Ruminations on mirrorless battery life

Goethe

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So the other day I was hired to shoot four kids. Being that most of us here are photographers this isn't as horrible as it sound.

My primary camera is a Sony a7 and my backup is a NEX 7, so its clear I am firmly in the mirrorless camp. Have been for years. And for most of that time, on this forum and others, I have both read and responded to many posts decrying the horrible battery life of mirrorless cameras. It happened just a couple of days ago actually on this very forum. So I would like to use the opportunity of my previous weekends photo shoot to illustrate some points about mirrorless and battery life.

Let me first describe the conditions of the shoot. I met the family members on location around 7am, lead grey clouds obscuring any hint of direct sunlight. Since I am a natural light photographer I was rather pleased by this. I love overcast days. However we had a major storm the night before and all of my planned shooting area was soaked. There were full on puddles to be dodged as well as a thin layer of water all over the ground that was obscured by the grass. But believe me, it was there. My sodden boots and pants from the knees down were proof of that at the end of the shoot.

And it was cold. 40 degrees and dropping. And it was windy. Like sustained ten mile per hour wind with very frequent gusts up to about 30 or so. So NOT AT ALL ideal conditions to shoot four young children, two of whom were dressed in very, very nice fancy dresses with white hose and pretty dress shoes.

Hey mom, did you not understand the part where I said we would be shooting under a tree? In a field? On a cold morning after a minor monsoon?

Needless to say the logistics of the shoot that day were fairly challenging. We had to rotate the kids out of the warm vehicle we had standing by, having them walk across the wet ground in rain boots only to have them take off jackets and swap to nicer shoes once they were in front of the camera. But the ferocity of the cold, biting wind had them shivering in no time flat. Especially the girls in dresses, whose pretty white hose did NOTHING to mitigate the frigid air. On top of that I had brought out a wooden chair and book as a prop so that had to be dragged around to different positions as well.

My point in explaining all this, other then to give some backstory for the images I will post, is to point out that it was cold. And batteries dont like cold. And I did in fact notice a decrease in my normally battery life the day of the shoot because of this. The two batteries in my a7 exhausted themselves after only 630 shots. Far below the 800-900 I usually get out of two batteries.

But you know what happened as I was clicking away and suddenly my EVF popped up the message "BATTERY EXHAUSTED"?

I got up off my knees from the cold, drenched ground, looked at the mom and said "Batteries dead, take 5, put her coat back on". Then I trudged back thru the frigid muck to my camera bag that I had dropped about 25 yards away when we were shooting over there. I dug out my one spare battery and slipped it in the camera. At which point I trudged back over to the girl and ran about another 30 shots thru the camera. This was the last child in the last location we had decided earlier in the day to shoot so we wrapped up and headed home. I still could have drilled out another almost 300 shots if need be. But I had the shots I required, so we were done.

To put this in perspective, especially when facing all the challenging things that can happen on a photo shoot (including the youngest girl, only four and absolutely fed up with the cold wind, screaming that she wasnt taking anymore photos and wanted to go home) my point is that changing batteries is...

well...

... a non issue really. It entailed opening up the battery door, sliding out the tray, exchanging the battery, sliding it back in, and turning the camera back on. Including the time spent walking back over to my bag and then walking back over to the girl...I mean what? A minute and a half tops?

Mirrorless cameras dont have as good of a battery life due to usually having smaller batteries overall and also having to power an EVF. This situation will either be acceptable to you or it wont be. Each photographer will figure out if this makes mirrorless a tool they can use or not.

But it downright silly to criticize both the tool and the photographers who use them because one aspect of said tool doesnt meet YOUR requirements. Obviously there are those of us who have overcome the horrible appetites of our camera and work around it to simply...

...get the job done.

On that cold wet Sunday, freezing my butt off with a grumpy and screaming four year old and several other shivering kids the only time a battery entered my mind was when I needed to change it. So I freaking changed it. Like an adult. Then kept on working.

Had I needed more then 3 batteries I would have brought them. I have a car to carry them in, I have a bag to put them in. Heck...I have pockets to carry them in. They arent that big, and not heavy at all. So to all out there who may be reading this curious about mirrorless battery life.. it isnt the soul crushing human misery that some would have you believe it is. Its just a trade off for getting to use a super cool EVF, among other things. If you need more batteries, just carry them. Sorta like lenses, or filters, or extension tubes, or a rocket blower....

As promised, some photos from the shoot. All shots on a7 with either a Canon FL 55/1.2 or a Canon FDn 85/1.8. Hope you enjoy.

