topic Re: Canon 70d freezes up after taking pictures for a while in EOS DSLR & Mirrorless Cameras

Canon 70d freezes up after taking pictures for a while

scjohnson — Thu, 27 Aug 2015 14:49:49 GMT

I have a rebel t31 and it was freezing up often after taking pictures. I upgraded to a 70D and I still have the same problem. I am guessing that means I am doing something to create this to happen?! Any suggestions? I have tried new batteries, and that made no difference.

Re: Canon 70d freezes up after taking pictures for a while

TTMartin — Thu, 27 Aug 2015 15:07:05 GMT

Are you taking exposures longer than 1 second and have long exposure noise reduction set to ON or Auto?

Long Exposures: Capturing the Passage of Time

Long Exposure Noise Reduction can be set to Enable, Disable, or Auto. In the Auto mode, the camera will determine whether or not it's necessary for exposures of one second or longer. When set to Enable, the camera automatically applies Long Exposure Noise Reduction to all exposures longer than 1 second. (Please note that at shutter speeds faster than 1 second, Long Exposure Noise Reduction is ignored, and has no effect – thus, it can be left "enabled" all the time if you like, and it only is applied in actual long-exposure situations.)

Long Exposure Noise Reduction works quite a bit differently than High ISO Noise Reduction, as there really is no loss of detail. There is one sacrifice however: your camera will be unable to make another exposure until the Long Exposure Noise Reduction has finished. The time that takes is exactly as long as the exposure it was reducing the noise for. So, if you make a 30 second exposure, Long Exposure Noise Reduction will take another 30 seconds of processing time, during which time you will be unable to take another photo with your camera.

What's happening is this: your camera makes its exposure for the image. Long Exposure Noise Reduction then kicks in, and charges the camera's imaging sensor for the same amount of time, making a "dark frame." The camera then compares the noise in the dark frame with the noise generated in the image, and removes any noise that is the same. This method is known as dark frame subtraction.

Re: Canon 70d freezes up after taking pictures for a while

scjohnson — Thu, 27 Aug 2015 16:16:55 GMT

The long exposure noise reduction was actually set to off. It was the default setting and I haven't ever changed that.

Re: Canon 70d freezes up after taking pictures for a while

jrhoffman75 — Thu, 27 Aug 2015 17:53:19 GMT

Exactly what are you doing and in which mode?

Re: Canon 70d freezes up after taking pictures for a while

TTMartin — Thu, 27 Aug 2015 18:50:59 GMT

Are you using the same memory card?

Re: Canon 70d freezes up after taking pictures for a while

ScottyP — Fri, 28 Aug 2015 00:15:14 GMT

How long does it freeze up? Are you shooting in bursts? If shooting bursts, you will quickly fill up the camera's buffer and it will stop shooting until it catches up. It feels like a long time but really it is only a matter of seconds.

Re: Canon 70d freezes up after taking pictures for a while

TTMartin — Fri, 28 Aug 2015 00:27:30 GMT

@ScottyP wrote:
How long does it freeze up? Are you shooting in bursts? If shooting bursts, you will quickly fill up the camera's buffer and it will stop shooting until it catches up. It feels like a long time but really it is only a matter of seconds.

And if the OP is using a bad or slow SD card it can take a long time for the buffer to clear.

Re: Canon 70d freezes up after taking pictures for a while

scjohnson — Fri, 28 Aug 2015 04:25:14 GMT

I do often shoot in bursts. It freezes up for long enough that I need to turn the camera off for it to work again. Then it will only take 1 picture at a time. I then have to shut it off b/t each picture until I am done taking pics. Maybe I will try to not do bursts? And not sure about the SD card speed, will check that out. I was using a brand new one when this all last happen, though.
Thanks for your input!

Re: Canon 70d freezes up after taking pictures for a while

scjohnson — Fri, 28 Aug 2015 04:28:34 GMT

I usually shoot in av or tv mode - doing photos of children and babies usually.
I helped at a wedding 2 weekends ago and it froze up then, too.

Re: Canon 70d freezes up after taking pictures for a while

jrhoffman75 — Fri, 28 Aug 2015 10:43:32 GMT

If its simply an issue of burst shooting and filling up the buffer ther is no reason to turn camera off. Just wait until the buffer clears. There is a number at the botttom of the viewfinder just to the left of the green focus confirmation dot. That represents how many burst shots you can take.

Use a fast SD card - one with a 10 in a circle on it.

https://www.sdcard.org/developers/overview/speed_class/

http://media.the-digital-picture.com/Sounds/Canon-EOS-70D-Burst.mp3

Re: Canon 70d freezes up after taking pictures for a while

scjohnson — Mon, 31 Aug 2015 23:30:50 GMT

I will look at and try your suggestions. Thanks!! 🙂

Re: Canon 70d freezes up after taking pictures for a while

Sovereign144 — Wed, 16 Dec 2015 10:52:05 GMT

I have the same problem after using the camera 1 1/2 years with no problem, but no way to switch it on again. I was taking a picture in AV mode and raised the ISO as the exposure was too long and after taking the photo, which was ok, at 0.8 sec. f3.5 with the 50mm lens. Where is the problem????

Thanks for any inspiring suggestions!

Sieghilde