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Messages - Rythmtech

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General Help Q&A / Re: FPS override feature on 500D
« on: June 11, 2017, 07:13:51 AM »
... with fps override set to 3, in day light, I still get overexposure on screen while recording, as well as in the recorded video, is there some settings to be tweaked ??

Hi mohanurs,
Did you ever work this out? I've recently been trying out FPS Overide and I'm having similar problems using a 650D.


Camera-specific Development / Re: Canon 650D / T4i
« on: May 13, 2017, 03:12:17 AM »
Hi, everyone!  Where is the module in this firmware??? Where I can download this module?

Just a quick google search away....Quote from

"this module does not add AFMA support to camera bodies that did not contain this feature in Canon firmware."

Hardware and Accessories / Re: Compiled list of card speeds
« on: March 03, 2016, 12:13:55 AM »
Just for reference, I completed this benchmark on a 650D some time ago...

Camera-specific Development / Re: Canon 650D / T4i
« on: October 03, 2015, 02:35:09 AM »
Just for reference...this is the results for this card.

Any chance of getting the latest Silent Full-Res version built for 650D?

...and I'm getting a message that the 'Help" files weren't loaded.  Did I do something wrong?

You can copy the doc files across from the stable 2.3 build. Just be aware that they are rather dated and some newer features are not yet documented.

Unable to compile myself unfortunately (hmmm ...that sounds all wrong but anyway), anyone able to build a "full res silent pictures" version for the 650D?  Cheers.

I tried the link and it asked me to 'select your platform' and the lettering went red and nothing else happened.

I have the same problem using Firefox browser, but if I use IE (or IE-Tab add-on in FF), it works ok.... but having said that, I also use FF on my computer at the office (same as home with Windows7) but it works ok there ... Go figure. :-\

Yes, exactly like that...

Thanks, i'll give it a go.

Gave it a go and not sure if there is a change as when I turned the camera on it was down to two bars, but then I tried to focus the camera (half shutter press) and it immediately went to one bar and started flashing...

It looks that there is still a drain on the battery happening, but not sure if this autoexec.bin may have slowed it down a bit.

Also, just for any other doubters out there...;topicseen#msg119827

Is this the test result for the above procedure? (you started the camera while pressing SET, it printed "Magic OFF", then you turned it off, and the battery got drained, right?)

Yes, exactly like that...

If so, the next test is with this: autoexec.bin.

Thanks, i'll give it a go.

Sorry to say that the status quo remains.... Battery is flat once again.

Any other suggestions I could try? .... Cheers.

You want to check whether it shuts down cleanly.

Now that makes sense. Thanks. I've just put a fresh battery in and restart as suggested... I'll see how it goes in a few days.

Thanks Alex, but I'm not sure I understand how that helps to diagnose a problem that occurs with the camera turned off.(?)

No hard data -> Not reproduceable -> Speculations -> Back to line one.

No hard data....fair enough ... but read on McDuff->
Not reproduceable -> I can reproduce it as many times as you like.
Speculations -> I'm not speculating what I can plainly see.

Having said that, I've been testing a bit more over the last week or so....

Step 1: Replace SD card in camera with M/L with another blank card and reformat.

Step 2:  I have two batteries B1 & B2.  I charged both and put B1 in the camera and left it for 3 days, came back and B1 in the camera was dead and B2 was still full.

Step 3: I fully charged them both again (just to be sure I gave B2 a top up.) and then put B2 in the camera and kept B1 out. Again left for approx 3 days and B2 in the camera was dead and B1 which was left out was still full.

Therefore, there HAS TO BE something INSIDE the camera that is draining my batteries.

I can only think of two things that it could be...
1) the M/L firmware update that enabled the "boot from card" is still running something even with the camera switch turned off,
2). there is a general fault in the camera.

I think next step is to remove the firmware update… but I haven’t looked into that yet.

If anyone can guide me on the process, I’m all ears. Cheers.


Since it's not really very easy to connect a multimeter to measure current drain, I would suggest charging the suspect battery, use the camera with that battery inside, and see how long it takes to discharge. That should tell you if it is a battery problem.

It has me perplexed  as I've had this issue with two batteries. The original Canon one and a 3rd party one bought just recently...maybe they're both faulty???

If you (or anyone else) can measure the current drawn by the camera, can reproduce this problem (that is, the current is nonzero after turning off the camera), and confirms the problem does not exist without ML, I can troubleshoot it from there.

I assume you did not remove the card too fast after powering off.

No, I always wait for the Red light to stop flashing for a few seconds. (I learnt that the hard way!  :o)

I've just removed my card with ML on it. I'll see how that goes over the next few days. Do you think there would be anything with the boot flag being enabled that could cause this? (That would be the next step I suppose...?)


Troubleshooting for battery: turn your camera off, and back on. If it works, there should be no battery drain. If it doesn't, there will be.

Double-check with a multimeter.

Thanks Alex, but I'm not quite sure I understand what you are saying here...obviously if I turn it on the and it works the battery is ok, but what I'm saying is that it won't turn on and is completely flat, after leaving the camera switched off with a fully charged battery, in about 3-4 days and only works if I change to another charged battery.

...also, on another note...(pun intended) ;)... I seem to be having battery drain issues when the camera is not being used. Two different batteries each last about 3-4 days and then are flat. Anyone else notice this?


Build page broken? The drop-down selector on this page seems to be not working.  :-[

Camera-specific Development / Re: Canon 650D/T4i 1.0.4 [Status: Alpha]
« on: March 12, 2014, 11:07:07 AM »
"Sorry for my question, who to use Digital Zoom in the 650D? It's possible??"

Digital zoom is a waste on DSLR's and is just OK for pocket cams that don't have access to decent tele-zoom lenses. You are better off just taking your pix with your 70-300 at the tele end and crop in software....unless you are talking about "Magic-zoom" which is activated by using the +magnifying glass button  next to the thumb rest and is only zoomed in live-view for focusing purposes.

Camera-specific Development / Re: Canon 650D 1.0.4 [Status: Alpha]
« on: August 11, 2013, 12:43:33 PM »
From your post
But there is an ML alpha 2 doing trap focus without hardware tweaks. ;-)

On the bottom of the linked post above re: Trap Focus.... would love to try this out....any closer to a solution?

Love your work!


Archived porting threads / Re: Canon 650D [Status: Alpha]
« on: August 01, 2013, 01:50:17 PM »

Would be good to see a list of working /not working features for the 650D in this format.... anyone? :)

Archived porting threads / Re: Canon 650D [Status: Hello, world!]
« on: May 14, 2013, 12:50:26 PM »

I've been using the latest alpha for a while and I noticed two corrupt RAW files when taking time lapses. Here is one:

Hi Morghus,
Just d/ld your pics and they look fine to me, although one looks to be compressed and one not 5MB & 20MB resp.

What exactly is the problem?

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