| Moderated by: chrisbet, | Page: 1 2 3   |
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| Testing the D850 - Page 1 | |
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| Posted: Sun Sep 21st, 2025 21:01 |
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1st Post |
chrisbet
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Sun came out today so tried the 850 with the 28-70 2.8 and the 80-400 4.5-5.6 NIKON D850 f/8.0 : Speed 1/250 : ISO 64 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED Cropped -  NIKON D850 f/8.0 : Speed 1/250 : ISO 64 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED This dot appears on all images from both lenses - dust on sensor?  NIKON D850 f/8.0 : Speed 1/250 : ISO 64 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED
____________________ If it is broken it was probably me .... |
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| Posted: Sun Sep 21st, 2025 21:03 |
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2nd Post |
chrisbet
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long shot of the jag up the driveway  NIKON D850 f/5.6 : Speed 1/60 : ISO 64 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED and a small plane overhead  NIKON D850 f/10.0 : Speed 1/400 : ISO 64 : Lens AF-S Zoom-Nikkor 28-70mm f/2.8D IF-ED and crop plus post  NIKON D850 f/10.0 : Speed 1/400 : ISO 64 : Lens AF-S Zoom-Nikkor 28-70mm f/2.8D IF-ED
____________________ If it is broken it was probably me .... |
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| Posted: Mon Sep 22nd, 2025 08:09 |
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3rd Post |
jk
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Yes the dot is dust on the sensor. Sensor needs a clean, try the built in shake clean and if that does not work then a wet clean is necessary. https://nikondslr.uk/view_topic.php?id=1576&forum_id=17&jump_to=17695#p17695
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Mon Sep 22nd, 2025 09:53 |
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4th Post |
chrisbet
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I tried the camera sensor clean - no difference so I locked the mirror up and used a blower - the large spot has gone but pixel peeping shows many small specks. Probably too small to affect the images significantly. I am reluctant to use wet cleaning, though I do have some sensor swaps in the cleaning kit. Any recommendations for a camera cleaning service? Fixation? ACS?
____________________ If it is broken it was probably me .... |
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| Posted: Mon Sep 22nd, 2025 10:19 |
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5th Post |
jk
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I have always cleaned my sensors from my D1 right the way through to my Z7 and Z8. Newer cameras are easier than the older one. Your D850 is relatively easy. If you can take a camera apart then you have the skills to do the clean yourself. I have friends who use Fixation but I am sure ACS can do it. Some camera shops offer the service as well.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Mon Sep 22nd, 2025 12:01 |
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6th Post |
chrisbet
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Hmmm - tried twice now using a sensor wipe just lightly moistened with cleaner still got some dust / marks / fibres  NIKON D850 f/16.0 : Speed 1/125 : ISO 200 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED need to pixel peep to see them - thisis a 200% crop - am I being too picky ?   NIKON D850 f/16.0 : Speed 1/125 : ISO 200 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED
____________________ If it is broken it was probably me .... |
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| Posted: Mon Sep 22nd, 2025 12:35 |
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7th Post |
jk
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The fibres can be blown away with a Giotto Rocket blower. Make sure that blower has a filter on way into or out of the blower otherwise you get dust from the inside of the blower (rubber perish particles or dust from air). A really stubborn greasy dust bunny may need a couple of cleans! Patience. Test at f16/22 shooting in sky (blue sky or 100% grey, no cloudy) as this means you see all the dust specks. If you shoot at f5.6-f8 then you wont see them in the images. This applies to real life images as well as shooting to check for dust.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Mon Sep 22nd, 2025 12:38 |
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8th Post |
chrisbet
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Lol - the pics were as per your recommendations - f16 ISO 200 blue sky. The particles are MUCH clearer in camera at max magification.
____________________ If it is broken it was probably me .... |
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| Posted: Mon Sep 22nd, 2025 14:55 |
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9th Post |
Eric
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One of the challenges in sensor cleaning is finding the specks. Remember they are “upside down”…speck towards the base of viewfinder screen are towards the top of the sensor. I use to be quite careful, with a couple of drops of fluid. But as time went on I gave it a good wash…on the basis a dry swap would do more damage. The solvent soon evaporates with lens off. If you can locate the spot leaving the damp swap on the spot for a moment then redoing a clean may work. 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.
____________________ Eric |
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| Posted: Mon Sep 22nd, 2025 15:03 |
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10th Post |
Eric
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chrisbet wrote: I don’t think you are being picky. I can locate it on the full image you posted. It would niggle me (even though you wouldn’t see it at f5.6) as I knew it was still there waiting to get its mates round. 
____________________ Eric |
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