I must admit, when not in use, I turn the D7K off. I turn it off if I am traveling.
I do turn it off to change cards, on changing lenses, I suspect it is about 50-50, now I think about it. most of my shooting sessions are not long enough to change the battery. So it only gets changed between sessions, I have two batteries and change over one to be charged. Camera would be off.
I used to have D200 's which were battery hogs and used to keep cameras turned off unless shooting.
.. I set out to discover the inventions of God. -John Muir
Sun 11-Sep-11 09:49 AM | edited Sun 11-Sep-11 02:49 PM by km6xz
Now that the question is a little more specific and answerable....yes, everytime the lens is dismounted, card changed or battery is swapped in the grip. It is an instant reflex, that occurs just before reaching for the lens release button. Any electronics is best turned off when making connections. The data lines going to the grip jack and the lens contacts are diode clamped for protection from static but it is tempting fate to rely on that. Stan St Petersburg Russia
It should be turned off if you are using a VR type lens and still have the VR on. There must be a reason for Nikon to include an off/on switch. I always turn mine off when I'm through shooting, changing lens or cards. After all, how much trouble is it to simply turn it off/on? By so doing, certainly some battery power is saved.
Nobody should seek his own good, but the good of others. <><
I only turn mine off if I'm packing it away. Even then I forget to turn it off.
I used to always leave my D40 on as well but I did have problems with it turning off by itself after the unfortunate gatorade incident. The FN button was affected by the spill and would keep the camera on and cause the battery to drain.
My camera bodies are always turned off at the completion of shooting.
My routine is to store the gear - which means removing the lens even if I am just storing it in my pack. Then I change batteries and recharge the one that was in the camera. Both of these steps require the camera to be turned off.
I think it is a good practice to always turn it off when putting it into a case. I had an N80 that I forgot to turn off and when I put it in the case it activated the shutter. When I took it out at the end of the day, it was very hot. I guess I was lucky that it did not burn it out.
Jerry Jaynes Great Smoky Mountains of North Carolina
Not to be really picky but I believe that the state of the power switch makes no difference when removing or replacing the memory cards. There must be some power that is always present on the card interface as it detects the change of the card even with the switch off. The green LED activates when the card is inserted or removed. The LED pattern is different when it is powered on as it reads the card. Of course, I am not suggesting that the card be removed while the LED is active! But if there is power at the card interface at all times (unless the battery were removed) there is no need for you to turn off the camera.
Also consider SD card readers in PC's and laptops, no instructions ever demand that the power be turned off to the computer to swap cards. I'm sure the interface in Nikon cameras is implemented with the necessary components to insure no damage will occur.
I think it would be best to turn it off if when done shooting for the day. The reason is to keep the camera form being accidentally activated and having the focus and exposure systems on and fully draining the battery to a point at which can not be recharged. In the sleep mode the camera draws very little power, but if the focus and exposure circuits are on the drain is significant and can draining the battery in a matter of hours. When the camera is off, the battery drains just like being out of the camera. The media card slots probably may have an axillary on switch.
Many cameras issued after the D200 have a GPS time out sitting. This came about because having a powered GPS connected to the D200 kept the camera's focus and exposure circuits on and the battery drained in less than 2 hours.