Joe Connell on 10 Aug, 2020 01:17 PM
Yes, it appears you are using AF and there is no way to be accurate
on when your camera will focus on the person/people in the booth.
This is an EASY fix using Manual focus
(Yea, I understand you don't want to use MF)
BUT it is simple and will capture 99% of all your photos
in perfect focus...
Before starting an event, set your camera to AF and do a session,
as soon as the first photo has taken in AF, change the setting
on the lens from AF to MF or P.
This will lock the focus from the first photo taken and now be in Manual
to take all the photos during your event. No time delay when the software
sends the command to SNAP the photo...
it is instant at the end of the Count down.
If you continue using AF, you can never be accurate in timing
for when the camera will focus. It can be 1/2 a second or
as much as 5 seconds... depending on what is happening
in front of the camera that it is trying to focus on.
Sorry, I am sure this is not what you wanted to hear...
but that is how AF works...
Thank you for the detailed explanation. I would really like to adjust (shorten) the last countdown in Sparkbooth, or rather listen to it :-)
As a photographer, I am aware of the interrelationships between AF use and non-use.
However, when I work with manual focus, I still have a delay from flipping the mirror down before taking the picture. Unfortunately not all cameras can flash when I use the option to keep the mirror up.
John Wu on 09 Sep, 2020 03:03 PM
When you have that setting enabled, it will turn off the live view before
taking the photo which takes some time. Some camera models have issues
taking a photo with live view on, but you can try disabling it and see if
it works with your camera.
You can also use a webcam for the live view instead
Unfortunately it does not work if it is deactivated. So I would like to be able to trim the last countdown time. Then the triggering would fit at least approximately into the rhythm of the countdown time intervals.
I didn't know about the possibility to share DSLR and webcam in Sparkbooth. But for that the Photobooth would have to be redesigned. That doesn't fit so well at the moment.