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Changing Lenses


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6 replies to this topic

#1
Johnb

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After about 2 years of taking pictures, I have been told that I should turn off the camera before changing lenses. Is this true, and if it is, can you please tell me what damage I have been doing to my lenses and / or cameras ?. 

I use a D7500 and D850. I have not noticed any problems wth the lenses when remounting and using them.  



#2
Nikon Shooter

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There are certainly very sophisticated technologies in both the body
and the lens that are way over my understanding and of many others.

Ignorance is a very fertile ground for myth and stories of all kinds and
I could fall in this one easily IF I gorget that, for 40 + years, I never did.

If there was a possible danger, I think all makers would have it written 
in capital letters with neon flashing colours and circled and arrowed on
all littérature that comes in the manuals.

 



#3
TBonz

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Agree...I certainly have changed lenses with the body turned off and I've done it with the body turned on,  Never noticed an issue either way.  Same is / was true when I had film cameras.



#4
Merco_61

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There were some bodies that had a recommendation to turn the camera off when changing lens, I don't remember what models. It was something about the sensor building up an electrostatic charge, so the mirrorbox attracted dust when the camera was on. I think it was in the CCD era.

That said, I have done it both ways without noticing any difference in the time needed between sensor cleanings.

 

It might be a good habit when using MILCs as the sensor is much less protected with the camera on than in a DSLR or with the camera off.



#5
Johnb

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Thanks for putting my mind at ease guys.

I would have thought that if this was the case, Nikon could easily sort it out with an 'OFF' circuit connected to the lens release button, but thought I had better check. 

Cheers


Another queston guys, re sensor cleaning, so you lock the mirror up and then what, just brush over the face of the sensor ?

And how often would you reccomend that I do this ? I use my cameras atleast once a week. 

Thankyou. 



#6
Nikon Shooter

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"… how often…"

As often as one should to change a light bulb… when needed! :P
 



#7
Merco_61

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You check for dust by closing the aperture down as much as possible and shooting an out of focus photo of either a brightly lit wall or the sky. If there are any dust on the sensor, it will show up clearly.

Start your cleaning by just raising the mirror and opening the shutter by entering the cleaning mode. Blow inside the mirror box with a rocket blower and then check if the dust is gone. Don’t even think of using canned air as the pressure is too high and the propellant can form droplets that can damage the sensor.

If the simple air cleaning doesn’t help, you need to decide what electrostatic or wet method you want to use. Get a kit and follow the instructions to clean your sensor.