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--
Straylightrun- "Are you for real?"
Goethe- "No, I'm a unicorn. Kudos for seeing thru the disguise."
While I suppose I could be considered a natural light photographer I prefer to think I am a natural shadow photographer...
https://photolumiere.smugmug.com/
 
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Great shots with personally and atmosphere! About batteries: I have Sigma DP1-3M. They would probably have gobbled up all 11 batteries I have on that shoot so doesn't sound like much of an issue indeed.
 
You only get 300-400 shots out of a battery, over a relatively short time using the viewfinder, using non-stabilized lenses and on subjects that don't require tracking autofocus?

Geeze...that's truly awful.

I've managed 2,250 shots and several hours of viewfinder time, all with continuous tracking autofocus, and all on large, optically stabilized lenses, on one battery with 10% remaining. I normally carry three of those though I've never needed more than two.

Sounds like I'd need 20 batteries or so if I had your camera. How much would that cost and how long would it take to recharge them? I've had to do that sort of shooting several days in a row many times and the last thing I'd want to do when I get home after a day like that is spend all night swapping batteries in and out of a charger. I suppose I could get 20 chargers too but it sounds like an expensive logistical nightmare. And that's to say nothing about having to do 19 battery swaps during a day of shooting.
 
You raise good point with good context. DSLR fans like to throw around hyperboles of rhetorical problems of MILC batteries.

If you have a camera bag, then you can always slip a one extra battery there, that gives either 3 hour operation time (at least in normal temperature) or about 1000 frames (CIPA testing is meaningless) or around.

You have in bag anyways all other things from small clamps to flash, to filters, to rubber bands to cleaning tools etc and all extra lenses.

One extra battery is nothing as addition to there. You can have few extra batteries anyways.

The real problem that is with mirrorless extra batteries are these:

1) You need to spend extra money to buy them. Can be something from 20-100 price range.

2) You need to manage the charging of them.

3) You need to be aware of your shooting when the moment is good to swap the battery (vertical grips helps as you can swap just it as inbody one is as backup).

The actual power consumption and amount ain't problem. Where ever I go, I have one MILC hanging on the belt, it is usually with charged battery that I charge once a week just in case as longest period. I might have once hitted to moment when I got "battery low" warning without having any spares or ways to get spares. And it was just my fault as I totally forgot how much I had used camera in last week while being off-grid.

But after warning I knew I had about 150-200 frames to take typical manner, or spend about 20-30 minutes on-time.
 
I was on vacation for 4 weeks. I took over 2,000 pictures with my DSLR on one battery and that battery will be used this weekend for family holiday photos without being charged.

You have a camera system you like that gives you results you and your customers like that's great but seems like a hassle to worry about whether or not your battery will make it.

When I get a new camera battery life will be a big consideration. Information like your post will help me decide that mirrorless might not be for me. Or maybe it is, I won't know until I start shopping.
 
I have the luxury of shooting what I want, when I want. But I have never found battery life to be much of an issue with me with any of my cameras. I did buy two third party spares and a charger that I toss in my bag, but I don't use them much. I'd estimate they give me about 20% less life than the Olympus OEM batteries give me. I think when it's time to replace these batteries, I might just bite the bullet and buy an Olympus branded battery.

I have found that in cold weather though, I keep a spare battery in a coat pocket so I interrupt the 'creative process' as little as possible.
 
You only get 300-400 shots out of a battery, over a relatively short time using the viewfinder, using non-stabilized lenses and on subjects that don't require tracking autofocus?

Geeze...that's truly awful.

I've managed 2,250 shots and several hours of viewfinder time, all with continuous tracking autofocus, and all on large, optically stabilized lenses, on one battery with 10% remaining. I normally carry three of those though I've never needed more than two.

Sounds like I'd need 20 batteries or so if I had your camera. How much would that cost and how long would it take to recharge them? I've had to do that sort of shooting several days in a row many times and the last thing I'd want to do when I get home after a day like that is spend all night swapping batteries in and out of a charger. I suppose I could get 20 chargers too but it sounds like an expensive logistical nightmare. And that's to say nothing about having to do 19 battery swaps during a day of shooting.
 
I just went through a year of trying to like a Sony mirrorless and batteries were one of my main complaints, so am guilty of being one of the complainers. But my problem was not necessarily the number of shots, but the time frame. My Sony batteries would also go down in a week or two without use. I can leave any of my dslr's unused for months and the batteries are still almost full.

But the big thing that surprises me on this post is the number of shots taken. Guess it's because I grew up with film, but 650+ shots for 4 kids photos in one day of portrait type settings? Good thing you weren't using film. Instead of changing batteries twice, you would needed to change film 30 to ??? times depending on what format and roll size you used. How many prints did they need of the kids?
 
