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05-18-2019 04:25 PM
Hi all,
When resting my DSLR attached with IS lens in the backpack / toploader for hiking, should I need to turn OFF lens IS or keep it ON ?
Thank you for your response.
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05-18-2019 08:52 PM
@tmc784 wrote:Hi all,
When resting my DSLR attached with IS lens in the backpack / toploader for hiking, should I need to turn OFF lens IS or keep it ON ?
Thank you for your response.
I typicallly turn off power when I store my camera in a bag. But, your camera should go to sleep when you place it in a bag, and so does the IS.
"Enjoying photography since 1972."
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05-19-2019 10:18 AM
I almost never turn camera or IS off. The one time I do turn the camera off is when I remove or insert the battery or CF card.
I almost never to never turn IS off on a lens.
EOS 1D, EOS 1D MK IIn, EOS 1D MK III, EOS 1Ds MK III, EOS 1D MK IV and EOS 1DX and many lenses.
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05-18-2019 08:52 PM
@tmc784 wrote:Hi all,
When resting my DSLR attached with IS lens in the backpack / toploader for hiking, should I need to turn OFF lens IS or keep it ON ?
Thank you for your response.
I typicallly turn off power when I store my camera in a bag. But, your camera should go to sleep when you place it in a bag, and so does the IS.
"Enjoying photography since 1972."
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05-19-2019 10:18 AM
I almost never turn camera or IS off. The one time I do turn the camera off is when I remove or insert the battery or CF card.
I almost never to never turn IS off on a lens.
EOS 1D, EOS 1D MK IIn, EOS 1D MK III, EOS 1Ds MK III, EOS 1D MK IV and EOS 1DX and many lenses.

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05-19-2019 12:33 PM
Thank you for all your best comments.
Cheers.
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05-20-2019 10:27 AM
Leaving IS on is fine but if your camera is in a backpack, UNLESS it AND every other object are secure I would turn the camera off in case something decides to come to rest against the shutter release. Otherwise you may arrive at your next photo op with a full memory card and a dead battery.
IS does increase power consumption as does Servo AF so keep that in mind when planning battery use on a longer hike. Live view, frequent reviewing of images, and high LCD brightness are other battery killers.
When in "sleep" mode, power consumption is very low and typically I leave my camera on when at an event.
I have hiked a lot with my various Canon SLR and DSLR bodies. This is one case where some sort of filter or other protector on the front of the lens is a very good idea. Some Canon lenses that are otherwise weather sealed need this to be fully weather sealed and I would much rather scratch a relatively inexpensive and easily replaceable filter than the front lens element. I am less worried about doing a quick wipe of the lens if the worst thing I have to worry about is the front filter and hiking definitely exposes the lens to moisture and debris.
Rodger
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05-20-2019 04:28 PM
"IS does increase power consumption as does Servo AF so keep that in mind when planning battery use on a longer hike."
In the 50 some years I have used cameras, daily, I have never run out of battery.
"This is one case where some sort of filter or other protector on the front of the lens is a very good idea."
Absolutely to the point of being mandatory.
EOS 1D, EOS 1D MK IIn, EOS 1D MK III, EOS 1Ds MK III, EOS 1D MK IV and EOS 1DX and many lenses.
