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Author Topic: 7D Max 8FPS Burst Capacity Question  (Read 7690 times)

Fleetie

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7D Max 8FPS Burst Capacity Question
« on: March 31, 2011, 07:47:30 AM »
Hi.

My 7D always just says "4" in the viewfinder, at the bottom-right. I believe this is the number of shots that can currently be taken at max FPS, i.e. into the camera's memory, before the data gets transferred to the CF card.

So basically, if I put Drive mode to "many shots, fast mode", I get ONLY 4 shots at about 8FPS, and then it pauses to think about it and transfer the shots to the card, and then resumes for a couple of shots, pauses again, etc..

Why do I only get 4 shots before it pauses?

I have it set to JPG format, max resolution, and NO RAW ENABLED.

Thanks in advance,

Martin
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7D Max 8FPS Burst Capacity Question
« on: March 31, 2011, 07:47:30 AM »

DaveBurbankPhotography

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Re: 7D Max 8FPS Burst Capacity Question
« Reply #1 on: March 31, 2011, 08:03:09 AM »
I believe you have High Speed Noise Reduction set to strong:

Manual - p. 208:

"With setting 2, strong, the maximum burst rate for continuous shooting will greatly diminish"

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K3nt

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Re: 7D Max 8FPS Burst Capacity Question
« Reply #2 on: March 31, 2011, 08:13:59 AM »
Mine says 15 or 14 most of the time. However, I have never been able to actually reach 8 FPS, I mean I understand 8 frames per second as taking 8 pictures in one second. I was wondering if I need to enable mirror lockup to get maximum burst out of the camera, at least it wouldn't be spending time flipping the mirror back and forth.
For high speed shooting I can recommend the Kingston Ultimate 32GB 600x CF card, it's about half the price of the equivalent SanDisk offering and very fast. Been using it now for a few weeks and I am definitely going to get another one.
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Re: 7D Max 8FPS Burst Capacity Question
« Reply #3 on: March 31, 2011, 08:49:19 AM »
I believe you have High Speed Noise Reduction set to strong:

Manual - p. 208:

"With setting 2, strong, the maximum burst rate for continuous shooting will greatly diminish"

DaveBurbankPhotography
Hi.

You were right. I changed it from "Strong" to "Low", and now the capacity indicator says "74" rather than "4".

Thank-you.

Martin
Canon 5D3  ,  70-200mm f/2.8 L IS II ,  24-105mm f/4 L IS  ,  50mm f/1.4  ,  85mm f/1.8 ,  EF 2x III
Olympus OM2-SP , 50mm f/1.2 , 55mm f/1.2 , 50mm f/1.4 Silvernose , 135mm f/2.8 , 28mm f/2.8

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Re: 7D Max 8FPS Burst Capacity Question
« Reply #4 on: April 05, 2011, 04:13:15 AM »
OK. The mirror lockup thing didn't work as I thought, but now I know what that's good for. It actually requires two presses of the shutter release, one to flip the mirror up and another to take the shot, best for tripod long exposure shots. See? I'm learning. .  ;)
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EYEONE

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Re: 7D Max 8FPS Burst Capacity Question
« Reply #5 on: April 05, 2011, 04:15:39 PM »
OK. The mirror lockup thing didn't work as I thought, but now I know what that's good for. It actually requires two presses of the shutter release, one to flip the mirror up and another to take the shot, best for tripod long exposure shots. See? I'm learning. .  ;)

Mirror Lock up is used for macro photography where you can frame and focus on your subject and lock the mirror out of the way before you take the picture as to minimize the vibration of the mirror slap in the camera. When doing Macro work even the slightest bump can cause blur when taking the picture.

To get the 8fps you need a full battery and a bright room. Not overly bright but at least normally lit. If it gets too dark the fps will drop because of the metering system. You can test this by shooting Continuous High with the lens cap on.
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WarStreet

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Re: 7D Max 8FPS Burst Capacity Question
« Reply #6 on: April 05, 2011, 04:51:46 PM »
This is an interesting link with the use of a microscope. it compares 4 different modes including silent mode.

http://krebsmicro.com/Canon_EFSC/index.html

The same technique can be used on telescopes too, for the same reason, vibrations.


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Re: 7D Max 8FPS Burst Capacity Question
« Reply #6 on: April 05, 2011, 04:51:46 PM »

EYEONE

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Re: 7D Max 8FPS Burst Capacity Question
« Reply #7 on: April 06, 2011, 01:11:04 PM »
This is an interesting link with the use of a microscope. it compares 4 different modes including silent mode.

http://krebsmicro.com/Canon_EFSC/index.html

The same technique can be used on telescopes too, for the same reason, vibrations.


Interesting read. Thanks,
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Re: 7D Max 8FPS Burst Capacity Question
« Reply #7 on: April 06, 2011, 01:11:04 PM »