you can setup when it should stop metering and display. I would believe that Cpu goes power down as soon as all writing is done and metering is off and there is no user interaction.
Rodolfo Paiz wrote:
There's something odd here, though. What I remember from my earlier cameras is that they would go to sleep after a few minutes. After an hour, my D800 is still on.
Rodolfo,
is your c2 setting on "No limit" or the default 6sec?
Andy
My c2 is on 6s. But while there may be a bug, there may not: after three hours of being on without being touched, my battery is still at 20%, precisely what it was at 3pm when I started this little experiment. More data required to draw any real conclusions, especially more controlled testing by those who are experiencing very short battery life.
Rodolfo Paiz wrote:
My c2 is on 6s. But while there may be a bug, there may not: after three hours of being on without being touched, my battery is still at 20%, precisely what it was at 3pm when I started this little experiment. More data required to draw any real conclusions, especially more controlled testing by those who are experiencing very short battery life.
Rodolfo,
if the D3 is a relevant example, the standby mode (LCD display is still on) uses about 1/1000 of the energy vs. "full readiness mode" with exposure meter =on and monitor is=on.
Mine only gets 600shots with a full charge which is pretty sad compared to the D700/D300s. Plus my metering is set to 4s (whichever is the lowest one). Hardly use LV or movie mode. It's usable for a full day but not more (to me). I used to think that the battery needs to cycle through a few charges, which may be a load of bs to people, but yeah i'll see. I've charged it 4 times so far.
How difficult would it be for an independent company to come out with a higher capacity battery since Japan's regulations is supposedly the limiting factor?
600 shots per charge sounds pretty weak and a far cry from the spec sheet of 900,
Rodolfo Paiz wrote:
What makes you think an independent company is going to be able to significantly outperform Nikon's battery?
From what has been posted online, the reason for the lower shot count of Nikon's latest generation cameras is due to Japan's increasingly strict regulations.
Just theorizing that if the battery is produced somewhere else, they wouldn't be limited by this.
JimFox wrote:
The battery life seems fine to me. This is just off the top of my head. But I have gone out with one battery and have done 2 sessions at the beach in 2 days, and I shot roughly 700 to 800 shots each time, so figure 1500 shots, and the battery had approximately 25% left...
So for the OP, perhaps it's in your technique?
Jim
My seems fine too. I get about 700-800 shots per charge.
I'm getting around 600 shots per charge, compared to 1000-1200 shots per charge with my D700. I attribute some of the drop to more chimping and use of video, but even then, I would be surprised if I can get more than 800 shots out of the D800.
Rodolfo Paiz wrote:
There's something odd here, though. What I remember from my earlier cameras is that they would go to sleep after a few minutes. After an hour, my D800 is still on. If there's a new setting for this that I missed, or the camera is factory-set not to sleep (which I'd call a bug), then that could affect battery draw and produce some of the odd "I'm getting 400 shots" experiences.
Rodolfo,
some "hard" data.
I let 2 cameras on for 9 hrs (overnight) . They were entering standby mode (Top level LCD display was constantly on)
In the morning, the D800 had still 100% battery indicated, the D4 was on 99%.
Running a 20 min 1080/30 video on the D800 brought it down from 100% to 89%. Given, that one 20 min video is approx 3,2 GB, one battery charge should be able to approximately fill one 32 GB SD card with videomaterial (or close to)
Interestingly, the D4 uses also 11% of its (larger) battery for a 20min video.
I find that battery life is similar to the D7000. I'm getting at least 950 to 1000 per charge and probably more as I don't usually run it all the way down.
Ok just had a photoshoot with a car model. After 260 frames only that first block on the battery meter was drained. Shooting style was taking setup shots to dial in the strobes followed by about 10 more frames after chimping some more. The battery info menu says it's at 68% though which seems like a discrepancy.
I just shot the whole weekend on one battery. 1237 shots with 25% left. This was with lots of chimping. Not sure why others are having such poor performance.
Turn off sensor cleaning and review image will definitely extend battery life.
I use SD as a backup for CD, write lossless compressed RAWs to both cards. Since deleting only affects one card, I cull later at home. Therefore screen is off most of the time (I use liveview for one or two overhhead shots). If I don't use the cam, I turn it off - a switch of the thumb that really zero time. Easily 1000 Shots with 50% or more left.
Contributing my data points from a few shoots, when I was tracking the battery life vs number of exposures
Data point #1 - mostly AF, moderate chimping, about 800 shots, mostly NEF
Data point #2 - mostly AF, lots of chimping (AF testing) - about 650 shots, mostly NEF
Data point #3 - all AF, mix of NEF and JPEG, three hour span (sprint triathalon) - 1000 shots with 25% remaining
Few other times battery completely died before I got to check # of exposures, but I would guess at least 700 shots.
i can count on about a 1000 clicks pretty easy out of a fresh battery,, I seldom chimp and usually have a VR lens mounted,,
I have never noticed if the camera turns off when laid down as when I am sailing my RC boat it lays beside me turned on all day,, will have to look and see it it drops off,,
perhaps it is in an idle state and activates all internals when any button is pressed,, ??
