I use this for long exposure photography mostly, though it has a time lapse mode, too. I'm dinging it one star because it has no off switch. Yeah, it doesn't use much power to keep the LCD on indefinitely, but I've already had it run out once on rechargeable AAAs. I'm also not a super fan of the way the beeps work, but you can turn those off. Camera shutter noise is enough for me to know when it's done.