I took lots of photos yesterday with my SX220hs stereo rig.I used SDM focus-cancel mode with the usb switch.One click to focus, longer press-and-release to take photos.They are all in-focus, of course David
when trying to photograph an (low-flying) aeroplane or any sort of moving object with the SX40 rig (fully zoomed in) it's hard enough to get one camera to properly focus on it, let alone both at once.
Quote from: Recyclojunk64 on 09 / May / 2014, 11:28:00when trying to photograph an (low-flying) aeroplane or any sort of moving object with the SX40 rig (fully zoomed in) it's hard enough to get one camera to properly focus on it, let alone both at once. Very difficultWith my SX50hs I use manual focus set to infinity or the camera will keep losing focus anyway.There is no way your rig can solve this problem, in my opinion.The aircraft are high enough that they are in-focus at infinity even with 1200mm setting.Trying to keep them in-frame is VERY difficult if you are shooting movies.
these are usually small two-person aeroplanes that are flying overhead) so I'll have to come up with a solution to the momentary lack of preview when using the precision sync.
How difficult do you think it might it be to implement the synced video in this thread? Does any code already exist or will I have to write something from scratch?
On the topic of zoom, would anyone know of any other ways to sync the zoom other than simply checking the propcase (which only updates when zooming is finished) or simulating the zoom buttons (which won't be very accurate)?
I was using shooting_get_subject_distance() to read the focus, and shooting_set_focus(distance, SET_NOW) to set it. It worked, but the slave was massively short-sighted (if the master was focused, say 2 metres away, the slave would be focused to about a foot). So I tried using shooting_get_subject_distance() to read the distance the slave was actually focused at, and found it was about 43 units less than the number being put into shooting_set_focus.
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