Last week we let our product team loose on Twitter so that our users could #AskTriggertrap anything they wanted to learn about how our apps and hardware works. Here's what you wanted to know.
Answer: Camera cable release ports are essentially a couple of switches - one to start and stop autofocus, and one to open and close the shutter, and Triggertrap tells these switches what to do. Unfortunately, most cameras have a minimum time the shutter button can be switched on for, and in Bulb mode that tends to be quite a slow shutter speed. We can send faster signals to the camera, but even sending a very brief pulse results in a longer than desired exposure. With these restrictions, it means we can’t accurately control a camera to take non-long exposure HDR sets.
@Triggertrap What's been the most interesting/unexpected use for TT that you've seen? #AskTriggerTrap
Answer: Everyone in our team has a different most interesting, as there have been so many photos taken that have used Triggertrap in a very specific way. I think for all of us the most unexpected use was a Father using Triggertrap to modify toys for his disabled daughter. Her disability severely limited her mobility, meaning she used simple switches to play and interact with her toys. After getting in touch to check it would work, the Father hooked up Triggertrap to the toys, and opened the door for some creative new ways to play. It’s one of the most awesome uses for Triggertrap imaginable, and we were delighted when we heard it worked perfectly.
Answer: On Android if the Welcome screen is dismissed (or completed) it should stay hidden on the next launch. If it keeps reappearing, then we’ll look into what is causing that! The Welcome screen is very important as it helps new users get to grips with Triggertrap, and get them on their way to creating some awesome images.
Answer: This is one feature we’d absolutely love to reintroduce. Older versions of the app did have this ability, but Apple rejected a build of the app during the review process on the grounds the audio signal we send couldn’t be understood by someone wearing headphones. To be published on the App Store, we have to make sure we stick to Apple’s Rules and Guidelines, but we’re always looking for new ways to work out a solution for this while staying in Apple’s good books.
Answer: Sadly camera cable ports don’t have any option to control the lens aperture, so we rely on the user to shoot in Aperture Priority or Manual if a specific aperture is required. For delays between LE HDR photos we originally chose a 1 second delay between photos in HDR sets to give cameras a chance to write the images to a card before the next one was taken. Varying the delay would be possible to add as a feature, but with the complexity of modes such as LE HDR Timelapse, there is a real risk of information overload, and from the feedback we have from customers, it’s not something we’ve seen a huge demand for.
Answer: Apple is great at giving developers easy access to all sorts of information from the device’s sensors. With the large fragmentation of the Android market - both with Hardware and Software - we’ve had no success trying to come up with a stable and consistent solution that allows us to get the information from the device’s sensors. Without the ability to get reliable information back from the device, these modes are unlikely to work every time, and so we have had to keep them out of the Android version of the app.
Answer: When the app opens, it requests an Audio Buffer from the Operating System to allow us to get audio information from the microphone, and to get our signal back out to our Dongle. We always request the smallest audio buffer possible, but it’s down to the Operating System to set the audio buffer size and on Android this is considerably larger than the iOS buffers. This means when there’s a sound, the Android app hears the sound later, and can’t tell the dongle to trigger the camera as quickly either.
Do you have questions about how Triggertrap apps and products work? Ask them in the comments section below! Make sure you also follow us on Twitter so you can get involved in the next #AskTriggertrap session.