Options
Canon 7D high speed continuous shot problem
There is something weird going on with my 7D when shooting in high speed continuous drive.
Basically in low light/under exposed situations it will not hit the 8fps, probably not even making 4fps.
To test this I've gone for manual focus (takes out any focus release issues), manual exposure so shutter speed is up over 1/2000s so can attain the 8fps and then shot. If I point at a correctly exposed or over exposed area then it will fire off as expected, if then somewhere less bright it will slow the shooting right down.
I've tried a settings reset to make sure nothing funny is going on but still no joy.
Any ideas?
Basically in low light/under exposed situations it will not hit the 8fps, probably not even making 4fps.
To test this I've gone for manual focus (takes out any focus release issues), manual exposure so shutter speed is up over 1/2000s so can attain the 8fps and then shot. If I point at a correctly exposed or over exposed area then it will fire off as expected, if then somewhere less bright it will slow the shooting right down.
I've tried a settings reset to make sure nothing funny is going on but still no joy.
Any ideas?
I'm here to learn so please feel free to give me constructive criticism to help me become the photographer I desire to be.
0
Comments
On the 7D, and only the 7D I believe, the new metering system can slow down the frame rate to favor AF accuracy. There is even a vague reference in the 7D User Manual. (Bottom of page 93.)
http://media.the-digital-picture.com/Owners-Manuals/Canon-EOS-7D-Owners-Manual.pdf
"In low-light areas or indoors, the continuous shooting speed may become slower even if a fast shuttter speed is set"
Moderator of the Cameras and Accessories forums
Manual Focus
Stabilzation off
Manual Exposure 1/2000 sec F5.6
High speed drive.
Raw capture
With the lens cap on frame rate is very slow
With the lens cap off frame rate is very fast.
If everything is manual why is this?
I can understand the calculations to find edges for AF and and light level for AE might take longer to do with low-light, but if everything is manual those calculations are not needed.
So it looks like when everything is manual the 7D is doing all the calculations needed for the auto settings, but then throwing them away before firing the shutter instead of just firing the shutter when the button is pressed.
Sometimes fly-by-wire isn't all it's cracked up to be.
http://www.danalphotos.com
http://www.pluralsight.com
http://twitter.com/d114
Moderator of the Cameras and Accessories forums