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Testing the D850   -   Page   2
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Posted: Mon Sep 22nd, 2025 15:14
 
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chrisbet



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It?  Lol - I can see at least 7 "niggles" :lol:

I have ordered some full width swabs and specialist cleaner - let's see if that works...



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Posted: Mon Sep 22nd, 2025 15:17
 
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Eric



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chrisbet wrote:

It?  Lol - I can see at least 7 "niggles" :lol:

I have ordered some full width swabs and specialist cleaner - let's see if that works...

Keep counting:lol:





NIKON D850 f/16.0 : Speed 1/125 : ISO 200 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED

The “IT” was the most obvious one…maybe 3. 

I just think you need to be more courageous with the cleaning fluid and do it several times. It’s been much exposed to contamination over recent weeks I guess.

A full size swap would work on a final one sweep clean, but any size swab with fluid should be capable of more local attention.



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Posted: Mon Sep 22nd, 2025 16:47
 
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chrisbet



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Ok, more courage ordered as well ...



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Posted: Mon Sep 22nd, 2025 18:54
 
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jk



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Eric wrote:

You can also get sticky end things to lift visible specks.

My approach was to at first move the mark. If you can do that you have a chance of lifting it off.


If all fails you can take a reference photo against a white wall and use it as a subtraction layer in your editing programme.

I wouldnt use those sticky pad/prods.

I agree with Eric's general approach to the difficult to remove dust spots.  If you use too much fluid you need to wait until it evaporates 20-30mins.



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Posted: Mon Sep 22nd, 2025 19:13
 
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chrisbet



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I have looked carefully with a loupe at the sensor - I can't see any particles to lift with a gummy stick!

If the camera is as well used as the shutter count suggests then I guess it is not surprising the sensor is dirty



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Posted: Mon Sep 22nd, 2025 19:28
 
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Eric



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chrisbet wrote:

Ok, more courage ordered as well ...


 If it comes in a bottle with golden brown liquid…..it will do to clean the sensor as well:lol:



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Posted: Mon Sep 22nd, 2025 19:33
 
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Eric



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jk wrote:

I wouldnt use those sticky pad/prods.

I agree with Eric's general approach to the difficult to remove dust spots.  If you use too much fluid you need to wait until it evaporates 20-30mins.

Never used them. 

I didn’t realise it took that long. Guess its probably a low bp solvent?  
I was never that patient. Lol

i did get a (brief) strange camera malfunction after one cleaning. Took the lens off, put it back on and it had cleared. 

Probably had an inebriated sensor. :lol:



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Posted: Tue Sep 23rd, 2025 13:34
 
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Iain



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I only use the fluid and swabs and never had an issue with them. May take two or three goes when the sensor is badly affected with spots.

 




Posted: Thu Sep 25th, 2025 13:25
 
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chrisbet



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Specialist cleaner and swabs arrived today - took 4 more washes to shift the specks on the D850 - there may be a few tiny ones left around the edges but I am quitting while I am ahead!

Amazingly, the D810 that I did all the work on had very few dust bunnies - one wash got them gone.

I must say I was a bit concerned because these cameras have no low pass filter over the sensor, so you are working directly on the most sensitive part.....



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Posted: Thu Sep 25th, 2025 15:32
 
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jk



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Well done Chris.
Persistence pays.

Remember to switch on the Clean Sensor at Power Down in the menus.



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