Z9 battery "only" has 1.45x capacity yet can take a burst for 2.32x more pictures, showing that power draw during photography is actually less important than total time on, which is why people that turn their cameras off inbetween shoots tend to eek out more shots per day than people who leave their cameras in rest mode (and all those wasted 30sec-1min timers before rest mode kicks in).
p.11 #2 · Nikon unveils the highly anticipated Z8 camera!
From the Z9 manual, the burst battery rating figure is described in footnote 4:
"In-house measurements. Image quality set to JPEG normal, image size to “Large”, shutter speed to 1/250 s, shutter-release button pressed halfway for 3 s and focus cycled from infinity to minimum range three times before a burst of six shots, after which the viewfinder is turned on for 5 s and then turned off and the standby timer allowed to expire. This process is then repeated. Measured with a NIKKOR Z 70–200mm f/2.8 VR S lens. [Viewfinder only] was selected for monitor mode."
p.11 #3 · Nikon unveils the highly anticipated Z8 camera!
snapsy wrote:
From the Z9 manual, the burst battery rating figure is described in footnote 4:
"In-house measurements. Image quality set to JPEG normal, image size to “Large”, shutter speed to 1/250 s, shutter-release button pressed halfway for 3 s and focus cycled from infinity to minimum range three times before a burst of six shots, after which the viewfinder is turned on for 5 s and then turned off and the standby timer allowed to expire. This process is then repeated. Measured with a NIKKOR Z 70–200mm f/2.8 VR S lens. [Viewfinder only] was selected for monitor mode."
p.11 #4 · Nikon unveils the highly anticipated Z8 camera!
RoamingScott wrote:
That's much closer to "actual" usage vs CIPA.
Agreed but if you notice, the Z9's CIPA rating is 2.14x shots of the Z8 (740 vs 340 shots), whereas for Nikon's generated burst rating the Z9 is 2.3x shots of the Z8 (5,310 vs 2,280 shots), so the scaling is nearly identical between the CIPA test and Nikon's test.
p.11 #6 · Nikon unveils the highly anticipated Z8 camera!
yes it is
now your statement on the 2 different battery packs left out the differences in output voltage between the 2: 7VDC vs 10.8VDC. its not just capacity it output too. and there is a subtle difference there too.
p.11 #7 · Nikon unveils the highly anticipated Z8 camera!
snapsy wrote:
Agreed but if you notice, the Z9's CIPA rating is 2.14x shots of the Z8 (740 vs 340 shots), whereas for Nikon's generated burst rating the Z9 is 2.3x shots of the Z8 (5,310 vs 2,280 shots), so the scaling is nearly identical between the CIPA test and Nikon's test.
Like I said earlier, the CIPA scaling SHOULD be nearly identical when comparing bodies that have the same guts like the Z8/Z9. However, the CIPA numbers mean literally nothing in terms of real use.
PIOK wrote:
This is informative
Was already linked and discussed on the last page of this very thread.
p.11 #8 · Nikon unveils the highly anticipated Z8 camera!
RoamingScott wrote:
Like I said earlier, the CIPA scaling SHOULD be nearly identical when comparing bodies that have the same guts like the Z8/Z9. However, the CIPA numbers mean literally nothing in terms of real use.
CIPA is real use for those who walk around and take a photo every 30 seconds while using the EVF or LCD continuously between each photo. That's actually somewhat close to how I shoot. There are an infinite number of shooting scenarios in terms of time between images, AF use, etc.
p.11 #10 · Nikon unveils the highly anticipated Z8 camera!
You can find fault with any testing protocol. The real value in CIPA is not in determining how many shots you will get on a battery in daily use, and is not intended to. In fact ambient temperature when shooting has the potential to have a huge impact on this. Which no one here is even discussing in the protocol. My guess is that with the same person shooting, the same camera, on different days, the number of shots in a battery will vary significantly. So, no protocol will predict accurate number of shots you will get. Best to drop that concept from the discussion.
Rather, CIPA can be used to estimate the relative battery life between cameras in identical use cases. I am thinking it is reasonably accurate in estimating this.
I am also pretty sure that it is almost perfectly accurate in counting the number of shots when a camera is operating under the CIPA protocol. It is a metric. It is not a clairvoyant tool. Just accept and use it for what it is.
p.11 #11 · Nikon unveils the highly anticipated Z8 camera!
For MILCs, CIPA is basically a Live View runtime test. They should probably just quote the runtime in mins:secs and then quote a separate burst-only rating in shots.
Z9 battery "only" has 1.45x capacity yet can take a burst for 2.32x more pictures, showing that power draw during photography is actually less important than total time on, which is why people that turn their cameras off inbetween shoots tend to eek out more shots per day than people who leave their cameras in rest mode (and all those wasted 30sec-1min timers before rest mode kicks in).
You forgot the batteries also supply different voltages (7V vs 10.8V). If you compare the watts on the EN-EL15C (16Wh) and EN-EL18D (36Wh), which is a 2.25x difference, it gets more close to Nikon's CIPA (740/340=2.18x) or burst ratings (5310/2280=2.33x).
p.11 #15 · Nikon unveils the highly anticipated Z8 camera!
With regards to the GPS: I have an older Unleashed that works great on the D800. You put it in the 10-pin connector and then forget about it. It is actually barely larger than the connector. Via Bluetooth it can connect to some external GPS-receivers or your phone. I use it without any wires. The flash hotshoe is not used. They have good hope it will work on the Z8, apparently.
p.11 #17 · Nikon unveils the highly anticipated Z8 camera!
I think the CIPA drama is dumb. Nobody (including Thom, since somebody called his #s "real" battery life) uses cameras exactly the same as anyone else (or as they themselves did on another day), so of course you're not getting the precise battery life CIPA reports. The point isn't to give an "accurate" absolute number, it's to give you a consistent *relative* number between cameras by using a fixed methodology. So unless your claim is that CIPA somehow overestimates some cameras but underestimates others...
p.11 #18 · Nikon unveils the highly anticipated Z8 camera!
Lee Saxon wrote:
I think the CIPA drama is dumb. Nobody (including Thom, since somebody called his #s "real" battery life) uses cameras exactly the same as anyone else (or as they themselves did on another day), so of course you're not getting the precise battery life CIPA reports. The point isn't to give an "accurate" absolute number, it's to give you a consistent *relative* number between cameras by using a fixed methodology. So unless your claim is that CIPA somehow overestimates some cameras but underestimates others...
I don't think ANYone has claimed that CIPA overestimates real world use. I think the point is more about how wrong is CIPA from one model to the next. You can see that you can extrapolate performance from one body to another, within the same brand, if they share parts. You can't do that as easily between brands.
p.11 #19 · Nikon unveils the highly anticipated Z8 camera!
Lee Saxon wrote:
I think the CIPA drama is dumb. Nobody (including Thom, since somebody called his #s "real" battery life) uses cameras exactly the same as anyone else (or as they themselves did on another day), so of course you're not getting the precise battery life CIPA reports. The point isn't to give an "accurate" absolute number, it's to give you a consistent *relative* number between cameras by using a fixed methodology. So unless your claim is that CIPA somehow overestimates some cameras but underestimates others...
accept what you wish to accept. that's what's relevent to you
p.11 #20 · Nikon unveils the highly anticipated Z8 camera!
sjms wrote:
well you have a low bar for accuracy
Not really. I am thinking that using CIPA's protocol the results are both repeatable, consistent, and a reasonably good indicator of relative battery life. Which to me adds up to accurate.
