Author Topic: Canon EOS M  (Read 471822 times)

igrease

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Re: Canon EOS M
« Reply #1275 on: August 29, 2017, 06:54:08 AM »
I am having an issue with ML and my 18-55mm KIT lens. For whatever reason my 18-55mm Kit Lens refuses to take photos with pretty much any version of ML. So far the only version that seemed to work with the lens was the August 1st version. However that only worked until I switched off the kit lens for my vintage 55m 1.4 lens. Once I put the kit lens back on it no longer works. It will focus, and record video but the aperture won't change and will not take a photo. I have tried changing the different modes and everything. Nothing seems to work. The main reason I want to use ML is for the forced Exposure Simulation so I can see exactly how the shot is going to look like through the live-view. It bothers me to no end when I take a photo and the screen is darker or lighter than the actual picture taken. I don't think the default Canon EOS M settings have that feature.

Any advice?

Walter Schulz

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Re: Canon EOS M
« Reply #1276 on: August 29, 2017, 08:06:13 AM »
Welcome to the dreaded "EOS M Shutter Bug": https://bitbucket.org/hudson/magic-lantern/issues/1893/eos-m-shutter-bug
Workaround for you and your August 1st version: Remove battery before mounting kit lens again.

dfort

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Re: Canon EOS M
« Reply #1277 on: August 29, 2017, 01:52:20 PM »
Ah yes, the shutter-bug. A few weeks ago I thought that maybe if we can come up with a different way of booting up the camera, like the AllocateMemory pool method, it would solve this issue. Sadly it didn't resolve the shutter-bug. The best work around I have found is to use a SanDisk Extreme PRO card that is 32GB or less.



Anything over 32GB (SDXC cards) will most likely exhibit the bug. Other cards 32GB or less may work, some intermittently. Note that it doesn't have to do with the speed of the card because I've got an old and very slow Kodak 1GB card that works fine.

The shutter-bug is only present with EF-M zoom lenses. A quick, though annoying, "fix" is to break the lens/body by twisting the lens off and on while the camera is turned on. This kills the shutter-bug until the next time you restart the camera. There are other work arounds but if you use this card you'll never have to deal with it.
EOSM.202 EOSM.203 EOSM2.103 700D.115 5D3.*

igrease

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Re: Canon EOS M
« Reply #1278 on: August 29, 2017, 07:32:15 PM »
Ah yes, the shutter-bug. A few weeks ago I thought that maybe if we can come up with a different way of booting up the camera, like the AllocateMemory pool method, it would solve this issue. Sadly it didn't resolve the shutter-bug. The best work around I have found is to use a SanDisk Extreme PRO card that is 32GB or less.



Anything over 32GB (SDXC cards) will most likely exhibit the bug. Other cards 32GB or less may work, some intermittently. Note that it doesn't have to do with the speed of the card because I've got an old and very slow Kodak 1GB card that works fine.

The shutter-bug is only present with EF-M zoom lenses. A quick, though annoying, "fix" is to break the lens/body by twisting the lens off and on while the camera is turned on. This kills the shutter-bug until the next time you restart the camera. There are other work arounds but if you use this card you'll never have to deal with it.

Welcome to the dreaded "EOS M Shutter Bug": https://bitbucket.org/hudson/magic-lantern/issues/1893/eos-m-shutter-bug
Workaround for you and your August 1st version: Remove battery before mounting kit lens again.

Wow thank you. I have always been turning the camera off before I switched lens and that is why I kept getting the shutter-bug. If I do it with the camera still on it switches fine. And yes taking the battery in and out fixed it as well.

I just have a Lexar Platinum ll 32GB 300x 40MB/s. Is there any benefit to having a faster SD card with this camera?

Walter Schulz

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Re: Canon EOS M
« Reply #1279 on: August 29, 2017, 08:52:40 PM »
I just have a Lexar Platinum ll 32GB 300x 40MB/s. Is there any benefit to having a faster SD card with this camera?

I believe it does. Test for yourself. Go to Modules tab and enable Bench.mo. Disable all others. After restart in photo mode go to Debug tab -> Benchmarks -> Card Benchmarks -> Quick R/W benchmark (1 min). Would be surprised to see write speeds above 20 MByte/s with this card. Cam can do about 40 MByte/s.