Why You Should Always Use Two Latches to Close a Lens Case

One Latch vs. Two Latchesphoto credit: Adam Richlin

When you fetch a lens from the lens case, do you use one or two latches?

For whatever reason, this is a question that I see many camera assistants debate.

On one side you have the group who prefers one latch because it’s faster to get into the case and get what you need. On the other side, you have those who use two latches, primarily for safety.

I fall firmly in the latter group and always — seriously, always — use two latches on the lens case.

And here’s why…

1. Ankle Biters

Anyone who has stepped on a set knows things move fast, get chaotic, and can become cramped. In many locations, because of the amount of crew and gear, there are small, one-person walkways.

While storing camera gear in these tight spaces isn’t optimal and undesirable, it happens.

And leaving one latch undone in cramped spaces results in what can only be referred to as “ankle biters” — that is, the latch sticks out and will snag anyone on the ankle who walks too closely to it.

Doing so is akin to stubbing your toe — it’s a minor injury, but it hurts like a b***h.

When two latches are up, they will be flush with the case and this becomes a non-issue.

Even in locations where space is abundant, ankle biters can strike crew if the case is turned the wrong way in the staging area, sitting on the shelf of a camera cart, or on standby near the set.

Bottom line: it only takes one latch to tear up your ankle to learn the value in locking it up.

2. Lens Safety

Well-designed cases can go an entire shoot with one latch up and never bust open or show any sign of weakness.

But part of being a camera assistant means being a little paranoid about your equipment. And this is where the main argument for one latch falls apart: Yes, it saves you time, but it also means putting the lenses at risk.

And what’s worth more: your time or a camera lens?

I promise that no matter what your day rate is, it’s the lens.

When it comes down to it, the time you save is negligable. I’d say it’s 3 seconds (and that’s being very generous). If you’re already squatting down latching up the lens case for one side, you might as well do it for the other.

Still skeptical? Think about this scenario: you latch up one side of the case and leave to deliver the lens to the camera. The setup changes so you go to grab the lens case. You reach down, grab the handle, pick it up and the latch comes undone — in your haste you didn’t actually snag it on the lock, so it was flipped up, but not locked. Lenses come tumbling out and your ass is on the grinder.

If you had used two latches, you would have had the 2nd one as a “backup.”

It’s true most lens cases lock fine with one latch and the example I provided is a matter of human error, but the trade-off between keeping the lens safe against a few extra seconds is totally worth it.

It’s important to be quick and efficient when you’re a camera assistant, but it’s more important to treat the equipment — especially lenses — with care.

Two Latches > One Latch > No Latches

So, to summarize, two latches on a lens case is better than one because…

  • It is safer for the lenses
  • It won’t snag people on the ankles
  • It doesn’t take that much more time to do

Still, one latch is better than no latches: I once trained a novice 2nd AC on a low-key student film and, after giving him a run-down of his duties, reminded him to always make sure the lens case was closed before moving it.

The next day between setups, I heard a banging noise and turned around. Rolling on the ground was a lens and in the hand of the 2nd AC was the lens case flapped open like Pac-Man.

The lenses were OK, but my heart was racing as I’m sure his was too.

He never forgot again to latch the case and learned to prefer two over one as well. Which is good because I would’ve made him do it anyway — that’s the advantage of being the boss!

About the author:

About the author: Evan Luzi is the editor and founder of The Black and Blue as well as a freelance camera assistant.

You can learn more about him or follow him on Twitter and Google+.

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  • Benjamin_Tubb

    Couldn’t agree with you more.

    Although the argument I’ve always heard about the single latch concept has nothing to do with speed, it has to do with identifying a “working case”. That way, the camera PA won’t pack away a case that still has contents in play. Basically, if a case has all latches closed, then it’s not currently in play.

    But it still doesn’t make enough sense. I always latch both.

    Taking it a step further: anytime I go to lift a case carrying something heavy/pricy (head, body, lenses), I never assume the latches are good and tight. I always take the extra two seconds to run my hand over each latch to make damned sure it’s locked down before lifting.

  • Oren Soffer

    Although I understand concerns of lens safety, the “working case” policy is one that I usually abide by and see others abiding by on set. It’s one single, extraordinary simple rule that avoids confusion and lots of wasted time on set, especially when there is a large camera crew with multiple camera PA’s, all of whom are constantly trying to consolidate, pack things up, keep things neat and accessible. I have seen this happen too many times not to appreciate how streamlined it makes things. And as long as cases are properly labeled, when I am camera assisting I will always be extra careful with the lens case anyway, and probably close both latches before picking up the case and moving it (but I’ll re-open one once the case gets to its new location, if there is still a lens in play.)

  • Max

    Surely lenses are the last thing (along with the camera body) that get packed away at the end of a shoot, so leaving one latch open to identify it as a working case is still not a strong enough argument , I think. Good Camera Assistants should know which case is a “working case”. Safety always comes first. Ani stam omer :)

  • http://www.facebook.com/msowilski Maciej Sowilski

    2 latches. And I keep the lenses locked in car only I and 2AC have the keys to – it’s since the PA I’m no longer working with dropped set of lenses to the floor (fortunetly nothing bad happened to the lenses).

  • Thomas

    Had a PA on a small shoot who absolutely could not wrap her mind around the concept of “leave it open or close it and latch it.” On the very first day, she dumped unlatched equipment cases three times, all of which were unlatched because she had been in them last.
    I don’t know what it was that kept her from learning after the first time; it seems so simple.
    Needless to say, she wasn’t around for the second day of the shoot.

