questions about 1d mark III fps.......

we all know the 1d mark III is capable of 10 fps but how many fps for large raw files?

okay, let's say the 1d mark III is capable of 8.5 fps of large raw files when set at 10 fps.

what if you set the camera for 7 fps ..... does it shoot an actual 7 fps or a lesser number like say 5.75 fps?

i've always wondered about this. thanx .

ed rader

Have you tried shooting a digital stopwatch to see how the FPS really aligns with the passing seconds?

FlyingPhotog wrote in post #8646089
Have you tried shooting a digital stopwatch to see how the FPS really aligns with the passing seconds?

uh, no .

ed rader

I think it still gets 10fps in RAW.

I was sure it was still 10 FPS in raw.... and raw + jpeg, you just get less of a buffer...

It is very very fast. I noticed a huge diffrence going from a 40D and 50D.

FlyingPhotog wrote in post #8646089
Have you tried shooting a digital stopwatch to see how the FPS really aligns with the passing seconds?

you should try this and see if it does.

Or use a sound recorder while running the shutter and then analyse the sound file to determine when the shutter operates.

When you read the spec sheet FPS may be be influenced by shutter speed as well as the size of the files.

From the Canon Specs on the Mark 3

Continuous Shooting Speed
Approx. 10 fps (at a shutter speed of 1/500 sec. or faster in all recording modes); fastest speed can be lowered if desired via Custom Function III-16
Maximum Burst
JPEG: approx. 110 frames (Large/Fine, at standard level 8 compression setting)
RAW: approx. 30 frames
RAW+JPEG: approx. 22 frames (Large/Fine)

I always understood that you could get the full FPS no matter what you're shooting (RAW or JPEG or RAW+JPEG), it's just the buffer fills up much quicker, as bigguytf showed just there...

let's not forget the shutter speed set, factor

I think the you lose some speed when you shoot in high iso.

you don't lose speed in high ISO, the buffer just fills up quicker still because it has more stuff to do...

caesar2164 wrote in post #8647934
you don't lose speed in high ISO, the buffer just fills up quicker still because it has more stuff to do...

Which in turn, leads to slower fps...

The fps for RAW images remains at the published rate subject to the shutter speed selected would allow for the this rate to be attained.

This subject is covered on pages 53/54 of your user manual.