Here we go
You only get 300-400 shots out of a battery, over a relatively short time using the viewfinder, using non-stabilized lenses and on subjects that don't require tracking autofocus?

Geeze...that's truly awful.
And yet, the OP somehow managed to get the shots, and wasn't deterred even by needing to take 2 minutes to fetch a battery out of his bag.
I've managed 2,250 shots and several hours of viewfinder time, all with continuous tracking autofocus, and all on large, optically stabilized lenses, on one battery with 10% remaining.
I can easily bang off 2000 shots at 10fps on a mirrorless camera, and barely put a dent in the battery.

It isn't the shutter, or autofocus, or stabilization, that chews up battery time. It's the EVF or LCD.
Sounds like I'd need 20 batteries or so if I had your camera. How much would that cost and how long would it take to recharge them? I've had to do that sort of shooting several days in a row....
Yes, we know, you're a stud.
many times and the last thing I'd want to do when I get home after a day like that is spend all night swapping batteries in and out of a charger.
So much for studliness. Putting batteries in a charger is torturous? Who knew?

Anyway, the OP is describing a very typical use scenario, and did just fine.

The reality is that the shorter battery life of a mirrorless camera is not a dealbreaker for the vast majority of users, including many pros. If it doesn't work for you, then it doesn't work for you. C'est la guerre.
 
I was on vacation for 4 weeks. I took over 2,000 pictures with my DSLR on one battery and that battery will be used this weekend for family holiday photos without being charged.
I did a week trip in the Sierras, and did at least 1000 captures with mirrorless cameras. I never had a battery issue, never had to use my spare batteries, and never had a problem keeping the battery charged.

Keeping my phone charged was a much, much bigger issue. If you can handle a phone's battery life, you can handle a mirrorless camera's battery life.
 
You only get 300-400 shots out of a battery, over a relatively short time using the viewfinder, using non-stabilized lenses and on subjects that don't require tracking autofocus?

Geeze...that's truly awful.

I've managed 2,250 shots and several hours of viewfinder time, all with continuous tracking autofocus, and all on large, optically stabilized lenses, on one battery with 10% remaining. I normally carry three of those though I've never needed more than two.

Sounds like I'd need 20 batteries or so if I had your camera. How much would that cost and how long would it take to recharge them? I've had to do that sort of shooting several days in a row many times and the last thing I'd want to do when I get home after a day like that is spend all night swapping batteries in and out of a charger. I suppose I could get 20 chargers too but it sounds like an expensive logistical nightmare. And that's to say nothing about having to do 19 battery swaps during a day of shooting.
 
Here we go
You only get 300-400 shots out of a battery, over a relatively short time using the viewfinder, using non-stabilized lenses and on subjects that don't require tracking autofocus?

Geeze...that's truly awful.
And yet, the OP somehow managed to get the shots, and wasn't deterred even by needing to take 2 minutes to fetch a battery out of his bag.
Doing that in front of a client is highly unprofessional.
I've managed 2,250 shots and several hours of viewfinder time, all with continuous tracking autofocus, and all on large, optically stabilized lenses, on one battery with 10% remaining.
I can easily bang off 2000 shots at 10fps on a mirrorless camera, and barely put a dent in the battery.
"...and several hours of viewfinder time..."
It isn't the shutter, or autofocus, or stabilization, that chews up battery time. It's the EVF or LCD.
Sounds like I'd need 20 batteries or so if I had your camera. How much would that cost and how long would it take to recharge them? I've had to do that sort of shooting several days in a row....
Yes, we know, you're a stud.
many times and the last thing I'd want to do when I get home after a day like that is spend all night swapping batteries in and out of a charger.
So much for studliness. Putting batteries in a charger is torturous?
Putting a battery a charger every hour all night sure would be.
Who knew?

Anyway, the OP is describing a very typical use scenario, and did just fine.
No, he failed to be professional in front of a client.
 
I just went through a year of trying to like a Sony mirrorless and batteries were one of my main complaints, so am guilty of being one of the complainers. But my problem was not necessarily the number of shots, but the time frame. My Sony batteries would also go down in a week or two without use.
I have never, in all the years of owning my two Sonys, had this problem. I have left charged batteries in for weeks at a time and picked the camera back up with no decrease in the charge.
I can leave any of my dslr's unused for months and the batteries are still almost full.

But the big thing that surprises me on this post is the number of shots taken. Guess it's because I grew up with film, but 650+ shots for 4 kids photos in one day of portrait type settings?
This surprises you? Contrary to what some may think you dont go out and capture a Pulitzer Prize winning photo every time you click the shutter. Please reread my description of the post and imagine yourself in those conditions. Freezing, shivering kids...Canon FL 55/1.2....extremely narrow DOF, I shoot wide open a LOT....wind blowing both my shivering subject and myself....kneeling in cold, marshy earth....MANUALLY FOCUSING OLD FILM LENSES...

