UPDATE: April 10, 2019 - Sony released firmware 3.0 which includes in-camera intervalometer. learn more.  You may still want the MIOPS device below which does offer additional features and advantages.Sony ditched the internal apps for the a9, a7RIII and a7III - if you want automated time-lapse functionality you will need a separate device - I share some options for time lapses with Sony a9, a7iii and a7Riii.Time-lapse captured with Sony a7Riii and Miops Mobile Remotehttps://www.youtube.com/watch?v=P1Xo0eVldWQ

Scroll to the bottom for a few tips for shooting a time lapse -

S&Q  - Slow and Quick on the dial(Free)

Pro

• Free

• Nothing required

• Creates a video in camera, no software required

Con

• Limited to 1080p

• Slowest limited to 1fps, no pause between captures - not good for longer time lapses

• Limited editing with the video file

Standard Intervalometer ($25)Pro

• Cheap and simple to operate

• Powered by 2 aaa (easy to find or carry backups)

Con

• Cheaply made

• Limited control - basically delayed start and fire every x seconds/minutes/hours

• Limited feedback on progress - countdown only

• Dangles from camera (unless you spend more for the wireless version)

Wired: Cheap, less than $20Wireless: Ziv TRS-10 Timer Remote for $87Miops App + dongle ($35) Buy dongle from Amazon| MIOPS WebsitePro

• Over a dozen ways to trigger your camera from simple trigger, intervalometer, sound motion etc

• Helpful feedback during time-lapse or with trigger on screen

• Build scenarios for additional and powerful customization (e.g. setup a trigger that with a noise above x db will start a timelapse)

• Exposure ramping options for day to night time lapses

Con

• Your phone is tethered to your camera

• Your phone is dangling unless you clip it in the hot shoe or on the tripod

Recommended hotshoe phone holdersCheap: DSLR Hotshoe cellphone holderRock solid but pricey: MeFoto Sidekick + hotshoe mount

Miops Mobile Remote ($99) Buy remote from Amazon | MIOPS WebsitePro

• Low energy Bluetooth connection

• Control camera remotely - smartphone does not need to stay on or connected

• Over a dozen ways to trigger your camera from simple trigger, intervalometer, sound motion etc

• Good feedback on progress of timelapse

• Build scenarios for additional and powerful customization (e.g. setup a trigger that with a noise above x db will start a timelapse)

• exposure ramping options for day to night time lapses

• Very portable remote (tiny, really)

• Great battery life and auto shut off (when not running a timelapse)

Con

• Expensive

• Orange light flashes brightly when triggered - fine during the day but too bright at night- I cover mine with a lens cloth to hide the light

• USB charging

• Occupies hotshoe or you can let it dangle which is awkward

Time Lapse Tips:

• Full Manual Settings

• Manual focus

• A 2-3 second gap between shots

• Playback at 24fps means 24 shots will equal 1 second of video.

• Most viewers only want to see a single scene for 10-15 seconds

• Make sure camera is VERY stable. If on soft ground/snow/ sand it is possible that the camera will drift a little during the timelapse and that will be visible in playback.