photo options

Hi all! I have a question about photography settings. When in manual mode, I see all parameters (shutter speed, ISO, aperture) with many intermediate values between stops. Is it possible to set them more traditionally? example, shutter goes 1/15, 1/20, 1/30, 1/40,.... and I'd like having less...

My live view feed is usually very smooth and responsive but every time I take a photo it pauses for a second. Is this a glitch or am I being shown a preview of the photo? I have an SD card so it should be the Drone saving the picture. While taking lots of photos or using the 2-second continuous...

When I look at other screenshots from the photo modes page, there are several photo options (timed shot, hyperlight, multiple etc.), however I only see a Single Shot option on my screen.