Yes, I was taking multiple shots of each child in each location to perfectly capture composition and background elements. Thats kind of what artists do. This was in a completely uncontrolled environment as well. Had I been in a studio with lighting and backdrop ready to go...then no, it would have taken nowhere near this. But 4 kids, in 4 different locations each, I estimated about 250 shots each to get the perfect keepers. But instead of 1000 shots I got what I needed in less then 700.

Have you ever shot professionally, or done paid work?
Good thing you weren't using film. Instead of changing batteries twice, you would needed to change film 30 to ??? times depending on what format and roll size you used. How many prints did they need of the kids?
 
You only get 300-400 shots out of a battery, over a relatively short time using the viewfinder, using non-stabilized lenses and on subjects that don't require tracking autofocus?

Geeze...that's truly awful.

I've managed 2,250 shots and several hours of viewfinder time, all with continuous tracking autofocus, and all on large, optically stabilized lenses, on one battery with 10% remaining. I normally carry three of those though I've never needed more than two.

Sounds like I'd need 20 batteries or so if I had your camera. How much would that cost and how long would it take to recharge them? I've had to do that sort of shooting several days in a row many times and the last thing I'd want to do when I get home after a day like that is spend all night swapping batteries in and out of a charger. I suppose I could get 20 chargers too but it sounds like an expensive logistical nightmare. And that's to say nothing about having to do 19 battery swaps during a day of shooting.
Thanks for being a poster child of the exact response and attitude I was talking about. "Wow, what you are using sucks, because there is no way that would work for meeeeee".

And speaking of your photography, its sounds like you must go on some marathon type photo sessions to be banging off that many shots on a regular basis. 2250 shots in a few hours time? Several days in a row? Incredible.
It's called "event photography".
What type of photography are you shooting? I cant find any examples of your imagery or links to them but I would imagine you have a huge backlog of what I must assume are just some cracker images. Can you direct me to where I can see some of them?
They aren't your events.
 
It isn't the shutter, or autofocus, or stabilization, that chews up battery time. It's the EVF or LCD.
It ain't neither one, it is the sensor being in readout whole time and CPU processing video.

Take any DSLR and start recording video, suddenly mirrorless cameras has better battery lifetime than DSLR.

The DSLR battery power comes solely from the inactivity of CPU and sensor when viewing through the viewfinder. Then comes the motors to swing mirror up down, operate shutter and do the quick processing. Even the DSLR external light metering or AF module consumes very little power (just like on mirrorless).

So when you are having DSLR, you can just look through the viewfinder as you want without much impact to battery power. Turn Live View on and battery runs out faster than on mirrorless cameras.

The mirror and optical viewfinder are the key reasons why DSLR has better battery lifetime, throw that away and you lose to mirrorless cameras that has more advanced computer systems.
 
Here we go
You only get 300-400 shots out of a battery, over a relatively short time using the viewfinder, using non-stabilized lenses and on subjects that don't require tracking autofocus?

Geeze...that's truly awful.
And yet, the OP somehow managed to get the shots, and wasn't deterred even by needing to take 2 minutes to fetch a battery out of his bag.
Doing that in front of a client is highly unprofessional.
HAHAHAHAHHAHAHAHAHHAHAHHA..LOLOLOLOLOLOLOLOL...(breath)....HAHAHAHHAHAHAHAHHAHA!!!
I've managed 2,250 shots and several hours of viewfinder time, all with continuous tracking autofocus, and all on large, optically stabilized lenses, on one battery with 10% remaining.
I can easily bang off 2000 shots at 10fps on a mirrorless camera, and barely put a dent in the battery.
"...and several hours of viewfinder time..."
It isn't the shutter, or autofocus, or stabilization, that chews up battery time. It's the EVF or LCD.
Sounds like I'd need 20 batteries or so if I had your camera. How much would that cost and how long would it take to recharge them? I've had to do that sort of shooting several days in a row....
Yes, we know, you're a stud.
many times and the last thing I'd want to do when I get home after a day like that is spend all night swapping batteries in and out of a charger.
So much for studliness. Putting batteries in a charger is torturous?
Putting a battery a charger every hour all night sure would be.
Who knew?

Anyway, the OP is describing a very typical use scenario, and did just fine.
No, he failed to be professional in front of a client.
 
You only get 300-400 shots out of a battery, over a relatively short time using the viewfinder, using non-stabilized lenses and on subjects that don't require tracking autofocus?