  • http://twitter.com/stingers_cam Neil ‘Stingray’Irwin

    Indeed this is always true in my opinion. I’ve had a lens case open on me before when it wasn’t latched properly by the previous person.
    Whenever I close a lens case I would either;
    a) close it with one hand and press it shut while the other does up the latches,
    or b) close it then use both hands at the same time to close both latches (as long as I’m not holding anything in the other hand).
    Then no matter what – always do a quick visual inspection of the latches to make sure they are closed as you may think they’re closed even when they’re not as some cases can be dodgy. Then when I pick the case up with the handle – I ALWAYS use my index finger pointer outward pressed firmly again the side of the lid just to have that reassurance when I’m walking around with it. (It’s just my own little habit but different people work in different ways).

  • http://twitter.com/stingers_cam Neil ‘Stingray’Irwin

    I also always use 2 latches – never 1.

  • Howdygal

    This all comes down to training and training. Your training and the training you can provide to all around you.

    This used to be a given, one latch, which indicates that the case is in use. It signifies – DON’T SIT ON THE CASE; KEEP THAT SPACE CLEAR AS IT IS A WORKING “OFFICE” AND IN USE.

    A camera assistant shouldn’t have to take the time to lock both latches when they are in the process of changing lenses or fitting the viewfinder with a lens. When this is happening, it is amongst the most important thing that is happening on set. Everyone is waiting to know what lens will be used for the shot so they can do their job, so why would anyone be lingering around the lens case during this time? I get it about tight spaces, I’ve been there myself on occasions too numerous to count, but REALLY, ankle biters? Let’s train the crew to be smart, be aware of what the priorities are on the set and not just “your” job, respect the cases and their space, the camera assistants and the immediate pressure they are under when they reach for those cases and free a lane for them to do their work which will only help you get home earlier.

  • HumanGobo

    I’m also of that mindset that a one-latched case means “In use!”
    Thankfully, I haven’t had any incidents because either I’m the only AC and thus the only one grabbing the case, or my 2nd understands that I do this, and follows along accordingly :)

  • HumanGobo

    Honestly, a lot of the time I’ll use a one-latch system. Most of the folks I work with understand that, or they’ll just never touch the lens case in the first place because they know it’s my domain and I’ll give them hell if they do things improperly ;)

    Most often it’s just been me ACing a shoot, but lately when I get a 2nd, They understand that I do this, and work accordingly. I also tend to keep the lenses on my cart, when I’m able to have it with me, so it’s generally understood that no-one but camera dept touches anything on that cart unless they ask me first.

    Of course, if I’m ever moving a case around, it’s 2 latches for sure!

  • Justin

    I don’t know where this whole working latch thing came from. It saves no time and it’s a stupid habit to get into. And If I find someone sitting on my lens case there’s bigger issues to be delt with.

  • http://www.theblackandblue.com/ Evan

    I can see the merits in a “working case” latch, but it would only work if the PA and other crew knew what the one latch meant. In some cases, they may not. And if they’re gonna grab the case anyway, I’d rather it have two.

    But honestly, they shouldn’t be touching it unless you instruct them to — working or not.

    Good idea to check with the latches before moving. If you have the few extra seconds, it’s certainly worth it.

  • http://www.theblackandblue.com/ Evan

    I get it, in some ways, but I don’t think the trade-off is worth it. Different strokes for different folks.

  • http://www.theblackandblue.com/ Evan

    Good point — on the cart and on the ground might call for different systems since a cart is wheeled and not really carried.

  • http://www.theblackandblue.com/ Evan

    I definitely understand the merits of the working case argument here, but again, I’m not sure the trade-off is worth it. The time it takes to lock both latches is minimal and, if there is really a big crunch for time, can be done after a lens has been mounted (i.e. when the 2nd AC goes back to grab something else or return the finder).

    As for the ankle biters, crew certainly should be aware of cases, space, and make lanes for traffic, but cast, extras, and those with inexperience aren’t necessarily going to be watching out for it. And I think we’ve all filmed in locations where a free lane to cases is too small to be practical or the staging area you’re forced into sucks.

    I’m not saying doing one latch is the worst thing in the world — if I 2nd AC for a 1st who prefers it, I will comply — but I still think the pros of the second latch outweigh the pros of leaving it loose.

  • http://www.theblackandblue.com/ Evan

    It never hurts to be overly cautious — especially if you have a system (like your index finger) that is efficient for you.

    I will say that about the only time I have been guilty of 1 latch is between lens changes since I know I will be returning to the case quickly.

  • http://www.theblackandblue.com/ Evan

    Wow — sounds like a horror story for whose gear it was in those cases! It really is simple and I’m not surprised she didn’t last. A lot of times being a good worker on a film set is about avoiding your worst habits — laziness with closing things, being disorganized, etc. — in the name of the shoot.

  • http://www.theblackandblue.com/ Evan

    Glad to hear the lenses are OK! The AC’s should definitely be the only ones touching the lenses or granting permission to do so.

  • http://www.theblackandblue.com/ Evan

    If it works for your crew, then that’s awesome. I think when using one latch it’s important for everyone on the crew to understand what that means and to close both latches when moving the lens case any significant distance. One latch can work — I’ve seen it work and done it for 1st ACs — but its more about preference. In your case, the extra efficiency is worth it. In my case, I trade a few seconds of time saved for the extra peace of mind. Both have their caveats!

  • http://www.theblackandblue.com/ Evan

    I agree, Max, that good AC’s should know which cases are working cases. On small crews, this is easy and pretty much a given. In Oren’s situation, he was describing multiple cameras with multiple AC’s and PA’s — I can see the working case being beneficial there.

    Just playin’ Devil’s advocate ;)