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Mar 23, 2019 11:32:11   #
kerry12
 
I have been asked to make a video of a church service at one of our churches on the Navajo Reservation. Nothing professional, just to help promote our missions when we do presentations back home here. My question is, how many minutes of recording do you think I can get from a 32gb CF card. I will be using my Canon 7D. The part of the service that I will be recording will probably last about an hour. Thank you in advance for all of your help. Kerry

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Mar 23, 2019 11:34:51   #
Longshadow (a regular here)
 
Does the manual give an approximation for time vs. size?

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Mar 23, 2019 11:40:36   #
rck281
 
If the card is formatted in FAT32, the maximum file size is 4 GB. On my camera, that's about 21 minutes.

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Mar 23, 2019 11:41:09   #
PixelStan77 (a regular here)
 
kerry12 wrote:
I have been asked to make a video of a church service at one of our churches on the Navajo Reservation. Nothing professional, just to help promote our missions when we do presentations back home here. My question is, how many minutes of recording do you think I can get from a 32gb CF card. I will be using my Canon 7D. The part of the service that I will be recording will probably last about an hour. Thank you in advance for all of your help. Kerry


Kerry check the brand you are using. I am a Lexar fan.Well according to Lexar (a very good brand by the way and the times may vary by brand) HD 1080p at 32 Gig will get you about 4 hours at 15 Mbps. Does that help? You can also check your media packaging and a capacity chart may be on there, as well as your cameras owner manual.

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Mar 23, 2019 11:59:00   #
kerry12
 
Longshadow wrote:
Does the manual give an approximation for time vs. size?


Have not looked at that yet. Thanks

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Mar 23, 2019 11:59:22   #
kerry12
 
rck281 wrote:
If the card is formatted in FAT32, the maximum file size is 4 GB. On my camera, that's about 21 minutes.


Thank you

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Mar 23, 2019 12:00:33   #
kerry12
 
PixelStan77 wrote:
Kerry check the brand you are using. I am a Lexar fan.Well according to Lexar (a very good brand by the way and the times may vary by brand) HD 1080p at 32 Gig will get you about 4 hours at 15 Mbps. Does that help? You can also check your media packaging and a capacity chart may be on there, as well as your cameras owner manual.


That may help. I'll have to look at the charts. Lexar is what I'll be using. Thanks

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Mar 23, 2019 12:17:56   #
TriX (a regular here)
 
The other thing to consider is that the camera will stop (due to regulations, not technical reasons) after 29 minutes 59 sec., and you will need to restart to continue recording.

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Mar 23, 2019 12:26:51   #
larryepage (a regular here)
 
I do not have a vast accumulated experience around video, but have been playing with it a bit. I made several 1080P/60fps videos at a high school robotics meet last weekend. My experience was that 5 minute videos were about 1 GB each, which is about 12 GB per hour. These were saved as .MOV files. These videos contained a lot of detail and a lot of motion. In general, videos with more detail and more motion will require more memory.

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Mar 23, 2019 14:12:38   #
rgrenaderphoto (a regular here)
 
kerry12 wrote:
I have been asked to make a video of a church service at one of our churches on the Navajo Reservation. Nothing professional, just to help promote our missions when we do presentations back home here. My question is, how many minutes of recording do you think I can get from a 32gb CF card. I will be using my Canon 7D. The part of the service that I will be recording will probably last about an hour. Thank you in advance for all of your help. Kerry


Regardless of file size, there is a limit of 30 minutes continuous video recording on any DLSR. That is to prevent digital cameras being taxed as video recorders in the EU.

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Mar 23, 2019 15:21:58   #
kerry12
 
TriX wrote:
The other thing to consider is that the camera will stop (due to regulations, not technical reasons) after 29 minutes 59 sec., and you will need to restart to continue recording.


Thank you I did not know that.

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Mar 23, 2019 15:22:11   #
kerry12
 
rgrenaderphoto wrote:
Regardless of file size, there is a limit of 30 minutes continuous video recording on any DLSR. That is to prevent digital cameras being taxed as video recorders in the EU.


Thank you I did not know that.

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Mar 23, 2019 21:18:14   #
pmorin
 
kerry12 wrote:
That may help. I'll have to look at the charts. Lexar is what I'll be using. Thanks


This chart is for the 7DII. Sandisk makes a 32, a 64, and a 120gb chip if you want to shoot video. I buy the Extreme Pro, UDMA7, 160 MB/s chips as the write speed makes a difference if I want to take stills from the video.



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Mar 23, 2019 22:10:31   #
mwsilvers (a regular here)
 
kerry12 wrote:
I have been asked to make a video of a church service at one of our churches on the Navajo Reservation. Nothing professional, just to help promote our missions when we do presentations back home here. My question is, how many minutes of recording do you think I can get from a 32gb CF card. I will be using my Canon 7D. The part of the service that I will be recording will probably last about an hour. Thank you in advance for all of your help. Kerry

With the original 7D's 18 mp sensor you should get around 12 minutes for each 4 gig file. That would mean theoretically a maximum of 96 minutes of recorded time on a 32gb card. In the real world I wouldn't expect more than around 80 minutes or so in total. When each 4 gig file size is reached the video feature will stop and must be restarted. You will also need video software to put the separate 4 gig clips together.

Another possible issue is sensor overheating which was not an uncommon problem with video on earlier generation DSLRs. Overheating will shut down the video recording feature. If that occurs the sensor must cool down a bit before you can restart shooting.

You can also shoot in lower resolution which will give you much more recording time per each 4 gig file. In that case though recording will still automatically stop when the video clip reached 29 minutes and 59 seconds.

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Mar 23, 2019 22:35:58   #
TriX (a regular here)
 
An alternative is to use a video recorder instead of the 7D. Not only will there not be a 12 min limit before restarting, but it will also have a wide zoom range, power zoom for smooth zooming, and it will stay in focus as you zoom. I know that professional grade movies have been made with Canon DSLRs, but I found it to be a PIA. After a few experiences, I just reverted to my video camera which is sooo much easier (and a decent HD video cameras is not expensive)

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