Geeze...that's truly awful.

I've managed 2,250 shots and several hours of viewfinder time, all with continuous tracking autofocus, and all on large, optically stabilized lenses, on one battery with 10% remaining. I normally carry three of those though I've never needed more than two.

Sounds like I'd need 20 batteries or so if I had your camera. How much would that cost and how long would it take to recharge them? I've had to do that sort of shooting several days in a row many times and the last thing I'd want to do when I get home after a day like that is spend all night swapping batteries in and out of a charger. I suppose I could get 20 chargers too but it sounds like an expensive logistical nightmare. And that's to say nothing about having to do 19 battery swaps during a day of shooting.
Thanks for being a poster child of the exact response and attitude I was talking about. "Wow, what you are using sucks, because there is no way that would work for meeeeee".

And speaking of your photography, its sounds like you must go on some marathon type photo sessions to be banging off that many shots on a regular basis. 2250 shots in a few hours time? Several days in a row? Incredible.
It's called "event photography".
What type of photography are you shooting? I cant find any examples of your imagery or links to them but I would imagine you have a huge backlog of what I must assume are just some cracker images. Can you direct me to where I can see some of them?
They aren't your events.
 
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Here we go
You only get 300-400 shots out of a battery, over a relatively short time using the viewfinder, using non-stabilized lenses and on subjects that don't require tracking autofocus?

Geeze...that's truly awful.
And yet, the OP somehow managed to get the shots, and wasn't deterred even by needing to take 2 minutes to fetch a battery out of his bag.
Doing that in front of a client is highly unprofessional.
LOL!

I think that in track racing the 1-2 pit stops to fuel and change tires is as well very unprofessional.

Or keep the lunch periods is as well very unprofessional.

Switching lenses is as well very extremely unprofessional, why you need to have at least 4-5 bodies with each having a own lens and switching those cameras then hanging around your body!

AD or client looking the photos over shoulder, peeking them, asking things etc while the shoot is going.... Very unprofessional, right.... There just ain't anything like never done like giving an ipad for client to see the shots you take so they can work with you.... Stop you from doing something and ask something different etc.
I've managed 2,250 shots and several hours of viewfinder time, all with continuous tracking autofocus, and all on large, optically stabilized lenses, on one battery with 10% remaining.
I can easily bang off 2000 shots at 10fps on a mirrorless camera, and barely put a dent in the battery.
"...and several hours of viewfinder time..."
I can get 3 hours viewfinder time with single battery, and record either in that time video or shoot full bursts all the time.

Mirrorless cameras are time based, not frame based.
It isn't the shutter, or autofocus, or stabilization, that chews up battery time. It's the EVF or LCD.
Sounds like I'd need 20 batteries or so if I had your camera. How much would that cost and how long would it take to recharge them? I've had to do that sort of shooting several days in a row....
Yes, we know, you're a stud.
many times and the last thing I'd want to do when I get home after a day like that is spend all night swapping batteries in and out of a charger.
So much for studliness. Putting batteries in a charger is torturous?
Putting a battery a charger every hour all night sure would be.
Okay, now I know you know nothing about professional photography....

- You will recharge and replace batteries for flashes.

- You will clean and check every stand, tripod, clamp, lamp, light modifier after use and before packing them.

- You will package every gear before leaving, after shoot and after studio.

- You will re-check gear before leaving from studio or leaving the location.

- You will keep a small stock of all kind consumable parts, from batteries, cables, light modifiers, stands to filters, lenses, bodies etc.

Not to mention even that you will manage the files backups, distribution, management etc.

Putting a empty battery to an charger is cumbersome for you, meaning you are incapable to handle any professional gear.
Who knew?

Anyway, the OP is describing a very typical use scenario, and did just fine.
No, he failed to be professional in front of a client.
No, you failed in commenting.

A changing battery mid-shoot is no problem.

Unless you are an idiot:

ROFL......

Oh boy.... "Unprofessional in front of the client".

Cameras will show the battery warning way before it is depleted. You have so much time to just prepare for the swap by keeping a pause or something.

If he would have forgotten to bring any spares, or all spares would have been totally empty (forgot to recharge) and required to stop shooting, go to get them or organize a new camera, THAT would have been unprofessional!

No wonder DSLR shooters are so terrible sometimes as their excuses against mirrorless cameras are so bad... Maybe they have so good assistants that they don't even know their DSLR has batteries when assistants are making so great job by keeping all in correct condition....

But seriously, you have over 51 000 posts here, and you claim that changing a battery in front of the client is unprofessional.....

Oh jeez..... laughs of the month.
 
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