Hi reyalp, I'm reviving a topic from earlier in the thread. I asked about ways to speed up the shoot cycles. The context is that I use the two cameras for book scanning. The ideal would be shoot cycles just under 2 seconds because that is roughly how long it takes to turn each page in the setup. By changing some camera settings (disabling preview, etc) I'm down to 3,5 seconds cycles. I use chdkptp on the command line from another script. (I've also tried sending the commands in interactive mode and through the GUI but didn't get noticeably faster cycles that way.) The script first sets up zoom and lock focus and then trigger shots on both cameras with this
chdkptp -c "-p=[cameraid]" -e"luar shoot()"then wait 3000 miliseconds, redo the shoot command, wait, and so on. If I decrease the wait time then one commands often fails and only one camera is triggered. I don't download the photos during the shoot cycles.
I can manually cycle shoot the cameras quicker, even in noncontinuous mode. Holding the button down gives 10 shots in 17 seconds.
On my a540, using an old slow SD card =shoot() takes about 1.5 sec complete with jpeg. and DNG takes 3.5 sec. Shooting 10 DNG shots in a row with
=for i=1,10 do shoot() sleep(10) end
takes 35 sec. ... Using the new remote shoot stuff, a jpeg (including download) takes 1.3 sec.
You 10 cycle DNG speed is similar to what I currently get for capturing JPG with two cameras simultaneously. Can you tell me more about the new remote shoot features? Can you shoot a number of cycles at around 2 seconds using that?
Both my cameras have DIGIC III. Do you know if DIGIC IV compact canon cameras in general would cycle faster? Or does that depend more on the individual camera?
