Re: Video capture on EOS 650d only with 4 to 8 fps?

On Sat, Dec 26, 2020 at 04:45:16PM +0100, Thomas Orgis wrote:
> Am Sat, 26 Dec 2020 13:47:05 +0100
> schrieb Marcus Meissner <[email protected]>: 
> 
> > Usually the whole ptp transaction phase is camera or hardware bound, there might
> > be optimization possible, but usually its okayish.
> 
> I agree.
> 
> > 
> > You probably removed hubs inbetween and plugged it directly into the machine?
> 
> Yes.
> 
> > Also, as mentioned earlier, the camera processor can be overloaded if we poll
> > too often... Are all those returning images or also returning the busy error codes? 
> 
> I picked examples for discussion that didn't include any roundtrips. I
> presume the device won't ship data faster (with the stock firmware).
> Maybe one could add some data about to be expected performance of movie
> recording in the documentation about remote-controllable cameras.

Just in case you want to try current git, i also changed a bit of logic.


My experiments:

- EOS 1000D: gets around 20 FPS				(released August 2008)
- EOS 100D:  gets around 13 FPS (before and now)	(released 
- EOS 750D: gets around 25 - 30 FPS			(released April 2015)
- EOS M10: gets a higher framerate ... (probably however returning a buffer).

I see no conclusive logic or timeline between what is not working at full framerate and what not.

( https://www.dpreview.com/products/timeline?year=all&brand=canon&category=cameras )

Ciao, Marcus