Yeah no. What he's done is great testing and gathering solid data, but actual science is a completely different animal. I like Steve, I like this video, but can we please stop calling everything that goes beyond someone's subjective opinion "science"? It's a misuse and devaluation of the term.

I use this and a standby time that I shorten if I want to save battery.

Well said. S.P. ( Steve Perry ) Could stand for “Super Practical”. 😊👍✌

Define cold. 40 degrees? 20 degrees? I’ve shot at -28F before the windchill and have never had a problem with a battery (I shoot Nikon, can’t speak to other manufacturers), but every lens I had quit autofocusing and the camera was covered in ice from my breath. So when it’s cold, I’m more concerned with the lens functioning and controlling my breathing before I worry about a battery.

@@GulbransonPhoto It seems You have already defined Cold! You bring up some really valid and interesting points. I can’t say I have ever shot in quite as cold conditions as You, but I have had several of my old DSLR’s out in the Winter, and especially my trusty old D700, which kept right on shooting, with a light covering of snow on top! It have a grip on it, with the larger battery, which does fine. Now I have heard of people having issues with batteries and cameras being ‘sluggish’ in really cold temperatures, as in below freezing. If a camera is left up on a tripod, and not being handled often, might be a problem? I think a photographer gripping the camera helps the battery compartment to some extent? Excellent point on lenses not auto focusing; lubricant and precision focusing motors and gears no doubt can be effected by very cold temperatures, and would be much more problematic than a cold battery. Some swear by Lens Coat and similar covers helping in this regard, and I know of some that will not use lens covers. As for your breath, if it is that cold, I personally would be wearing some type of ski mask, balaclava, etc. Good comment. Stay safe.

@@georgedavall9449 it was painfully cold, lol. I have mad respect for Morten Hilmer and his shooting in Svalbard. When I was shooting in those conditions, I use a neoprene balaclava, but your breath still gets on the camera. Best practice is to control your breathing and not exhale when looking through the viewfinder. Anyway, just wanted to add my experience with cold weather and batteries here in Minnesota. :)

@@GulbransonPhoto I agree with regards to Morten Hilmer! Glad to hear you taking care of yourself in those conditions, and You are spot on with the breathing and all. I’ve long been a fan of the Vikings, but never have set foot in Minnesota. It is on my ‘bucket list’ though. Love to have some of that cold Minnesota air right now! :-)

Agree - and I thought I mentioned something about that in the video, but maybe not.

@@backcountrygallery I don't recall anything of the added bonus of 'locking' your camera up when you switch it off. I am sure you did though as you usually cover everything in great detail. Great videos and so well sorth watching you... even after some 40+ years of professional photography!

Hi Howard. Especially if you're a 5D4 user ( DSLR. ). Eats those sad LP-E6N batteries for Lunch! I have found the ‘NiteCore’ version of the LP-E6N batteries to be rather good! Give them a try. Take care

N o matter what camera you use take EXTRA batteries with you.

For sure. One of the most underrated benefits of the Z8/9 IMO.

Yeah, mirrorless battery life (any brand) is a shock when coming from a DSLR. My D5/6 would often go several days - even a week sometimes - before I thought about charging. Although, I don't really think about it anymore - at the end of the day / session, depleted batteries hit the charger :)

I'm looking at that now in fact. It'll be in my Z8/9 wildlife setup guide for sure. I may do a video, I'm not sure yet. Videos that are super-camera specific for one function seldom do well.

Steve , will it affect my Z7 camera when under unavoidable circumstances I put the USB 3.0 jack of Z9 into the USB 3.0 socket of Z7. I see it is charging. Z7 is not provided with charger with USB 3.0 jack during purchase.

That's a great idea! Thanks!

That's a good point - thanks!

Mine is under the same advisory - still in my bag though. :)

@@backcountrygallery I thought about that since the two 24-70 and 800 I tried both locked just fine....but I hadn't taken it out and fallen in love with it yet so decided to just get it over with.

That's why I keep mine off. I don't use the data anyway.

Use a Z8 or Z9 and switch off between shooting as it will pretty much solve your problem. Instant turn-on nirvana.😉😂

LOL, that's how I do it (DSLR or mirrorless).

I don't believe they use any power when flipped, although there could be exceptions to the rule with some brands. Still, I think it's highly unlikely.

@@backcountrygallery Thanks, that’s what I would expect also. BTW, when doing landscape time lapses I’ve noticed that battery life is greatly reduced. Even with the LCD off.

@@MarkNF1 That makes sense. The sensor is still cycling during the shoot and the camera's CPU is running.

Thanks! Modern chargers won't overcharged battery. No worries.

@@backcountrygallery Thanks for the reply Steve!

The reason the D500 was so popular was that it gave you similar performance to the D5 at a third of the price. While you can go into crop mode on the Z8, it's still a pricy camera. If they can pop out a pro-level DX at $2000-$2500, I think they would have an enthusiastic market for it.

That's how most EVFs work. When my eye is away from my Z8, Z9 or a1, the VF shuts off after a moment. And, as noted in the video, most cameras have an option to keep the rear LCD off unless you're using it for menus or photo review.

Those times where done using the procedure in the slide that preceded the time results slide. There's no way to see it anywhere, I timed it.

I mention that in the video - great minds think alike :)

That's because the rear LCD takes a lot of energy and it's constantly running to view the menu

@@callline7183 Most of the drain at the event is when I am holding focus waiting for the golfer to swing. As I get use to the camera and familiar with the settings, I will use the LCD less.

I'm not sure. I know over time a battery will go dead in a camera, but 3 days seems fast. I've not experienced that. About the only thing that comes to mind is putting into into Airplane Mode, but if the camera is switched off, that shouldn't matter. You may want to contact Nikon about it, that's not normal.

@@backcountrygallery thank you Steve, I really appreciate you responding.

Too much of a hassle for the kind of photography I do. It's just not that big of a deal to carry an extra battery and pop it in. The only way I'd use a power bank is if I was filming something and had to film for longer than my battery would last and there was no way to interrupt the sequence. Just not something I've ever run into.

@@backcountrygallery Thanks, Steve

For sure - tough to change the batteries!

The EVF on most cameras shuts off when you take your eye away. So, set as recommended in the video, you won't have any screen actively on once you take your eye from the viewfinder.

@@backcountrygallery thank you Steve. Regards from Colombia.

Keep in mind that even in standby mode the camera is using power. Not much, but it's still a drain vs shutting it off.

@@backcountrygallery I am glad this topic came up.. I had thought that in SLEEP the lens is in sleep too… and I have noticed my 500 PF getting warm in the middle possibly from the VR stayed awake … and I do believe it is affecting my sharpness. So I did a test… shoot… shut off… shoot. This is only a test of the warm spot and sharpness… without and viable way to check battery life aside from a Wild Guess that it lasted longer.. So, the lens.. I think I have an issue with the 500 PF because shutting off keeps it cooler and sharpness isn’t effected ( THIS IS ONLY MY EXPERIENCE Y’ALL ) Anyway Steve… Thanks for the comprehensive information

You win!!

Second!?! Hey Steve!

I know it's an 8-month-old comment. However, I've noticed the same recently when my Z8 was in a drawer for several days with all connections (Bluetooth, wireless, network, etc.) turned off and airplane mode on. I had a fully charged battery in the body, and it lost 5-10% charge over 5-6 days.