topic Re: fps in EOS DSLR & Mirrorless Cameras

fps

riza — Sun, 07 Jan 2018 14:09:52 GMT

i have a 5d mk4 with an announced rate of 7fps. but i can just ger 1fps. what may be the problem?

Re: fps

Waddizzle — Sun, 07 Jan 2018 15:10:45 GMT

@riza wrote:
i have a 5d mk4 with an announced rate of 7fps. but i can just ger 1fps. what may be the problem?

Not enough info to provide an answer. What is your exposure settings? Etc? I suggest that you contact Canon. They will ask you a number of questions, so that they can reproduce your shooting conditions, in an attempt to reproduce your issue.

There are a number of causes that can slow down the frame rate. A very slow shutter speed can slow down the frame rate. A slow focusing lens can slow down the frame rate. Some in-camera noise reduction settings can slow down the frame rate. A slow memory card(s) can slow down the frame rate. Writing to both card slots can slow down the frame rate.

Re: fps

kvbarkley — Sun, 07 Jan 2018 20:34:40 GMT

Make sure that Digital Lens Optimiser is not on. That is a real Digic-Hog.

Re: fps

BurnUnit — Sun, 07 Jan 2018 21:47:59 GMT

Shooting with the flash would slow things down too. Shooting jpegs instead of RAW files will probably increase your fps rate also. The owner's manual will probably explain which camera settings will effect the fps rate, but you may have to do a bit of digging.

Re: fps

riza — Mon, 08 Jan 2018 14:14:13 GMT

thanks a lot, after turning it off camera worked very well.

Re: fps

kvbarkley — Mon, 08 Jan 2018 14:19:25 GMT

Turning what off?

Re: fps

riza — Mon, 08 Jan 2018 14:34:35 GMT

Digital Lens Optimiser

Re: fps

RobertTheFat — Mon, 08 Jan 2018 14:39:15 GMT

@BurnUnit wrote:
Shooting with the flash would slow things down too. Shooting jpegs instead of RAW files will probably increase your fps rate also. The owner's manual will probably explain which camera settings will effect the fps rate, but you may have to do a bit of digging.If anythin

If anything, I'd expect shooting JPEGs to decrease the frame rate, since the camera would probably have to do more computation.

Re: fps

BurnUnit — Mon, 08 Jan 2018 15:16:52 GMT

Yeah... Don't leave us hanging. Share the cure.

Edit to add-

Thanks for filling in the details!

Re: fps

BurnUnit — Mon, 08 Jan 2018 15:14:16 GMT

@RobertTheFat wrote:

If anything, I'd expect shooting JPEGs to decrease the frame rate, since the camera would probably have to do more computation.

Was just basing this on the fact that it would take less time to write the smaller jpeg files to the card as opposed to the RAW files. It seems quicker to me at least when shooting single images. May have to experiment a bit with a burst of shots both ways.

Re: fps

kvbarkley — Mon, 08 Jan 2018 17:44:46 GMT

Besides what BurnUnit said, Digic is *highly* optimised for JPEGS. RAW's are always slower.

Re: fps

ebiggs1 — Tue, 09 Jan 2018 15:47:48 GMT

"If anything, I'd expect shooting JPEGs to decrease the frame rate, ..."

Robert, where did you see, or think you saw, that spec? I don't think it affects FPS but it does affect the buffer.

Re: fps

BurnUnit — Tue, 09 Jan 2018 18:18:22 GMT

@ebiggs1 wrote:
"If anything, I'd expect shooting JPEGs to decrease the frame rate, ..."

Robert, where did you see, or think you saw, that spec? I don't think it affects FPS but it does affect the buffer.

I think you've uncovered the right way to think about this. The images don't write directly to the card. They write first to the buffer and then on to the card after that.

Re: fps

lawrence — Thu, 11 Jan 2018 20:19:50 GMT

So the max writing speed of a CF/SD card that meets the camera's buffer-to-card writing speed matters.