - according to heder's experiments - limited to around 20 MByte/s bandwidth.
A more serious problem exists supporting boot from card. Some adapters are not able to act like bootable CF-cards, rendering them pretty useless for Magic Lantern.
You may want to test this with an ML-supported cam hosting CF slot (7D, 5D2, 5D3).
According to Kingston this card should do 45 MByte/s in write mode.
Take a decent cardreader with CF slot ( www.cameramemoryspeed.com -> Reviews -> Card readers) and do some benchmark runs with tools like CrystalDiskMark (Windows) or Blackmagic Disk Speed Test (macOS).
20 MByte/s translates to around 720p25 for raw/MLV using lossless compression.
I have actually been able to use the magic lantern beta build for the 40d with the cf card adapter. I don't really know how to benchmark the actual read write speeds from the camera, but I definetly am able to use the card with no real issues to speak of yet. Thanks by the way about the timeline on video support. I guess thats where things still stand; I was wondering if I missed something.
I am very thankful to all for the support on this old camera haha. I was able to use "EOS camera movie record" to livestream to my laptop and record video that way, but the framerate is still quite choppy so it will be interesting to see what can be done once I can actually record directly to the CF slot. I suppose just recording the audio with my cellphone this could actually be a really nice solution for video if I can figure it out. I picked up a vintage f1.2 50mm lens and have been impressed with the quality so far. Sure beats recording with anything else I own. : )