For the 1Dx owners, what is your average Single-Shot AF shot count vs battery usage? I know that there are stories of people who are using Servo with high speed drive getting 2000+ shots per battery, but it's odd that my 1Dx has used 10% on 51 shots. Doesn't matter what lens, 35/1.4 - 24-70/2.8L - 70-200/2.8L II IS - Zeiss 21 ZE. Doesn't matter if IS is used or not. Tried three different batteries so far with three different vintages, one battery with 2 years on it and a few hundred cycles all the way to a new battery (3 months old) with about a dozen charge cycles. Even gets the same using some old LP-E4s from my 1Ds3. Of course, Canon CPS has no clue about what the expected battery life should be ("it'll vary with usage").
My shakedown test pattern is using auto focus "normally" as in a typical studio environment: half-tap shutter to wake camera, lining up the center AF point, pressing back AF button until it beeps and firing. No extended AF tracking/holding, no AE locking to keep the meter on. Image review of 2 seconds and then a half-tap of shutter to turn off screen. Continue shooting about 10 frames with about 5 seconds in between shots, then letting it turn off on its own. The auto-power off of 1 minute was then allowed to kick in. All of my 51 test shots were low ISO 100, studio lit shots. Same batteries and lenses on my 1Ds3 are only moving about 2% for 51 shots in the same sequence.
Shooting in a full studio environment, about 76F air temp. Tried 3 different 1000x cards, Transcend/Lexar/Sandisk 32GB UDMA7 (new gen) cards. Camera wasn't tethered, LAN was disabled, no GPS or other external accessory attached. Just a PW Max on the hotshoe for studio light triggering.
Yeah, the 1Dx has more processors, etc. But with that kind of draw, that would only make about 500 shots per battery in single-shot mode. With the 1Ds3, I was averaging 1500-1800 shots per battery in studio with the same usage pattern. The camera had just come back from CPS with a new shutter and new FP PCB, and I just resolved a weird sleep mode power drain caused by the 2.0.7 firmware.
Are any of you other 1Dx users getting the same battery trend for one-shot/single frame usage (about 500 shots average)?
Here's the 4th test attempt (newest battery):
Here the test with the Zeiss 21ZE (no AF confirm or live view used - tested with newest and oldest battery, results were about the same):